src/llvm-project/llvm/test/CodeGen/X86/scavenger.mir

# RUN: llc -mtriple=i386-- -run-pass scavenger-test -verify-machineinstrs -o - %s | FileCheck %s
---
# CHECK-LABEL: name: func0
name: func0
tracksRegLiveness: true
body: |
  bb.0:
    ; CHECK: [[REG0:\$e[a-z]+]] = MOV32ri 42
    ; CHECK: $ebp = COPY killed [[REG0]]
    %0 : gr32 = MOV32ri 42
    $ebp = COPY %0
...
---
# CHECK-LABEL: name: func2
name: func2
tracksRegLiveness: true
body: |
  bb.0:
    ; CHECK-NOT: $eax = MOV32ri 42
    ; CHECK: [[REG0:\$e[a-z]+]] = MOV32ri 42
    ; CHECK: $ebp = COPY killed [[REG0]]
    $eax = MOV32ri 13
    %0 : gr32 = MOV32ri 42
    $ebp = COPY %0

    ; CHECK: [[REG1:\$e[a-z]+]] = MOV32ri 23
    ; CHECK: [[REG2:\$e[a-z]+]] = MOV32ri 7
    ; CHECK: [[REG1]] = ADD32ri8 [[REG1]], 5, implicit-def dead $eflags
    %1 : gr32 = MOV32ri 23
    %2 : gr32 = MOV32ri 7
    %1 = ADD32ri8 %1, 5, implicit-def dead $eflags

    NOOP implicit $ebp

    ; CHECK: NOOP implicit killed [[REG2]]
    ; CHECK: NOOP implicit killed [[REG1]]
    NOOP implicit %2
    NOOP implicit %1
    RETQ $eax
...
---
# CHECK-LABEL: name: func3
name: func3
tracksRegLiveness: true
body: |
  bb.0:
    ; CHECK dead {{\$e[a-z]+}} = MOV32ri 42
    dead %0 : gr32 = MOV32ri 42
...