llvm/test/DebugInfo/MIR/X86/singlelocation-cutoffs.mir

# Test cutoffs for single-location variable analysis.
# Disable validThroughout if the input size exceeds the specified limit

# RUN: llc %s -o - -start-after=livedebugvalues -mtriple=x86_64-unknown-unknown \
# RUN:   --singlevarlocation-input-bb-limit=0 -filetype=obj\
# RUN:   | llvm-dwarfdump -v -\
# RUN:   | FileCheck %s -check-prefix=LIMITED

# RUN: llc %s -o - -start-after=livedebugvalues -mtriple=x86_64-unknown-unknown \
# RUN: --singlevarlocation-input-bb-limit=20 -filetype=obj | llvm-dwarfdump -v -\
# RUN:   | FileCheck %s -check-prefix=UNLIMITED

# LIMITED: DW_AT_location [DW_FORM_sec_offset]

# UNLIMITED: DW_AT_location [DW_FORM_exprloc]

--- |
  target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"

  declare i32 @use(i32)

  define i32 @foo(i32 %x) !dbg !6 {
  entry:
    ret i32 1, !dbg !15
  }

  declare void @llvm.dbg.value(metadata, metadata, metadata)

  !llvm.dbg.cu = !{!0}
  !llvm.debugify = !{!3, !4}
  !llvm.module.flags = !{!5}

  !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
  !1 = !DIFile(filename: "/tmp/t.ll", directory: "/")
  !2 = !{}
  !3 = !{i32 4}
  !4 = !{i32 2}
  !5 = !{i32 2, !"Debug Info Version", i32 3}
  !6 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !7, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
  !7 = !DISubroutineType(types: !2)
  !8 = !{!9, !11}
  !9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
  !10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
  !11 = !DILocalVariable(name: "2", scope: !6, file: !1, line: 3, type: !10)
  !12 = !DILocation(line: 1, column: 1, scope: !6)
  !13 = !DILocation(line: 2, column: 1, scope: !6)
  !14 = !DILocation(line: 3, column: 1, scope: !6)
  !15 = !DILocation(line: 4, column: 1, scope: !6)

...
---
name:            foo
liveins:
  - { reg: '$edi', virtual-reg: '' }
stack:
  - { id: 0, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
body:             |
  bb.0.entry:
    liveins: $edi
    DBG_VALUE renamable $edi, $noreg, !11, !DIExpression(), debug-location !14
    RETQ debug-location !14

...