test/CodeGen/AMDGPU/optimize-exec-masking-debug-limit.mir

# RUN: llc -mtriple=amdgpu10.10 -run-pass=si-optimize-exec-masking %s -o - | FileCheck %s

# Debug instructions must not consume findExecCopy's 25-instruction search
# limit or hide the copy from exec.
--- |
  define void @ignore_debug_in_find_exec_copy() !dbg !5 {
  entry:
      #dbg_value(i32 0, !9, !DIExpression(), !11)
    unreachable, !dbg !11
  }

  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!4}

  !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
  !1 = !DIFile(filename: "optimize-exec-masking-debug-limit.mir", directory: "/")
  !4 = !{i32 2, !"Debug Info Version", i32 3}
  !5 = distinct !DISubprogram(name: "ignore_debug_in_find_exec_copy", linkageName: "ignore_debug_in_find_exec_copy", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
  !6 = !DISubroutineType(types: !7)
  !7 = !{}
  !8 = !{!9}
  !9 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !10)
  !10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
  !11 = !DILocation(line: 1, column: 1, scope: !5)
...
---
name:            ignore_debug_in_find_exec_copy
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr2

    ; CHECK-LABEL: name: ignore_debug_in_find_exec_copy
    ; CHECK: $sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0
    renamable $sgpr0 = V_CMP_GT_U32_e64 $sgpr2, killed $vgpr0, implicit $exec
    DBG_VALUE $sgpr0, $noreg, !9, !DIExpression(), debug-location !11
    $sgpr1 = COPY $exec_lo, implicit-def $exec_lo
    DBG_VALUE $sgpr1, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $exec_lo, $noreg, !9, !DIExpression(), debug-location !11
    $sgpr1 = S_AND_B32 killed renamable $sgpr1, killed renamable $sgpr0, implicit-def dead $scc
    DBG_VALUE $sgpr1, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $scc, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    DBG_VALUE $noreg, $noreg, !9, !DIExpression(), debug-location !11
    $exec_lo = S_MOV_B32_term killed renamable $sgpr1
...