diff --git a/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-dbg.mir b/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-dbg.mir
index 4e1f912a9d6f9..85d0c054754d0 100644
--- a/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-dbg.mir
+++ b/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-dbg.mir
@@ -7,7 +7,6 @@
     unreachable, !dbg !11
   }
 
-  ; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
   declare void @llvm.dbg.value(metadata, metadata, metadata) #0
 
   attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
@@ -36,21 +35,21 @@ name:            test_vreg_96_w64
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_96_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec, debug-location !11
-    ; CHECK-NEXT: DBG_VALUE %3.sub0, $noreg, !9, !DIExpression(), debug-location !11
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec, debug-location !DILocation(line: 2, column: 1, scope: !5)
-    ; CHECK-NEXT: DBG_VALUE %3.sub1, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 2, column: 1, scope: !5)
-    ; CHECK-NEXT: S_NOP 0, implicit %3, debug-location !DILocation(line: 3, column: 1, scope: !5)
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec, debug-location !DILocation(line: 4, column: 1, scope: !5)
-    ; CHECK-NEXT: DBG_VALUE %4.sub0, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 4, column: 1, scope: !5)
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec, debug-location !DILocation(line: 5, column: 1, scope: !5)
-    ; CHECK-NEXT: DBG_VALUE %4.sub1, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 5, column: 1, scope: !5)
-    ; CHECK-NEXT: S_NOP 0, implicit %4, debug-location !DILocation(line: 6, column: 1, scope: !5)
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec, debug-location !DILocation(line: 4, column: 1, scope: !5)
-    ; CHECK-NEXT: DBG_VALUE %5, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 4, column: 1, scope: !5)
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec, debug-location !DILocation(line: 5, column: 1, scope: !5)
-    ; CHECK-NEXT: DBG_VALUE %5, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 5, column: 1, scope: !5)
-    ; CHECK-NEXT: S_NOP 0, implicit %5, debug-location !DILocation(line: 6, column: 1, scope: !5)
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec, debug-location !11
+    ; CHECK-NEXT: DBG_VALUE [[V_MOV_B32_e32_]].sub0, $noreg, !9, !DIExpression(), debug-location !11
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec, debug-location !DILocation(line: 2, column: 1, scope: !5)
+    ; CHECK-NEXT: DBG_VALUE [[V_MOV_B32_e32_]].sub1, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 2, column: 1, scope: !5)
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]], debug-location !DILocation(line: 3, column: 1, scope: !5)
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec, debug-location !DILocation(line: 4, column: 1, scope: !5)
+    ; CHECK-NEXT: DBG_VALUE [[V_MOV_B32_e32_1]].sub0, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 4, column: 1, scope: !5)
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec, debug-location !DILocation(line: 5, column: 1, scope: !5)
+    ; CHECK-NEXT: DBG_VALUE [[V_MOV_B32_e32_1]].sub1, $noreg, !9, !DIExpression(), debug-location !DILocation(line: 5, column: 1, scope: !5)
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]], debug-location !DILocation(line: 6, column: 1, scope: !5)
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec, debug-location !DILocation(line: 4, column: 1, scope: !5)
+    ; CHECK-NEXT: DBG_VALUE [[V_MOV_B32_e32_2]], $noreg, !9, !DIExpression(), debug-location !DILocation(line: 4, column: 1, scope: !5)
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec, debug-location !DILocation(line: 5, column: 1, scope: !5)
+    ; CHECK-NEXT: DBG_VALUE [[V_MOV_B32_e32_2]], $noreg, !9, !DIExpression(), debug-location !DILocation(line: 5, column: 1, scope: !5)
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]], debug-location !DILocation(line: 6, column: 1, scope: !5)
     undef %0.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec, debug-location !11
     DBG_VALUE %0.sub0, $noreg, !9, !DIExpression(), debug-location !11
     %0.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec, debug-location !DILocation(line: 2, column: 1, scope: !5)
diff --git a/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-gen.mir b/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-gen.mir
index d51e63f92e691..86434d1f71a5a 100644
--- a/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-gen.mir
+++ b/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses-gen.mir
@@ -6,26 +6,26 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_subregs_composition_vreg_1024
-    ; CHECK: undef %5.sub0:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5.sub0_sub1
-    ; CHECK-NEXT: S_NOP 0, implicit %5.sub1_sub2
-    ; CHECK-NEXT: undef %6.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %6.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %6.sub0_sub1_sub2
-    ; CHECK-NEXT: S_NOP 0, implicit %6.sub1_sub2_sub3
-    ; CHECK-NEXT: undef %7.sub0:vreg_160 = V_MOV_B32_e32 21, implicit $exec
-    ; CHECK-NEXT: %7.sub1:vreg_160 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %7.sub0_sub1_sub2_sub3
-    ; CHECK-NEXT: S_NOP 0, implicit %7.sub1_sub2_sub3_sub4
-    ; CHECK-NEXT: undef %8.sub0:vreg_192 = V_MOV_B32_e32 31, implicit $exec
-    ; CHECK-NEXT: %8.sub1:vreg_192 = V_MOV_B32_e32 32, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %8.sub0_sub1_sub2_sub3_sub4
-    ; CHECK-NEXT: S_NOP 0, implicit %8.sub1_sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: undef %9.sub0:vreg_256 = V_MOV_B32_e32 41, implicit $exec
-    ; CHECK-NEXT: %9.sub2:vreg_256 = V_MOV_B32_e32 43, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %9.sub0_sub1_sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: S_NOP 0, implicit %9.sub2_sub3_sub4_sub5_sub6_sub7
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0_sub1
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub1_sub2
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub0_sub1_sub2
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1_sub2_sub3
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 21, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub0_sub1_sub2_sub3
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub1_sub2_sub3_sub4
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_3:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 31, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_3:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 32, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_3]].sub0_sub1_sub2_sub3_sub4
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_3]].sub1_sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_4:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 41, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_4:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 43, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_4]].sub0_sub1_sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_4]].sub2_sub3_sub4_sub5_sub6_sub7
     undef %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
     S_NOP 0, implicit %0.sub1_sub2
@@ -97,12 +97,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_96_w64
-    ; CHECK: undef %2.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_96 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_96 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -140,15 +140,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_128_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_128 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_128 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -168,14 +168,14 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_128_w96
-    ; CHECK: undef %2.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_128 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_128 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_128 = V_MOV_B32_e32 02, implicit $exec
@@ -215,15 +215,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_160_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_160 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_160 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -243,18 +243,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_160_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_160 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_160 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_160 = V_MOV_B32_e32 02, implicit $exec
@@ -277,16 +277,16 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_160_w128
-    ; CHECK: undef %2.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_160 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_160 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_160 = V_MOV_B32_e32 02, implicit $exec
@@ -328,15 +328,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_192 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_192 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -356,18 +356,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_192 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_192 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_192 = V_MOV_B32_e32 02, implicit $exec
@@ -390,21 +390,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_192 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_192 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_192 = V_MOV_B32_e32 02, implicit $exec
@@ -430,18 +430,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_w160
-    ; CHECK: undef %2.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %2.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_192 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_192 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_192 = V_MOV_B32_e32 02, implicit $exec
@@ -485,15 +485,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_224 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -513,18 +513,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_224 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_224 = V_MOV_B32_e32 02, implicit $exec
@@ -547,21 +547,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_224 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_224 = V_MOV_B32_e32 02, implicit $exec
@@ -587,24 +587,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_224 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_224 = V_MOV_B32_e32 02, implicit $exec
@@ -633,20 +633,20 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_w192
-    ; CHECK: undef %2.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %2.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %2.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_224 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_224 = V_MOV_B32_e32 02, implicit $exec
@@ -692,15 +692,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -720,18 +720,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_256 = V_MOV_B32_e32 02, implicit $exec
@@ -754,21 +754,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_256 = V_MOV_B32_e32 02, implicit $exec
@@ -794,24 +794,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_256 = V_MOV_B32_e32 02, implicit $exec
@@ -840,27 +840,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_256 = V_MOV_B32_e32 02, implicit $exec
@@ -914,15 +914,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -942,18 +942,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288 = V_MOV_B32_e32 02, implicit $exec
@@ -976,21 +976,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288 = V_MOV_B32_e32 02, implicit $exec
@@ -1016,24 +1016,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288 = V_MOV_B32_e32 02, implicit $exec
@@ -1062,27 +1062,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288 = V_MOV_B32_e32 02, implicit $exec
@@ -1114,24 +1114,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_w256
-    ; CHECK: undef %2.sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %2.sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %2.sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %2.sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %2.sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_288 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288 = V_MOV_B32_e32 02, implicit $exec
@@ -1181,15 +1181,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -1209,18 +1209,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320 = V_MOV_B32_e32 02, implicit $exec
@@ -1243,21 +1243,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320 = V_MOV_B32_e32 02, implicit $exec
@@ -1283,24 +1283,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320 = V_MOV_B32_e32 02, implicit $exec
@@ -1329,27 +1329,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320 = V_MOV_B32_e32 02, implicit $exec
@@ -1381,33 +1381,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_w256
-    ; CHECK: undef %3.sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320 = V_MOV_B32_e32 02, implicit $exec
@@ -1467,15 +1467,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -1495,18 +1495,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352 = V_MOV_B32_e32 02, implicit $exec
@@ -1529,21 +1529,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352 = V_MOV_B32_e32 02, implicit $exec
@@ -1569,24 +1569,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352 = V_MOV_B32_e32 02, implicit $exec
@@ -1615,27 +1615,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352 = V_MOV_B32_e32 02, implicit $exec
@@ -1667,33 +1667,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_w256
-    ; CHECK: undef %3.sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352 = V_MOV_B32_e32 02, implicit $exec
@@ -1753,15 +1753,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -1781,18 +1781,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384 = V_MOV_B32_e32 02, implicit $exec
@@ -1815,21 +1815,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384 = V_MOV_B32_e32 02, implicit $exec
@@ -1855,24 +1855,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384 = V_MOV_B32_e32 02, implicit $exec
@@ -1901,27 +1901,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384 = V_MOV_B32_e32 02, implicit $exec
@@ -1953,33 +1953,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_w256
-    ; CHECK: undef %3.sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384 = V_MOV_B32_e32 02, implicit $exec
@@ -2039,15 +2039,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -2067,18 +2067,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512 = V_MOV_B32_e32 02, implicit $exec
@@ -2101,21 +2101,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 212, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 212, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512 = V_MOV_B32_e32 02, implicit $exec
@@ -2141,24 +2141,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 212, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 212, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512 = V_MOV_B32_e32 02, implicit $exec
@@ -2187,27 +2187,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 212, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 212, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512 = V_MOV_B32_e32 02, implicit $exec
@@ -2239,33 +2239,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_w256
-    ; CHECK: undef %3.sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256 = V_MOV_B32_e32 212, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 212, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512 = V_MOV_B32_e32 02, implicit $exec
@@ -2325,15 +2325,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w64
-    ; CHECK: undef %3.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -2353,18 +2353,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w96
-    ; CHECK: undef %3.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
@@ -2387,21 +2387,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w128
-    ; CHECK: undef %3.sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
@@ -2427,24 +2427,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w160
-    ; CHECK: undef %3.sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160 = V_MOV_B32_e32 227, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 227, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
@@ -2473,27 +2473,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w192
-    ; CHECK: undef %3.sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192 = V_MOV_B32_e32 226, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192 = V_MOV_B32_e32 227, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 226, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 227, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
@@ -2525,33 +2525,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w256
-    ; CHECK: undef %3.sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256 = V_MOV_B32_e32 224, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256 = V_MOV_B32_e32 225, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256 = V_MOV_B32_e32 226, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256 = V_MOV_B32_e32 227, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 224, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256 = V_MOV_B32_e32 225, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 226, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256 = V_MOV_B32_e32 227, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
@@ -2589,57 +2589,57 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_w512
-    ; CHECK: undef %3.sub0:vreg_512 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_512 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_512 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_512 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_512 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_512 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_512 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_512 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: %3.sub8:vreg_512 = V_MOV_B32_e32 8, implicit $exec
-    ; CHECK-NEXT: %3.sub9:vreg_512 = V_MOV_B32_e32 9, implicit $exec
-    ; CHECK-NEXT: %3.sub10:vreg_512 = V_MOV_B32_e32 10, implicit $exec
-    ; CHECK-NEXT: %3.sub11:vreg_512 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub12:vreg_512 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub13:vreg_512 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub14:vreg_512 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub15:vreg_512 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_512 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_512 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_512 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_512 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_512 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_512 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_512 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_512 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: %4.sub8:vreg_512 = V_MOV_B32_e32 19, implicit $exec
-    ; CHECK-NEXT: %4.sub9:vreg_512 = V_MOV_B32_e32 110, implicit $exec
-    ; CHECK-NEXT: %4.sub10:vreg_512 = V_MOV_B32_e32 111, implicit $exec
-    ; CHECK-NEXT: %4.sub11:vreg_512 = V_MOV_B32_e32 112, implicit $exec
-    ; CHECK-NEXT: %4.sub12:vreg_512 = V_MOV_B32_e32 113, implicit $exec
-    ; CHECK-NEXT: %4.sub13:vreg_512 = V_MOV_B32_e32 114, implicit $exec
-    ; CHECK-NEXT: %4.sub14:vreg_512 = V_MOV_B32_e32 115, implicit $exec
-    ; CHECK-NEXT: %4.sub15:vreg_512 = V_MOV_B32_e32 116, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_512 = V_MOV_B32_e32 216, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_512 = V_MOV_B32_e32 217, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_512 = V_MOV_B32_e32 218, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_512 = V_MOV_B32_e32 219, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_512 = V_MOV_B32_e32 220, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_512 = V_MOV_B32_e32 221, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_512 = V_MOV_B32_e32 222, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_512 = V_MOV_B32_e32 223, implicit $exec
-    ; CHECK-NEXT: %5.sub8:vreg_512 = V_MOV_B32_e32 224, implicit $exec
-    ; CHECK-NEXT: %5.sub9:vreg_512 = V_MOV_B32_e32 225, implicit $exec
-    ; CHECK-NEXT: %5.sub10:vreg_512 = V_MOV_B32_e32 226, implicit $exec
-    ; CHECK-NEXT: %5.sub11:vreg_512 = V_MOV_B32_e32 227, implicit $exec
-    ; CHECK-NEXT: %5.sub12:vreg_512 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub13:vreg_512 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub14:vreg_512 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub15:vreg_512 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_512 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_512 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_512 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_512 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_512 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_512 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_512 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_512 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub8:vreg_512 = V_MOV_B32_e32 8, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub9:vreg_512 = V_MOV_B32_e32 9, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub10:vreg_512 = V_MOV_B32_e32 10, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub11:vreg_512 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub12:vreg_512 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub13:vreg_512 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub14:vreg_512 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub15:vreg_512 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_512 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_512 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_512 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_512 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_512 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_512 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_512 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_512 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub8:vreg_512 = V_MOV_B32_e32 19, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub9:vreg_512 = V_MOV_B32_e32 110, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub10:vreg_512 = V_MOV_B32_e32 111, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub11:vreg_512 = V_MOV_B32_e32 112, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub12:vreg_512 = V_MOV_B32_e32 113, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub13:vreg_512 = V_MOV_B32_e32 114, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub14:vreg_512 = V_MOV_B32_e32 115, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub15:vreg_512 = V_MOV_B32_e32 116, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_512 = V_MOV_B32_e32 216, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_512 = V_MOV_B32_e32 217, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_512 = V_MOV_B32_e32 218, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_512 = V_MOV_B32_e32 219, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_512 = V_MOV_B32_e32 220, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_512 = V_MOV_B32_e32 221, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_512 = V_MOV_B32_e32 222, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_512 = V_MOV_B32_e32 223, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub8:vreg_512 = V_MOV_B32_e32 224, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub9:vreg_512 = V_MOV_B32_e32 225, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub10:vreg_512 = V_MOV_B32_e32 226, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub11:vreg_512 = V_MOV_B32_e32 227, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub12:vreg_512 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub13:vreg_512 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub14:vreg_512 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub15:vreg_512 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
@@ -2701,22 +2701,22 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_subregs_composition_vreg_1024_align2
-    ; CHECK: undef %4.sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4.sub0_sub1_sub2
-    ; CHECK-NEXT: S_NOP 0, implicit %4.sub2_sub3_sub4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5.sub0_sub1_sub2_sub3
-    ; CHECK-NEXT: S_NOP 0, implicit %5.sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: undef %6.sub0:vreg_224_align2 = V_MOV_B32_e32 32, implicit $exec
-    ; CHECK-NEXT: %6.sub2:vreg_224_align2 = V_MOV_B32_e32 34, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %6.sub0_sub1_sub2_sub3_sub4
-    ; CHECK-NEXT: S_NOP 0, implicit %6.sub2_sub3_sub4_sub5_sub6
-    ; CHECK-NEXT: undef %7.sub0:vreg_256_align2 = V_MOV_B32_e32 42, implicit $exec
-    ; CHECK-NEXT: %7.sub2:vreg_256_align2 = V_MOV_B32_e32 44, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %7.sub0_sub1_sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: S_NOP 0, implicit %7.sub2_sub3_sub4_sub5_sub6_sub7
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0_sub1_sub2
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub2_sub3_sub4
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub0_sub1_sub2_sub3
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_224_align2 = V_MOV_B32_e32 32, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_224_align2 = V_MOV_B32_e32 34, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub0_sub1_sub2_sub3_sub4
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub2_sub3_sub4_sub5_sub6
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_3:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 42, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_3:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 44, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_3]].sub0_sub1_sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_3]].sub2_sub3_sub4_sub5_sub6_sub7
     undef %1.sub2:vreg_1024_align2 = V_MOV_B32_e32 12, implicit $exec
     %1.sub4:vreg_1024_align2 = V_MOV_B32_e32 14, implicit $exec
     S_NOP 0, implicit %1.sub2_sub3_sub4
@@ -2744,10 +2744,10 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_64_align2_w32
-    ; CHECK: undef %0.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_64_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
     undef %0.sub0:vreg_64_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -2761,12 +2761,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_96_align2_w32
-    ; CHECK: undef %0.sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_96_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub2:vreg_96_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub2
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub2
     undef %0.sub0:vreg_96_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -2784,12 +2784,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_128_align2_w32
-    ; CHECK: undef %0.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_128_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub3:vreg_128_align2 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub3
     undef %0.sub0:vreg_128_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -2806,12 +2806,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_128_align2_w64
-    ; CHECK: undef %2.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_128_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_128_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -2828,12 +2828,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_160_align2_w32
-    ; CHECK: undef %0.sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_160_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub4:vreg_160_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub4
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub4
     undef %0.sub0:vreg_160_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -2851,14 +2851,14 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_160_align2_w96
-    ; CHECK: undef %2.sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_160_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_160_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_160_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -2877,12 +2877,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_align2_w32
-    ; CHECK: undef %0.sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_192_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub5:vreg_192_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub5
     undef %0.sub0:vreg_192_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -2899,15 +2899,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_align2_w64
-    ; CHECK: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_192_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_192_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -2928,16 +2928,16 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_192_align2_w128
-    ; CHECK: undef %2.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_192_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_192_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_192_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -2958,12 +2958,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_align2_w32
-    ; CHECK: undef %0.sub0:vreg_224_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_224_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub6:vreg_224_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub6
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_224_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_224_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_224_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub6
     undef %0.sub0:vreg_224_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -2981,18 +2981,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_align2_w96
-    ; CHECK: undef %3.sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_224_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_224_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3016,18 +3016,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_224_align2_w160
-    ; CHECK: undef %2.sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_160_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_160_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_160_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %2.sub4:vreg_160_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_224_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_224_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_224_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3050,12 +3050,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_align2_w32
-    ; CHECK: undef %0.sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_256_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub7:vreg_256_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub7
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub7
     undef %0.sub0:vreg_256_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -3072,15 +3072,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_align2_w64
-    ; CHECK: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -3101,21 +3101,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_align2_w128
-    ; CHECK: undef %3.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_256_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_256_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3142,20 +3142,20 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_256_align2_w192
-    ; CHECK: undef %2.sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %2.sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %2.sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_256_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_256_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_256_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3179,12 +3179,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_align2_w32
-    ; CHECK: undef %0.sub0:vreg_288_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_288_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub8:vreg_288_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub8
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_288_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_288_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub8:vreg_288_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub8
     undef %0.sub0:vreg_288_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -3202,18 +3202,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_align2_w96
-    ; CHECK: undef %3.sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3237,24 +3237,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_288_align2_w160
-    ; CHECK: undef %3.sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_288_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_288_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_288_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3285,12 +3285,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_align2_w32
-    ; CHECK: undef %0.sub0:vreg_320_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_320_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub9:vreg_320_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub9
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_320_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_320_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub9:vreg_320_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub9
     undef %0.sub0:vreg_320_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -3307,15 +3307,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_align2_w64
-    ; CHECK: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -3336,21 +3336,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_align2_w128
-    ; CHECK: undef %3.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3377,27 +3377,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_align2_w192
-    ; CHECK: undef %3.sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_320_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3429,24 +3429,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_320_align2_w256
-    ; CHECK: undef %2.sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %2.sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %2.sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %2.sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %2.sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %2.sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %2.sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %2.sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
     undef %0.sub0:vreg_320_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_320_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_320_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3474,12 +3474,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_align2_w32
-    ; CHECK: undef %0.sub0:vreg_352_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_352_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub10:vreg_352_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub10
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_352_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_352_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub10:vreg_352_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub10
     undef %0.sub0:vreg_352_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -3497,18 +3497,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_align2_w96
-    ; CHECK: undef %3.sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_96_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_96_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_96_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_96_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_96_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3532,24 +3532,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_352_align2_w160
-    ; CHECK: undef %3.sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_160_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_160_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_160_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_160_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_160_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_160_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_160_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_160_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_160_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_160_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_160_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_160_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_160_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_160_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_160_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_352_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_352_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_352_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3580,12 +3580,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_align2_w32
-    ; CHECK: undef %0.sub0:vreg_384_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_384_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub11:vreg_384_align2 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub11
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_384_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_384_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub11:vreg_384_align2 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub11
     undef %0.sub0:vreg_384_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -3602,15 +3602,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_align2_w64
-    ; CHECK: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64_align2 = V_MOV_B32_e32 110, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64_align2 = V_MOV_B32_e32 111, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64_align2 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 110, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 111, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -3631,21 +3631,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_align2_w128
-    ; CHECK: undef %3.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128_align2 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3672,27 +3672,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_align2_w192
-    ; CHECK: undef %3.sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192_align2 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3724,33 +3724,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_384_align2_w256
-    ; CHECK: undef %3.sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256_align2 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_384_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_384_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_384_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3788,12 +3788,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_align2_w32
-    ; CHECK: undef %0.sub0:vreg_512_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_512_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub15:vreg_512_align2 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub15
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_512_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_512_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub15:vreg_512_align2 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub15
     undef %0.sub0:vreg_512_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -3810,15 +3810,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_align2_w64
-    ; CHECK: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64_align2 = V_MOV_B32_e32 114, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64_align2 = V_MOV_B32_e32 115, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64_align2 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 114, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 115, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -3839,21 +3839,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_align2_w128
-    ; CHECK: undef %3.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128_align2 = V_MOV_B32_e32 112, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128_align2 = V_MOV_B32_e32 113, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128_align2 = V_MOV_B32_e32 114, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128_align2 = V_MOV_B32_e32 115, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128_align2 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 112, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 113, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 114, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 115, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3880,27 +3880,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_align2_w192
-    ; CHECK: undef %3.sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192_align2 = V_MOV_B32_e32 110, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192_align2 = V_MOV_B32_e32 111, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192_align2 = V_MOV_B32_e32 112, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192_align2 = V_MOV_B32_e32 113, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192_align2 = V_MOV_B32_e32 114, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192_align2 = V_MOV_B32_e32 115, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192_align2 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 110, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 111, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 112, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 113, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 114, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 115, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3932,33 +3932,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_512_align2_w256
-    ; CHECK: undef %3.sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256_align2 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256_align2 = V_MOV_B32_e32 212, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256_align2 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256_align2 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256_align2 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 212, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_512_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_512_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_512_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -3996,12 +3996,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_align2_w32
-    ; CHECK: undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %0.sub0
-    ; CHECK-NEXT: undef %1.sub1:vreg_1024_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %1.sub1
-    ; CHECK-NEXT: undef %2.sub31:vreg_1024_align2 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub31
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_1024_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_1024_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub31:vreg_1024_align2 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub31
     undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 00, implicit $exec
     S_NOP 0, implicit %0.sub0
 
@@ -4018,15 +4018,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_align2_w64
-    ; CHECK: undef %3.sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_64_align2 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_64_align2 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_64_align2 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_64_align2 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024_align2 = V_MOV_B32_e32 01, implicit $exec
     S_NOP 0, implicit %0.sub0_sub1
@@ -4047,21 +4047,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_align2_w128
-    ; CHECK: undef %3.sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_128_align2 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_128_align2 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_128_align2 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_128_align2 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_128_align2 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_128_align2 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_128_align2 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_128_align2 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -4088,27 +4088,27 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_align2_w192
-    ; CHECK: undef %3.sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_192_align2 = V_MOV_B32_e32 226, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_192_align2 = V_MOV_B32_e32 227, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_192_align2 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_192_align2 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_192_align2 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_192_align2 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_192_align2 = V_MOV_B32_e32 226, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_192_align2 = V_MOV_B32_e32 227, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_192_align2 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_192_align2 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_192_align2 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_192_align2 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -4140,33 +4140,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_align2_w256
-    ; CHECK: undef %3.sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_256_align2 = V_MOV_B32_e32 224, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_256_align2 = V_MOV_B32_e32 225, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_256_align2 = V_MOV_B32_e32 226, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_256_align2 = V_MOV_B32_e32 227, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_256_align2 = V_MOV_B32_e32 228, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_256_align2 = V_MOV_B32_e32 229, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_256_align2 = V_MOV_B32_e32 230, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_256_align2 = V_MOV_B32_e32 231, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 16, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 17, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 18, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 19, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_256_align2 = V_MOV_B32_e32 224, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_256_align2 = V_MOV_B32_e32 225, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_256_align2 = V_MOV_B32_e32 226, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_256_align2 = V_MOV_B32_e32 227, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_256_align2 = V_MOV_B32_e32 228, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_256_align2 = V_MOV_B32_e32 229, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_256_align2 = V_MOV_B32_e32 230, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_256_align2 = V_MOV_B32_e32 231, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -4204,57 +4204,57 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_vreg_1024_align2_w512
-    ; CHECK: undef %3.sub0:vreg_512_align2 = V_MOV_B32_e32 0, implicit $exec
-    ; CHECK-NEXT: %3.sub1:vreg_512_align2 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %3.sub2:vreg_512_align2 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: %3.sub3:vreg_512_align2 = V_MOV_B32_e32 3, implicit $exec
-    ; CHECK-NEXT: %3.sub4:vreg_512_align2 = V_MOV_B32_e32 4, implicit $exec
-    ; CHECK-NEXT: %3.sub5:vreg_512_align2 = V_MOV_B32_e32 5, implicit $exec
-    ; CHECK-NEXT: %3.sub6:vreg_512_align2 = V_MOV_B32_e32 6, implicit $exec
-    ; CHECK-NEXT: %3.sub7:vreg_512_align2 = V_MOV_B32_e32 7, implicit $exec
-    ; CHECK-NEXT: %3.sub8:vreg_512_align2 = V_MOV_B32_e32 8, implicit $exec
-    ; CHECK-NEXT: %3.sub9:vreg_512_align2 = V_MOV_B32_e32 9, implicit $exec
-    ; CHECK-NEXT: %3.sub10:vreg_512_align2 = V_MOV_B32_e32 10, implicit $exec
-    ; CHECK-NEXT: %3.sub11:vreg_512_align2 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %3.sub12:vreg_512_align2 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: %3.sub13:vreg_512_align2 = V_MOV_B32_e32 13, implicit $exec
-    ; CHECK-NEXT: %3.sub14:vreg_512_align2 = V_MOV_B32_e32 14, implicit $exec
-    ; CHECK-NEXT: %3.sub15:vreg_512_align2 = V_MOV_B32_e32 15, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:vreg_512_align2 = V_MOV_B32_e32 116, implicit $exec
-    ; CHECK-NEXT: %4.sub1:vreg_512_align2 = V_MOV_B32_e32 117, implicit $exec
-    ; CHECK-NEXT: %4.sub2:vreg_512_align2 = V_MOV_B32_e32 118, implicit $exec
-    ; CHECK-NEXT: %4.sub3:vreg_512_align2 = V_MOV_B32_e32 119, implicit $exec
-    ; CHECK-NEXT: %4.sub4:vreg_512_align2 = V_MOV_B32_e32 120, implicit $exec
-    ; CHECK-NEXT: %4.sub5:vreg_512_align2 = V_MOV_B32_e32 121, implicit $exec
-    ; CHECK-NEXT: %4.sub6:vreg_512_align2 = V_MOV_B32_e32 122, implicit $exec
-    ; CHECK-NEXT: %4.sub7:vreg_512_align2 = V_MOV_B32_e32 123, implicit $exec
-    ; CHECK-NEXT: %4.sub8:vreg_512_align2 = V_MOV_B32_e32 124, implicit $exec
-    ; CHECK-NEXT: %4.sub9:vreg_512_align2 = V_MOV_B32_e32 125, implicit $exec
-    ; CHECK-NEXT: %4.sub10:vreg_512_align2 = V_MOV_B32_e32 126, implicit $exec
-    ; CHECK-NEXT: %4.sub11:vreg_512_align2 = V_MOV_B32_e32 127, implicit $exec
-    ; CHECK-NEXT: %4.sub12:vreg_512_align2 = V_MOV_B32_e32 128, implicit $exec
-    ; CHECK-NEXT: %4.sub13:vreg_512_align2 = V_MOV_B32_e32 129, implicit $exec
-    ; CHECK-NEXT: %4.sub14:vreg_512_align2 = V_MOV_B32_e32 130, implicit $exec
-    ; CHECK-NEXT: %4.sub15:vreg_512_align2 = V_MOV_B32_e32 131, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:vreg_512_align2 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_512_align2 = V_MOV_B32_e32 23, implicit $exec
-    ; CHECK-NEXT: %5.sub2:vreg_512_align2 = V_MOV_B32_e32 24, implicit $exec
-    ; CHECK-NEXT: %5.sub3:vreg_512_align2 = V_MOV_B32_e32 25, implicit $exec
-    ; CHECK-NEXT: %5.sub4:vreg_512_align2 = V_MOV_B32_e32 26, implicit $exec
-    ; CHECK-NEXT: %5.sub5:vreg_512_align2 = V_MOV_B32_e32 27, implicit $exec
-    ; CHECK-NEXT: %5.sub6:vreg_512_align2 = V_MOV_B32_e32 28, implicit $exec
-    ; CHECK-NEXT: %5.sub7:vreg_512_align2 = V_MOV_B32_e32 29, implicit $exec
-    ; CHECK-NEXT: %5.sub8:vreg_512_align2 = V_MOV_B32_e32 210, implicit $exec
-    ; CHECK-NEXT: %5.sub9:vreg_512_align2 = V_MOV_B32_e32 211, implicit $exec
-    ; CHECK-NEXT: %5.sub10:vreg_512_align2 = V_MOV_B32_e32 212, implicit $exec
-    ; CHECK-NEXT: %5.sub11:vreg_512_align2 = V_MOV_B32_e32 213, implicit $exec
-    ; CHECK-NEXT: %5.sub12:vreg_512_align2 = V_MOV_B32_e32 214, implicit $exec
-    ; CHECK-NEXT: %5.sub13:vreg_512_align2 = V_MOV_B32_e32 215, implicit $exec
-    ; CHECK-NEXT: %5.sub14:vreg_512_align2 = V_MOV_B32_e32 216, implicit $exec
-    ; CHECK-NEXT: %5.sub15:vreg_512_align2 = V_MOV_B32_e32 217, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_512_align2 = V_MOV_B32_e32 0, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_512_align2 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub2:vreg_512_align2 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_512_align2 = V_MOV_B32_e32 3, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub4:vreg_512_align2 = V_MOV_B32_e32 4, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub5:vreg_512_align2 = V_MOV_B32_e32 5, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub6:vreg_512_align2 = V_MOV_B32_e32 6, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub7:vreg_512_align2 = V_MOV_B32_e32 7, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub8:vreg_512_align2 = V_MOV_B32_e32 8, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub9:vreg_512_align2 = V_MOV_B32_e32 9, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub10:vreg_512_align2 = V_MOV_B32_e32 10, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub11:vreg_512_align2 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub12:vreg_512_align2 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub13:vreg_512_align2 = V_MOV_B32_e32 13, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub14:vreg_512_align2 = V_MOV_B32_e32 14, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub15:vreg_512_align2 = V_MOV_B32_e32 15, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_512_align2 = V_MOV_B32_e32 116, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_512_align2 = V_MOV_B32_e32 117, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub2:vreg_512_align2 = V_MOV_B32_e32 118, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub3:vreg_512_align2 = V_MOV_B32_e32 119, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub4:vreg_512_align2 = V_MOV_B32_e32 120, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub5:vreg_512_align2 = V_MOV_B32_e32 121, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub6:vreg_512_align2 = V_MOV_B32_e32 122, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub7:vreg_512_align2 = V_MOV_B32_e32 123, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub8:vreg_512_align2 = V_MOV_B32_e32 124, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub9:vreg_512_align2 = V_MOV_B32_e32 125, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub10:vreg_512_align2 = V_MOV_B32_e32 126, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub11:vreg_512_align2 = V_MOV_B32_e32 127, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub12:vreg_512_align2 = V_MOV_B32_e32 128, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub13:vreg_512_align2 = V_MOV_B32_e32 129, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub14:vreg_512_align2 = V_MOV_B32_e32 130, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub15:vreg_512_align2 = V_MOV_B32_e32 131, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]]
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_512_align2 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_512_align2 = V_MOV_B32_e32 23, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub2:vreg_512_align2 = V_MOV_B32_e32 24, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub3:vreg_512_align2 = V_MOV_B32_e32 25, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub4:vreg_512_align2 = V_MOV_B32_e32 26, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub5:vreg_512_align2 = V_MOV_B32_e32 27, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub6:vreg_512_align2 = V_MOV_B32_e32 28, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub7:vreg_512_align2 = V_MOV_B32_e32 29, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub8:vreg_512_align2 = V_MOV_B32_e32 210, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub9:vreg_512_align2 = V_MOV_B32_e32 211, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub10:vreg_512_align2 = V_MOV_B32_e32 212, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub11:vreg_512_align2 = V_MOV_B32_e32 213, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub12:vreg_512_align2 = V_MOV_B32_e32 214, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub13:vreg_512_align2 = V_MOV_B32_e32 215, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub14:vreg_512_align2 = V_MOV_B32_e32 216, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub15:vreg_512_align2 = V_MOV_B32_e32 217, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]]
     undef %0.sub0:vreg_1024_align2 = V_MOV_B32_e32 00, implicit $exec
     %0.sub1:vreg_1024_align2 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024_align2 = V_MOV_B32_e32 02, implicit $exec
@@ -4316,14 +4316,14 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_subregs_composition_sgpr_1024
-    ; CHECK: undef %2.sub0:sgpr_288 = S_MOV_B32 34
-    ; CHECK-NEXT: %2.sub4:sgpr_288 = S_MOV_B32 38
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub0_sub1_sub2_sub3_sub4
-    ; CHECK-NEXT: S_NOP 0, implicit %2.sub4_sub5_sub6_sub7_sub8
-    ; CHECK-NEXT: undef %3.sub0:sgpr_320 = S_MOV_B32 44
-    ; CHECK-NEXT: %3.sub4:sgpr_320 = S_MOV_B32 48
-    ; CHECK-NEXT: S_NOP 0, implicit %3.sub0_sub1_sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: S_NOP 0, implicit %3.sub4_sub5_sub6_sub7_sub8_sub9
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_288 = S_MOV_B32 34
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_288 = S_MOV_B32 38
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]].sub0_sub1_sub2_sub3_sub4
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]].sub4_sub5_sub6_sub7_sub8
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_320 = S_MOV_B32 44
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_320 = S_MOV_B32 48
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]].sub0_sub1_sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]].sub4_sub5_sub6_sub7_sub8_sub9
     undef %3.sub4:sgpr_1024 = S_MOV_B32 34
     %3.sub8:sgpr_1024 = S_MOV_B32 38
     S_NOP 0, implicit %3.sub4_sub5_sub6_sub7_sub8
@@ -4403,12 +4403,12 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_128_w64
-    ; CHECK: undef %2.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %2.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:sgpr_64 = S_MOV_B32 12
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 13
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 12
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 13
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
     undef %0.sub0:sgpr_128 = S_MOV_B32 00
     %0.sub1:sgpr_128 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -4472,15 +4472,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_192_w64
-    ; CHECK: undef %3.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_64 = S_MOV_B32 12
-    ; CHECK-NEXT: %4.sub1:sgpr_64 = S_MOV_B32 13
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_64 = S_MOV_B32 24
-    ; CHECK-NEXT: %5.sub1:sgpr_64 = S_MOV_B32 25
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 12
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 13
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 24
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 25
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_192 = S_MOV_B32 00
     %0.sub1:sgpr_192 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -4552,15 +4552,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_256_w64
-    ; CHECK: undef %3.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_64 = S_MOV_B32 12
-    ; CHECK-NEXT: %4.sub1:sgpr_64 = S_MOV_B32 13
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_64 = S_MOV_B32 26
-    ; CHECK-NEXT: %5.sub1:sgpr_64 = S_MOV_B32 27
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 12
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 13
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 26
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 27
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_256 = S_MOV_B32 00
     %0.sub1:sgpr_256 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -4581,16 +4581,16 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_256_w128
-    ; CHECK: undef %2.sub0:sgpr_128 = S_MOV_B32 0
-    ; CHECK-NEXT: %2.sub1:sgpr_128 = S_MOV_B32 1
-    ; CHECK-NEXT: %2.sub2:sgpr_128 = S_MOV_B32 2
-    ; CHECK-NEXT: %2.sub3:sgpr_128 = S_MOV_B32 3
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:sgpr_128 = S_MOV_B32 14
-    ; CHECK-NEXT: %3.sub1:sgpr_128 = S_MOV_B32 15
-    ; CHECK-NEXT: %3.sub2:sgpr_128 = S_MOV_B32 16
-    ; CHECK-NEXT: %3.sub3:sgpr_128 = S_MOV_B32 17
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 3
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 15
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 16
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 17
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
     undef %0.sub0:sgpr_256 = S_MOV_B32 00
     %0.sub1:sgpr_256 = S_MOV_B32 01
     %0.sub2:sgpr_256 = S_MOV_B32 02
@@ -4637,18 +4637,18 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_288_w160
-    ; CHECK: undef %2.sub0:sgpr_160 = S_MOV_B32 0
-    ; CHECK-NEXT: %2.sub1:sgpr_160 = S_MOV_B32 1
-    ; CHECK-NEXT: %2.sub2:sgpr_160 = S_MOV_B32 2
-    ; CHECK-NEXT: %2.sub3:sgpr_160 = S_MOV_B32 3
-    ; CHECK-NEXT: %2.sub4:sgpr_160 = S_MOV_B32 4
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:sgpr_160 = S_MOV_B32 14
-    ; CHECK-NEXT: %3.sub1:sgpr_160 = S_MOV_B32 15
-    ; CHECK-NEXT: %3.sub2:sgpr_160 = S_MOV_B32 16
-    ; CHECK-NEXT: %3.sub3:sgpr_160 = S_MOV_B32 17
-    ; CHECK-NEXT: %3.sub4:sgpr_160 = S_MOV_B32 18
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_160 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_160 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_160 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_160 = S_MOV_B32 3
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_160 = S_MOV_B32 4
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_160 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_160 = S_MOV_B32 15
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_160 = S_MOV_B32 16
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_160 = S_MOV_B32 17
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_160 = S_MOV_B32 18
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
     undef %0.sub0:sgpr_288 = S_MOV_B32 00
     %0.sub1:sgpr_288 = S_MOV_B32 01
     %0.sub2:sgpr_288 = S_MOV_B32 02
@@ -4694,15 +4694,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_320_w64
-    ; CHECK: undef %3.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_64 = S_MOV_B32 12
-    ; CHECK-NEXT: %4.sub1:sgpr_64 = S_MOV_B32 13
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_64 = S_MOV_B32 28
-    ; CHECK-NEXT: %5.sub1:sgpr_64 = S_MOV_B32 29
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 12
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 13
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 28
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 29
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_320 = S_MOV_B32 00
     %0.sub1:sgpr_320 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -4725,20 +4725,20 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_320_w192
-    ; CHECK: undef %2.sub0:sgpr_192 = S_MOV_B32 0
-    ; CHECK-NEXT: %2.sub1:sgpr_192 = S_MOV_B32 1
-    ; CHECK-NEXT: %2.sub2:sgpr_192 = S_MOV_B32 2
-    ; CHECK-NEXT: %2.sub3:sgpr_192 = S_MOV_B32 3
-    ; CHECK-NEXT: %2.sub4:sgpr_192 = S_MOV_B32 4
-    ; CHECK-NEXT: %2.sub5:sgpr_192 = S_MOV_B32 5
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:sgpr_192 = S_MOV_B32 14
-    ; CHECK-NEXT: %3.sub1:sgpr_192 = S_MOV_B32 15
-    ; CHECK-NEXT: %3.sub2:sgpr_192 = S_MOV_B32 16
-    ; CHECK-NEXT: %3.sub3:sgpr_192 = S_MOV_B32 17
-    ; CHECK-NEXT: %3.sub4:sgpr_192 = S_MOV_B32 18
-    ; CHECK-NEXT: %3.sub5:sgpr_192 = S_MOV_B32 19
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_192 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_192 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_192 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_192 = S_MOV_B32 3
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_192 = S_MOV_B32 4
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub5:sgpr_192 = S_MOV_B32 5
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_192 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_192 = S_MOV_B32 15
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_192 = S_MOV_B32 16
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_192 = S_MOV_B32 17
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_192 = S_MOV_B32 18
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub5:sgpr_192 = S_MOV_B32 19
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
     undef %0.sub0:sgpr_320 = S_MOV_B32 00
     %0.sub1:sgpr_320 = S_MOV_B32 01
     %0.sub2:sgpr_320 = S_MOV_B32 02
@@ -4813,15 +4813,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_384_w64
-    ; CHECK: undef %3.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_64 = S_MOV_B32 110
-    ; CHECK-NEXT: %4.sub1:sgpr_64 = S_MOV_B32 111
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_64 = S_MOV_B32 22
-    ; CHECK-NEXT: %5.sub1:sgpr_64 = S_MOV_B32 23
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 110
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 111
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 22
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 23
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_384 = S_MOV_B32 00
     %0.sub1:sgpr_384 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -4842,21 +4842,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_384_w128
-    ; CHECK: undef %3.sub0:sgpr_128 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_128 = S_MOV_B32 1
-    ; CHECK-NEXT: %3.sub2:sgpr_128 = S_MOV_B32 2
-    ; CHECK-NEXT: %3.sub3:sgpr_128 = S_MOV_B32 3
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_128 = S_MOV_B32 14
-    ; CHECK-NEXT: %4.sub1:sgpr_128 = S_MOV_B32 15
-    ; CHECK-NEXT: %4.sub2:sgpr_128 = S_MOV_B32 16
-    ; CHECK-NEXT: %4.sub3:sgpr_128 = S_MOV_B32 17
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_128 = S_MOV_B32 28
-    ; CHECK-NEXT: %5.sub1:sgpr_128 = S_MOV_B32 29
-    ; CHECK-NEXT: %5.sub2:sgpr_128 = S_MOV_B32 210
-    ; CHECK-NEXT: %5.sub3:sgpr_128 = S_MOV_B32 211
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 3
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 15
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 16
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 17
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 28
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 29
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 210
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 211
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_384 = S_MOV_B32 00
     %0.sub1:sgpr_384 = S_MOV_B32 01
     %0.sub2:sgpr_384 = S_MOV_B32 02
@@ -4884,24 +4884,24 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_384_w256
-    ; CHECK: undef %2.sub0:sgpr_256 = S_MOV_B32 0
-    ; CHECK-NEXT: %2.sub1:sgpr_256 = S_MOV_B32 1
-    ; CHECK-NEXT: %2.sub2:sgpr_256 = S_MOV_B32 2
-    ; CHECK-NEXT: %2.sub3:sgpr_256 = S_MOV_B32 3
-    ; CHECK-NEXT: %2.sub4:sgpr_256 = S_MOV_B32 4
-    ; CHECK-NEXT: %2.sub5:sgpr_256 = S_MOV_B32 5
-    ; CHECK-NEXT: %2.sub6:sgpr_256 = S_MOV_B32 6
-    ; CHECK-NEXT: %2.sub7:sgpr_256 = S_MOV_B32 7
-    ; CHECK-NEXT: S_NOP 0, implicit %2
-    ; CHECK-NEXT: undef %3.sub0:sgpr_256 = S_MOV_B32 14
-    ; CHECK-NEXT: %3.sub1:sgpr_256 = S_MOV_B32 15
-    ; CHECK-NEXT: %3.sub2:sgpr_256 = S_MOV_B32 16
-    ; CHECK-NEXT: %3.sub3:sgpr_256 = S_MOV_B32 17
-    ; CHECK-NEXT: %3.sub4:sgpr_256 = S_MOV_B32 18
-    ; CHECK-NEXT: %3.sub5:sgpr_256 = S_MOV_B32 19
-    ; CHECK-NEXT: %3.sub6:sgpr_256 = S_MOV_B32 110
-    ; CHECK-NEXT: %3.sub7:sgpr_256 = S_MOV_B32 111
-    ; CHECK-NEXT: S_NOP 0, implicit %3
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 3
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 4
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 5
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 6
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 7
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 15
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 16
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 17
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 18
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 19
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 110
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 111
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
     undef %0.sub0:sgpr_384 = S_MOV_B32 00
     %0.sub1:sgpr_384 = S_MOV_B32 01
     %0.sub2:sgpr_384 = S_MOV_B32 02
@@ -4951,15 +4951,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_512_w64
-    ; CHECK: undef %3.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_64 = S_MOV_B32 114
-    ; CHECK-NEXT: %4.sub1:sgpr_64 = S_MOV_B32 115
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_64 = S_MOV_B32 22
-    ; CHECK-NEXT: %5.sub1:sgpr_64 = S_MOV_B32 23
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 114
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 115
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 22
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 23
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_512 = S_MOV_B32 00
     %0.sub1:sgpr_512 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -4980,21 +4980,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_512_w128
-    ; CHECK: undef %3.sub0:sgpr_128 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_128 = S_MOV_B32 1
-    ; CHECK-NEXT: %3.sub2:sgpr_128 = S_MOV_B32 2
-    ; CHECK-NEXT: %3.sub3:sgpr_128 = S_MOV_B32 3
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_128 = S_MOV_B32 112
-    ; CHECK-NEXT: %4.sub1:sgpr_128 = S_MOV_B32 113
-    ; CHECK-NEXT: %4.sub2:sgpr_128 = S_MOV_B32 114
-    ; CHECK-NEXT: %4.sub3:sgpr_128 = S_MOV_B32 115
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_128 = S_MOV_B32 24
-    ; CHECK-NEXT: %5.sub1:sgpr_128 = S_MOV_B32 25
-    ; CHECK-NEXT: %5.sub2:sgpr_128 = S_MOV_B32 26
-    ; CHECK-NEXT: %5.sub3:sgpr_128 = S_MOV_B32 27
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 3
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 112
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 113
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 114
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 115
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 24
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 25
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 26
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 27
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_512 = S_MOV_B32 00
     %0.sub1:sgpr_512 = S_MOV_B32 01
     %0.sub2:sgpr_512 = S_MOV_B32 02
@@ -5022,33 +5022,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_512_w256
-    ; CHECK: undef %3.sub0:sgpr_256 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_256 = S_MOV_B32 1
-    ; CHECK-NEXT: %3.sub2:sgpr_256 = S_MOV_B32 2
-    ; CHECK-NEXT: %3.sub3:sgpr_256 = S_MOV_B32 3
-    ; CHECK-NEXT: %3.sub4:sgpr_256 = S_MOV_B32 4
-    ; CHECK-NEXT: %3.sub5:sgpr_256 = S_MOV_B32 5
-    ; CHECK-NEXT: %3.sub6:sgpr_256 = S_MOV_B32 6
-    ; CHECK-NEXT: %3.sub7:sgpr_256 = S_MOV_B32 7
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_256 = S_MOV_B32 14
-    ; CHECK-NEXT: %4.sub1:sgpr_256 = S_MOV_B32 15
-    ; CHECK-NEXT: %4.sub2:sgpr_256 = S_MOV_B32 16
-    ; CHECK-NEXT: %4.sub3:sgpr_256 = S_MOV_B32 17
-    ; CHECK-NEXT: %4.sub4:sgpr_256 = S_MOV_B32 18
-    ; CHECK-NEXT: %4.sub5:sgpr_256 = S_MOV_B32 19
-    ; CHECK-NEXT: %4.sub6:sgpr_256 = S_MOV_B32 110
-    ; CHECK-NEXT: %4.sub7:sgpr_256 = S_MOV_B32 111
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_256 = S_MOV_B32 28
-    ; CHECK-NEXT: %5.sub1:sgpr_256 = S_MOV_B32 29
-    ; CHECK-NEXT: %5.sub2:sgpr_256 = S_MOV_B32 210
-    ; CHECK-NEXT: %5.sub3:sgpr_256 = S_MOV_B32 211
-    ; CHECK-NEXT: %5.sub4:sgpr_256 = S_MOV_B32 212
-    ; CHECK-NEXT: %5.sub5:sgpr_256 = S_MOV_B32 213
-    ; CHECK-NEXT: %5.sub6:sgpr_256 = S_MOV_B32 214
-    ; CHECK-NEXT: %5.sub7:sgpr_256 = S_MOV_B32 215
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 3
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 4
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 5
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 6
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 7
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 15
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 16
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 17
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 18
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 19
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 110
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 111
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 28
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 29
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 210
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 211
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 212
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 213
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 214
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 215
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_512 = S_MOV_B32 00
     %0.sub1:sgpr_512 = S_MOV_B32 01
     %0.sub2:sgpr_512 = S_MOV_B32 02
@@ -5108,15 +5108,15 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_1024_w64
-    ; CHECK: undef %3.sub0:sgpr_64 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_64 = S_MOV_B32 12
-    ; CHECK-NEXT: %4.sub1:sgpr_64 = S_MOV_B32 13
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_64 = S_MOV_B32 230
-    ; CHECK-NEXT: %5.sub1:sgpr_64 = S_MOV_B32 231
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 12
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 13
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 230
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 231
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_1024 = S_MOV_B32 00
     %0.sub1:sgpr_1024 = S_MOV_B32 01
     S_NOP 0, implicit %0.sub0_sub1
@@ -5137,21 +5137,21 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_1024_w128
-    ; CHECK: undef %3.sub0:sgpr_128 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_128 = S_MOV_B32 1
-    ; CHECK-NEXT: %3.sub2:sgpr_128 = S_MOV_B32 2
-    ; CHECK-NEXT: %3.sub3:sgpr_128 = S_MOV_B32 3
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_128 = S_MOV_B32 128
-    ; CHECK-NEXT: %4.sub1:sgpr_128 = S_MOV_B32 129
-    ; CHECK-NEXT: %4.sub2:sgpr_128 = S_MOV_B32 130
-    ; CHECK-NEXT: %4.sub3:sgpr_128 = S_MOV_B32 131
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_128 = S_MOV_B32 24
-    ; CHECK-NEXT: %5.sub1:sgpr_128 = S_MOV_B32 25
-    ; CHECK-NEXT: %5.sub2:sgpr_128 = S_MOV_B32 26
-    ; CHECK-NEXT: %5.sub3:sgpr_128 = S_MOV_B32 27
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 3
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 128
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 129
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 130
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 131
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_128 = S_MOV_B32 24
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_128 = S_MOV_B32 25
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub2:sgpr_128 = S_MOV_B32 26
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub3:sgpr_128 = S_MOV_B32 27
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_1024 = S_MOV_B32 00
     %0.sub1:sgpr_1024 = S_MOV_B32 01
     %0.sub2:sgpr_1024 = S_MOV_B32 02
@@ -5179,33 +5179,33 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_1024_w256
-    ; CHECK: undef %3.sub0:sgpr_256 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_256 = S_MOV_B32 1
-    ; CHECK-NEXT: %3.sub2:sgpr_256 = S_MOV_B32 2
-    ; CHECK-NEXT: %3.sub3:sgpr_256 = S_MOV_B32 3
-    ; CHECK-NEXT: %3.sub4:sgpr_256 = S_MOV_B32 4
-    ; CHECK-NEXT: %3.sub5:sgpr_256 = S_MOV_B32 5
-    ; CHECK-NEXT: %3.sub6:sgpr_256 = S_MOV_B32 6
-    ; CHECK-NEXT: %3.sub7:sgpr_256 = S_MOV_B32 7
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_256 = S_MOV_B32 124
-    ; CHECK-NEXT: %4.sub1:sgpr_256 = S_MOV_B32 125
-    ; CHECK-NEXT: %4.sub2:sgpr_256 = S_MOV_B32 126
-    ; CHECK-NEXT: %4.sub3:sgpr_256 = S_MOV_B32 127
-    ; CHECK-NEXT: %4.sub4:sgpr_256 = S_MOV_B32 128
-    ; CHECK-NEXT: %4.sub5:sgpr_256 = S_MOV_B32 129
-    ; CHECK-NEXT: %4.sub6:sgpr_256 = S_MOV_B32 130
-    ; CHECK-NEXT: %4.sub7:sgpr_256 = S_MOV_B32 131
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_256 = S_MOV_B32 24
-    ; CHECK-NEXT: %5.sub1:sgpr_256 = S_MOV_B32 25
-    ; CHECK-NEXT: %5.sub2:sgpr_256 = S_MOV_B32 26
-    ; CHECK-NEXT: %5.sub3:sgpr_256 = S_MOV_B32 27
-    ; CHECK-NEXT: %5.sub4:sgpr_256 = S_MOV_B32 28
-    ; CHECK-NEXT: %5.sub5:sgpr_256 = S_MOV_B32 29
-    ; CHECK-NEXT: %5.sub6:sgpr_256 = S_MOV_B32 210
-    ; CHECK-NEXT: %5.sub7:sgpr_256 = S_MOV_B32 211
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 3
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 4
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 5
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 6
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 7
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 124
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 125
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 126
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 127
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 128
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 129
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 130
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 131
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_256 = S_MOV_B32 24
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_256 = S_MOV_B32 25
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub2:sgpr_256 = S_MOV_B32 26
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub3:sgpr_256 = S_MOV_B32 27
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub4:sgpr_256 = S_MOV_B32 28
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub5:sgpr_256 = S_MOV_B32 29
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub6:sgpr_256 = S_MOV_B32 210
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub7:sgpr_256 = S_MOV_B32 211
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_1024 = S_MOV_B32 00
     %0.sub1:sgpr_1024 = S_MOV_B32 01
     %0.sub2:sgpr_1024 = S_MOV_B32 02
@@ -5243,57 +5243,57 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_sgpr_1024_w512
-    ; CHECK: undef %3.sub0:sgpr_512 = S_MOV_B32 0
-    ; CHECK-NEXT: %3.sub1:sgpr_512 = S_MOV_B32 1
-    ; CHECK-NEXT: %3.sub2:sgpr_512 = S_MOV_B32 2
-    ; CHECK-NEXT: %3.sub3:sgpr_512 = S_MOV_B32 3
-    ; CHECK-NEXT: %3.sub4:sgpr_512 = S_MOV_B32 4
-    ; CHECK-NEXT: %3.sub5:sgpr_512 = S_MOV_B32 5
-    ; CHECK-NEXT: %3.sub6:sgpr_512 = S_MOV_B32 6
-    ; CHECK-NEXT: %3.sub7:sgpr_512 = S_MOV_B32 7
-    ; CHECK-NEXT: %3.sub8:sgpr_512 = S_MOV_B32 8
-    ; CHECK-NEXT: %3.sub9:sgpr_512 = S_MOV_B32 9
-    ; CHECK-NEXT: %3.sub10:sgpr_512 = S_MOV_B32 10
-    ; CHECK-NEXT: %3.sub11:sgpr_512 = S_MOV_B32 11
-    ; CHECK-NEXT: %3.sub12:sgpr_512 = S_MOV_B32 12
-    ; CHECK-NEXT: %3.sub13:sgpr_512 = S_MOV_B32 13
-    ; CHECK-NEXT: %3.sub14:sgpr_512 = S_MOV_B32 14
-    ; CHECK-NEXT: %3.sub15:sgpr_512 = S_MOV_B32 15
-    ; CHECK-NEXT: S_NOP 0, implicit %3
-    ; CHECK-NEXT: undef %4.sub0:sgpr_512 = S_MOV_B32 116
-    ; CHECK-NEXT: %4.sub1:sgpr_512 = S_MOV_B32 117
-    ; CHECK-NEXT: %4.sub2:sgpr_512 = S_MOV_B32 118
-    ; CHECK-NEXT: %4.sub3:sgpr_512 = S_MOV_B32 119
-    ; CHECK-NEXT: %4.sub4:sgpr_512 = S_MOV_B32 120
-    ; CHECK-NEXT: %4.sub5:sgpr_512 = S_MOV_B32 121
-    ; CHECK-NEXT: %4.sub6:sgpr_512 = S_MOV_B32 122
-    ; CHECK-NEXT: %4.sub7:sgpr_512 = S_MOV_B32 123
-    ; CHECK-NEXT: %4.sub8:sgpr_512 = S_MOV_B32 124
-    ; CHECK-NEXT: %4.sub9:sgpr_512 = S_MOV_B32 125
-    ; CHECK-NEXT: %4.sub10:sgpr_512 = S_MOV_B32 126
-    ; CHECK-NEXT: %4.sub11:sgpr_512 = S_MOV_B32 127
-    ; CHECK-NEXT: %4.sub12:sgpr_512 = S_MOV_B32 128
-    ; CHECK-NEXT: %4.sub13:sgpr_512 = S_MOV_B32 129
-    ; CHECK-NEXT: %4.sub14:sgpr_512 = S_MOV_B32 130
-    ; CHECK-NEXT: %4.sub15:sgpr_512 = S_MOV_B32 131
-    ; CHECK-NEXT: S_NOP 0, implicit %4
-    ; CHECK-NEXT: undef %5.sub0:sgpr_512 = S_MOV_B32 24
-    ; CHECK-NEXT: %5.sub1:sgpr_512 = S_MOV_B32 25
-    ; CHECK-NEXT: %5.sub2:sgpr_512 = S_MOV_B32 26
-    ; CHECK-NEXT: %5.sub3:sgpr_512 = S_MOV_B32 27
-    ; CHECK-NEXT: %5.sub4:sgpr_512 = S_MOV_B32 28
-    ; CHECK-NEXT: %5.sub5:sgpr_512 = S_MOV_B32 29
-    ; CHECK-NEXT: %5.sub6:sgpr_512 = S_MOV_B32 210
-    ; CHECK-NEXT: %5.sub7:sgpr_512 = S_MOV_B32 211
-    ; CHECK-NEXT: %5.sub8:sgpr_512 = S_MOV_B32 212
-    ; CHECK-NEXT: %5.sub9:sgpr_512 = S_MOV_B32 213
-    ; CHECK-NEXT: %5.sub10:sgpr_512 = S_MOV_B32 214
-    ; CHECK-NEXT: %5.sub11:sgpr_512 = S_MOV_B32 215
-    ; CHECK-NEXT: %5.sub12:sgpr_512 = S_MOV_B32 216
-    ; CHECK-NEXT: %5.sub13:sgpr_512 = S_MOV_B32 217
-    ; CHECK-NEXT: %5.sub14:sgpr_512 = S_MOV_B32 218
-    ; CHECK-NEXT: %5.sub15:sgpr_512 = S_MOV_B32 219
-    ; CHECK-NEXT: S_NOP 0, implicit %5
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_512 = S_MOV_B32 0
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_512 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub2:sgpr_512 = S_MOV_B32 2
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub3:sgpr_512 = S_MOV_B32 3
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub4:sgpr_512 = S_MOV_B32 4
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub5:sgpr_512 = S_MOV_B32 5
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub6:sgpr_512 = S_MOV_B32 6
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub7:sgpr_512 = S_MOV_B32 7
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub8:sgpr_512 = S_MOV_B32 8
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub9:sgpr_512 = S_MOV_B32 9
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub10:sgpr_512 = S_MOV_B32 10
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub11:sgpr_512 = S_MOV_B32 11
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub12:sgpr_512 = S_MOV_B32 12
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub13:sgpr_512 = S_MOV_B32 13
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub14:sgpr_512 = S_MOV_B32 14
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub15:sgpr_512 = S_MOV_B32 15
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_1:%[0-9]+]].sub0:sgpr_512 = S_MOV_B32 116
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub1:sgpr_512 = S_MOV_B32 117
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub2:sgpr_512 = S_MOV_B32 118
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub3:sgpr_512 = S_MOV_B32 119
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub4:sgpr_512 = S_MOV_B32 120
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub5:sgpr_512 = S_MOV_B32 121
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub6:sgpr_512 = S_MOV_B32 122
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub7:sgpr_512 = S_MOV_B32 123
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub8:sgpr_512 = S_MOV_B32 124
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub9:sgpr_512 = S_MOV_B32 125
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub10:sgpr_512 = S_MOV_B32 126
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub11:sgpr_512 = S_MOV_B32 127
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub12:sgpr_512 = S_MOV_B32 128
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub13:sgpr_512 = S_MOV_B32 129
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub14:sgpr_512 = S_MOV_B32 130
+    ; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]].sub15:sgpr_512 = S_MOV_B32 131
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_1]]
+    ; CHECK-NEXT: undef [[S_MOV_B32_2:%[0-9]+]].sub0:sgpr_512 = S_MOV_B32 24
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub1:sgpr_512 = S_MOV_B32 25
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub2:sgpr_512 = S_MOV_B32 26
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub3:sgpr_512 = S_MOV_B32 27
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub4:sgpr_512 = S_MOV_B32 28
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub5:sgpr_512 = S_MOV_B32 29
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub6:sgpr_512 = S_MOV_B32 210
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub7:sgpr_512 = S_MOV_B32 211
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub8:sgpr_512 = S_MOV_B32 212
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub9:sgpr_512 = S_MOV_B32 213
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub10:sgpr_512 = S_MOV_B32 214
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub11:sgpr_512 = S_MOV_B32 215
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub12:sgpr_512 = S_MOV_B32 216
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub13:sgpr_512 = S_MOV_B32 217
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub14:sgpr_512 = S_MOV_B32 218
+    ; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]].sub15:sgpr_512 = S_MOV_B32 219
+    ; CHECK-NEXT: S_NOP 0, implicit [[S_MOV_B32_2]]
     undef %0.sub0:sgpr_1024 = S_MOV_B32 00
     %0.sub1:sgpr_1024 = S_MOV_B32 01
     %0.sub2:sgpr_1024 = S_MOV_B32 02
diff --git a/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses.mir b/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses.mir
index 135d8b8e8ae97..58753081198cf 100644
--- a/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses.mir
+++ b/llvm/test/CodeGen/AMDGPU/rewrite-partial-reg-uses.mir
@@ -7,26 +7,26 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_subregs_composition_vreg_1024
-    ; CHECK: undef %5.sub0:vreg_96 = V_MOV_B32_e32 1, implicit $exec
-    ; CHECK-NEXT: %5.sub1:vreg_96 = V_MOV_B32_e32 2, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %5.sub0_sub1
-    ; CHECK-NEXT: S_NOP 0, implicit %5.sub1_sub2
-    ; CHECK-NEXT: undef %6.sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
-    ; CHECK-NEXT: %6.sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %6.sub0_sub1_sub2
-    ; CHECK-NEXT: S_NOP 0, implicit %6.sub1_sub2_sub3
-    ; CHECK-NEXT: undef %7.sub0:vreg_160 = V_MOV_B32_e32 21, implicit $exec
-    ; CHECK-NEXT: %7.sub1:vreg_160 = V_MOV_B32_e32 22, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %7.sub0_sub1_sub2_sub3
-    ; CHECK-NEXT: S_NOP 0, implicit %7.sub1_sub2_sub3_sub4
-    ; CHECK-NEXT: undef %8.sub0:vreg_192 = V_MOV_B32_e32 31, implicit $exec
-    ; CHECK-NEXT: %8.sub1:vreg_192 = V_MOV_B32_e32 32, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %8.sub0_sub1_sub2_sub3_sub4
-    ; CHECK-NEXT: S_NOP 0, implicit %8.sub1_sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: undef %9.sub0:vreg_256 = V_MOV_B32_e32 41, implicit $exec
-    ; CHECK-NEXT: %9.sub2:vreg_256 = V_MOV_B32_e32 43, implicit $exec
-    ; CHECK-NEXT: S_NOP 0, implicit %9.sub0_sub1_sub2_sub3_sub4_sub5
-    ; CHECK-NEXT: S_NOP 0, implicit %9.sub2_sub3_sub4_sub5_sub6_sub7
+    ; CHECK: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_96 = V_MOV_B32_e32 1, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_96 = V_MOV_B32_e32 2, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub0_sub1
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub1_sub2
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_1:%[0-9]+]].sub0:vreg_128 = V_MOV_B32_e32 11, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]].sub1:vreg_128 = V_MOV_B32_e32 12, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub0_sub1_sub2
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_1]].sub1_sub2_sub3
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_2:%[0-9]+]].sub0:vreg_160 = V_MOV_B32_e32 21, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]].sub1:vreg_160 = V_MOV_B32_e32 22, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub0_sub1_sub2_sub3
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_2]].sub1_sub2_sub3_sub4
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_3:%[0-9]+]].sub0:vreg_192 = V_MOV_B32_e32 31, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_3:%[0-9]+]].sub1:vreg_192 = V_MOV_B32_e32 32, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_3]].sub0_sub1_sub2_sub3_sub4
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_3]].sub1_sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: undef [[V_MOV_B32_e32_4:%[0-9]+]].sub0:vreg_256 = V_MOV_B32_e32 41, implicit $exec
+    ; CHECK-NEXT: [[V_MOV_B32_e32_4:%[0-9]+]].sub2:vreg_256 = V_MOV_B32_e32 43, implicit $exec
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_4]].sub0_sub1_sub2_sub3_sub4_sub5
+    ; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_4]].sub2_sub3_sub4_sub5_sub6_sub7
     undef %0.sub1:vreg_1024 = V_MOV_B32_e32 01, implicit $exec
     %0.sub2:vreg_1024 = V_MOV_B32_e32 02, implicit $exec
     S_NOP 0, implicit %0.sub1_sub2
@@ -58,9 +58,9 @@ tracksRegLiveness: true
 body:             |
   bb.0:
     ; CHECK-LABEL: name: test_subregs_unknown_regclass_from_instructions
-    ; CHECK: undef %2.sub0:sgpr_64 = S_MOV_B32 1
-    ; CHECK-NEXT: %2.sub1:sgpr_64 = S_MOV_B32 2
-    ; CHECK-NEXT: dead [[COPY:%[0-9]+]]:vreg_64 = COPY %2
+    ; CHECK: undef [[S_MOV_B32_:%[0-9]+]].sub0:sgpr_64 = S_MOV_B32 1
+    ; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]].sub1:sgpr_64 = S_MOV_B32 2
+    ; CHECK-NEXT: dead [[COPY:%[0-9]+]]:vreg_64 = COPY [[S_MOV_B32_]]
     undef %0.sub4:sgpr_1024 = S_MOV_B32 01
     %0.sub5:sgpr_1024 = S_MOV_B32 02
     %1:vreg_64 = COPY %0.sub4_sub5