diff --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.udot2.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.udot2.ll
index d1f1b16a612f40..5a413ebc18cb99 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.udot2.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.udot2.ll
@@ -3,8 +3,9 @@
 ; RUN: llc -march=amdgcn -mcpu=gfx1012 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=GCN,GFX10
 
 declare i32 @llvm.amdgcn.udot2(<2 x i16> %a, <2 x i16> %b, i32 %c, i1 %clamp)
+declare i32 @llvm.amdgcn.workitem.id.x()
 
-; GCN-LABEL: {{^}}test_llvm_amdgcn_udot2_clamp
+; GCN-LABEL: {{^}}test_llvm_amdgcn_udot2_clamp:
 ; GFX906: v_dot2_u32_u16 v{{[0-9]+}}, s{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}} clamp{{$}}
 ; GFX10:  v_dot2_u32_u16 v{{[0-9]+}}, s{{[0-9]+}}, s{{[0-9]+}}, v{{[0-9]+}} clamp{{$}}
 define amdgpu_kernel void @test_llvm_amdgcn_udot2_clamp(
@@ -21,7 +22,7 @@ entry:
   ret void
 }
 
-; GCN-LABEL: {{^}}test_llvm_amdgcn_udot2_no_clamp
+; GCN-LABEL: {{^}}test_llvm_amdgcn_udot2_no_clamp:
 ; GFX906: v_dot2_u32_u16 v{{[0-9]+}}, s{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}{{$}}
 ; GFX10:  v_dot2_u32_u16 v{{[0-9]+}}, s{{[0-9]+}}, s{{[0-9]+}}, v{{[0-9]+}}{{$}}
 define amdgpu_kernel void @test_llvm_amdgcn_udot2_no_clamp(
@@ -37,3 +38,23 @@ entry:
   store i32 %r.val, i32 addrspace(1)* %r
   ret void
 }
+
+; GCN-LABEL: {{^}}test_llvm_amdgcn_udot2_op_sel:
+; GFX906: v_dot2_u32_u16 v{{[0-9]+}}, 1, v{{[0-9]+}}, s{{[0-9]+}} op_sel:[0,1,0] op_sel_hi:[0,0,1]{{$}}
+; GFX10:  v_dot2_u32_u16 v{{[0-9]+}}, 1, v{{[0-9]+}}, s{{[0-9]+}} op_sel:[0,1,0] op_sel_hi:[0,0,1]{{$}}
+define amdgpu_kernel void @test_llvm_amdgcn_udot2_op_sel(
+    i32 addrspace(1)* %r,
+    <2 x i16> addrspace(1)* %b,
+    i32 %c) {
+entry:
+  %id = tail call i32 @llvm.amdgcn.workitem.id.x()
+  %b.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %b, i32 %id
+  %b.val = load <2 x i16>, <2 x i16> addrspace(1)* %b.gep
+  %b.elt0 = extractelement <2 x i16> %b.val, i32 0
+  %b.elt1 = extractelement <2 x i16> %b.val, i32 1
+  %b0 = insertelement <2 x i16> undef, i16 %b.elt1, i32 0
+  %b1 = insertelement <2 x i16> %b0, i16 %b.elt0, i32 1
+  %r.val = call i32 @llvm.amdgcn.udot2(<2 x i16> <i16 1, i16 1>, <2 x i16> %b1, i32 %c, i1 0)
+  store i32 %r.val, i32 addrspace(1)* %r
+  ret void
+}