diff --git a/llvm/lib/Target/AArch64/GISel/select-saddo.mir b/llvm/lib/Target/AArch64/GISel/select-saddo.mir
deleted file mode 100644
index 6f05bd7ac838b..0000000000000
--- a/llvm/lib/Target/AArch64/GISel/select-saddo.mir
+++ /dev/null
@@ -1,158 +0,0 @@
-# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
-# RUN: llc -verify-machineinstrs -mtriple aarch64-unknown-uknown -global-isel -run-pass=instruction-select %s -o - | FileCheck %s
-
-...
----
-name:            saddo_s32
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-
-    ; CHECK-LABEL: name: saddo_s32
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %reg0:gpr32 = COPY $w0
-    ; CHECK: %reg1:gpr32 = COPY $w1
-    ; CHECK: %saddo:gpr32 = ADDSWrr %reg0, %reg1, implicit-def $nzcv
-    ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %saddo
-    ; CHECK: RET_ReallyLR implicit $w0
-    %reg0:gpr(s32) = COPY $w0
-    %reg1:gpr(s32) = COPY $w1
-    %saddo:gpr(s32), %4:gpr(s1) = G_SADDO %reg0, %reg1
-    $w0 = COPY %saddo(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            saddo_s64
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $x0, $x1, $x2
-
-    ; CHECK-LABEL: name: saddo_s64
-    ; CHECK: liveins: $x0, $x1, $x2
-    ; CHECK: %reg0:gpr64 = COPY $x0
-    ; CHECK: %reg1:gpr64 = COPY $x1
-    ; CHECK: %saddo:gpr64 = ADDSXrr %reg0, %reg1, implicit-def $nzcv
-    ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $x0 = COPY %saddo
-    ; CHECK: RET_ReallyLR implicit $x0
-    %reg0:gpr(s64) = COPY $x0
-    %reg1:gpr(s64) = COPY $x1
-    %saddo:gpr(s64), %4:gpr(s1) = G_SADDO %reg0, %reg1
-    $x0 = COPY %saddo(s64)
-    RET_ReallyLR implicit $x0
-
-...
----
-name:            saddo_s32_imm
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-    ; Check that we get ADDSWri when we can fold in a constant.
-    ;
-    ; CHECK-LABEL: name: saddo_s32_imm
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %copy:gpr32sp = COPY $w0
-    ; CHECK: %saddo:gpr32 = ADDSWri %copy, 16, 0, implicit-def $nzcv
-    ; CHECK: %overflow:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %saddo
-    ; CHECK: RET_ReallyLR implicit $w0
-    %copy:gpr(s32) = COPY $w0
-    %constant:gpr(s32) = G_CONSTANT i32 16
-    %saddo:gpr(s32), %overflow:gpr(s1) = G_SADDO %copy, %constant
-    $w0 = COPY %saddo(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            saddo_s32_shifted
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-    ; Check that we get ADDSWrs when we can fold in a shift.
-    ;
-    ; CHECK-LABEL: name: saddo_s32_shifted
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %reg0:gpr32 = COPY $w0
-    ; CHECK: %reg1:gpr32 = COPY $w1
-    ; CHECK: %add:gpr32 = ADDSWrs %reg0, %reg1, 16, implicit-def $nzcv
-    ; CHECK: %overflow:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %add
-    ; CHECK: RET_ReallyLR implicit $w0
-    %reg0:gpr(s32) = COPY $w0
-    %reg1:gpr(s32) = COPY $w1
-    %constant:gpr(s32) = G_CONSTANT i32 16
-    %shift:gpr(s32) = G_SHL %reg1(s32), %constant(s32)
-    %add:gpr(s32), %overflow:gpr(s1) = G_SADDO %reg0, %shift
-    $w0 = COPY %add(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            saddo_s32_neg_imm
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-    ; Check that we get SUBSWri when we can fold in a negative constant.
-    ;
-    ; CHECK-LABEL: name: saddo_s32_neg_imm
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %copy:gpr32sp = COPY $w0
-    ; CHECK: %add:gpr32 = SUBSWri %copy, 16, 0, implicit-def $nzcv
-    ; CHECK: %overflow:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %add
-    ; CHECK: RET_ReallyLR implicit $w0
-    %copy:gpr(s32) = COPY $w0
-    %constant:gpr(s32) = G_CONSTANT i32 -16
-    %add:gpr(s32), %overflow:gpr(s1) = G_SADDO %copy, %constant
-    $w0 = COPY %add(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            saddo_arith_extended
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $x0
-    ; Check that we get ADDSXrx.
-    ; CHECK-LABEL: name: saddo_arith_extended
-    ; CHECK: liveins: $w0, $x0
-    ; CHECK: %reg0:gpr64sp = COPY $x0
-    ; CHECK: %reg1:gpr32 = COPY $w0
-    ; CHECK: %add:gpr64 = ADDSXrx %reg0, %reg1, 18, implicit-def $nzcv
-    ; CHECK: %flags:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $x0 = COPY %add
-    ; CHECK: RET_ReallyLR implicit $x0
-    %reg0:gpr(s64) = COPY $x0
-    %reg1:gpr(s32) = COPY $w0
-    %ext:gpr(s64) = G_ZEXT %reg1(s32)
-    %cst:gpr(s64) = G_CONSTANT i64 2
-    %shift:gpr(s64) = G_SHL %ext, %cst(s64)
-    %add:gpr(s64), %flags:gpr(s1) = G_SADDO %reg0, %shift
-    $x0 = COPY %add(s64)
-    RET_ReallyLR implicit $x0
diff --git a/llvm/lib/Target/AArch64/GISel/select-ssubo.mir b/llvm/lib/Target/AArch64/GISel/select-ssubo.mir
deleted file mode 100644
index f6b1794645f7f..0000000000000
--- a/llvm/lib/Target/AArch64/GISel/select-ssubo.mir
+++ /dev/null
@@ -1,158 +0,0 @@
-# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
-# RUN: llc -verify-machineinstrs -mtriple aarch64-unknown-uknown -global-isel -run-pass=instruction-select %s -o - | FileCheck %s
-
-...
----
-name:            ssubo_s32
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-
-    ; CHECK-LABEL: name: ssubo_s32
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %reg0:gpr32 = COPY $w0
-    ; CHECK: %reg1:gpr32 = COPY $w1
-    ; CHECK: %ssubo:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv
-    ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %ssubo
-    ; CHECK: RET_ReallyLR implicit $w0
-    %reg0:gpr(s32) = COPY $w0
-    %reg1:gpr(s32) = COPY $w1
-    %ssubo:gpr(s32), %4:gpr(s1) = G_SSUBO %reg0, %reg1
-    $w0 = COPY %ssubo(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            ssubo_s64
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $x0, $x1, $x2
-
-    ; CHECK-LABEL: name: ssubo_s64
-    ; CHECK: liveins: $x0, $x1, $x2
-    ; CHECK: %reg0:gpr64 = COPY $x0
-    ; CHECK: %reg1:gpr64 = COPY $x1
-    ; CHECK: %ssubo:gpr64 = SUBSXrr %reg0, %reg1, implicit-def $nzcv
-    ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $x0 = COPY %ssubo
-    ; CHECK: RET_ReallyLR implicit $x0
-    %reg0:gpr(s64) = COPY $x0
-    %reg1:gpr(s64) = COPY $x1
-    %ssubo:gpr(s64), %4:gpr(s1) = G_SSUBO %reg0, %reg1
-    $x0 = COPY %ssubo(s64)
-    RET_ReallyLR implicit $x0
-
-...
----
-name:            ssubo_s32_imm
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-    ; Check that we get SUBSWri when we can fold in a constant.
-    ;
-    ; CHECK-LABEL: name: ssubo_s32_imm
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %copy:gpr32sp = COPY $w0
-    ; CHECK: %ssubo:gpr32 = SUBSWri %copy, 16, 0, implicit-def $nzcv
-    ; CHECK: %overflow:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %ssubo
-    ; CHECK: RET_ReallyLR implicit $w0
-    %copy:gpr(s32) = COPY $w0
-    %constant:gpr(s32) = G_CONSTANT i32 16
-    %ssubo:gpr(s32), %overflow:gpr(s1) = G_SSUBO %copy, %constant
-    $w0 = COPY %ssubo(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            ssubo_s32_shifted
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-    ; Check that we get SUBSWrs when we can fold in a shift.
-    ;
-    ; CHECK-LABEL: name: ssubo_s32_shifted
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %reg0:gpr32 = COPY $w0
-    ; CHECK: %reg1:gpr32 = COPY $w1
-    ; CHECK: %sub:gpr32 = SUBSWrs %reg0, %reg1, 16, implicit-def $nzcv
-    ; CHECK: %overflow:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %sub
-    ; CHECK: RET_ReallyLR implicit $w0
-    %reg0:gpr(s32) = COPY $w0
-    %reg1:gpr(s32) = COPY $w1
-    %constant:gpr(s32) = G_CONSTANT i32 16
-    %shift:gpr(s32) = G_SHL %reg1(s32), %constant(s32)
-    %sub:gpr(s32), %overflow:gpr(s1) = G_SSUBO %reg0, %shift
-    $w0 = COPY %sub(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            ssubo_s32_neg_imm
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $w1, $x2
-    ; Check that we get ADDSWri when we can fold in a negative constant.
-    ;
-    ; CHECK-LABEL: name: ssubo_s32_neg_imm
-    ; CHECK: liveins: $w0, $w1, $x2
-    ; CHECK: %copy:gpr32sp = COPY $w0
-    ; CHECK: %sub:gpr32 = ADDSWri %copy, 16, 0, implicit-def $nzcv
-    ; CHECK: %overflow:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $w0 = COPY %sub
-    ; CHECK: RET_ReallyLR implicit $w0
-    %copy:gpr(s32) = COPY $w0
-    %constant:gpr(s32) = G_CONSTANT i32 -16
-    %sub:gpr(s32), %overflow:gpr(s1) = G_SSUBO %copy, %constant
-    $w0 = COPY %sub(s32)
-    RET_ReallyLR implicit $w0
-
-...
----
-name:            ssubo_arith_extended
-alignment:       4
-legalized:       true
-regBankSelected: true
-tracksRegLiveness: true
-body:             |
-  bb.1.entry:
-    liveins: $w0, $x0
-    ; Check that we get SUBSXrx.
-    ; CHECK-LABEL: name: ssubo_arith_extended
-    ; CHECK: liveins: $w0, $x0
-    ; CHECK: %reg0:gpr64sp = COPY $x0
-    ; CHECK: %reg1:gpr32 = COPY $w0
-    ; CHECK: %sub:gpr64 = SUBSXrx %reg0, %reg1, 18, implicit-def $nzcv
-    ; CHECK: %flags:gpr32 = CSINCWr $wzr, $wzr, 7, implicit $nzcv
-    ; CHECK: $x0 = COPY %sub
-    ; CHECK: RET_ReallyLR implicit $x0
-    %reg0:gpr(s64) = COPY $x0
-    %reg1:gpr(s32) = COPY $w0
-    %ext:gpr(s64) = G_ZEXT %reg1(s32)
-    %cst:gpr(s64) = G_CONSTANT i64 2
-    %shift:gpr(s64) = G_SHL %ext, %cst(s64)
-    %sub:gpr(s64), %flags:gpr(s1) = G_SSUBO %reg0, %shift
-    $x0 = COPY %sub(s64)
-    RET_ReallyLR implicit $x0