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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/coalesce-commutative-tied-def-subreg.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=x86_64 -run-pass=register-coalescer -verify-coalescing -o - %s | FileCheck %s
# The COPY can't be removed by commuting the AND since the instruction only partially defines the register
---
name: commute_tied_subreg_def_part
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: commute_tied_subreg_def_part
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[DEF:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = IMPLICIT_DEF
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[MOV32ri:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32ri 0
; CHECK-NEXT: [[MOV32ri:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = AND32rr [[MOV32ri]].sub_32bit, [[DEF]].sub_32bit, implicit-def dead $eflags
; CHECK-NEXT: [[DEF:%[0-9]+]]:gr64_with_sub_8bit = COPY [[MOV32ri]]
; CHECK-NEXT: JMP_1 %bb.1
bb.0:
undef %0.sub_32bit:gr64_with_sub_8bit = IMPLICIT_DEF
bb.1:
undef %1.sub_32bit:gr64_with_sub_8bit = MOV32ri 0
%1.sub_32bit:gr64_with_sub_8bit = AND32rr %1.sub_32bit, %0.sub_32bit, implicit-def dead $eflags
%0:gr64_with_sub_8bit = COPY %1
JMP_1 %bb.1
...
# The COPY can be removed by commuting the AND since the instruction defines the entire register
---
name: commute_tied_subreg_def_full
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: commute_tied_subreg_def_full
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[DEF:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = IMPLICIT_DEF
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[MOV32ri:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32ri 0
; CHECK-NEXT: [[DEF:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = AND32rr [[DEF]].sub_32bit, [[MOV32ri]].sub_32bit, implicit-def dead $eflags, implicit-def [[DEF]]
; CHECK-NEXT: JMP_1 %bb.1
bb.0:
undef %0.sub_32bit:gr64_with_sub_8bit = IMPLICIT_DEF
bb.1:
undef %1.sub_32bit:gr64_with_sub_8bit = MOV32ri 0
%1.sub_32bit:gr64_with_sub_8bit = AND32rr %1.sub_32bit, %0.sub_32bit, implicit-def dead $eflags, implicit-def %1
%0:gr64_with_sub_8bit = COPY %1
JMP_1 %bb.1
...