llvm/test/CodeGen/X86/machine-copy-dbgvalue.mir

# RUN: llc -mtriple=i686-- -run-pass machine-cp -verify-machineinstrs -o - %s | FileCheck %s


---
# Test that machine copy propagation ignores DBG_VALUE and DBL_VALUE_LIST and updates it.
# CHECK-LABEL: name: foo
# CHECK: bb.0:
# CHECK-NEXT: $rax = MOV64ri 31
# CHECK-NEXT: DBG_VALUE $rax
# CHECK-NEXT: DBG_VALUE_LIST 0, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_constu, 4, DW_OP_mul, DW_OP_plus, DW_OP_stack_value), $rax, 0, 0
# CHECK-NEXT: RET64 implicit killed $rax
name: foo
body: |
  bb.0:
    renamable $rcx = MOV64ri 31
    DBG_VALUE $rcx, 0, 0, 0, 0
    DBG_VALUE_LIST 0, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_constu, 4, DW_OP_mul, DW_OP_plus, DW_OP_stack_value), $rcx, 0, 0
    $rax = COPY killed renamable $rcx
    RET64 implicit killed $rax
...