74 lines
3.1 KiB
LLVM
74 lines
3.1 KiB
LLVM
; RUN: llc -mtriple=x86_64-- %s -o - -O0 -stop-before=finalize-isel \
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; RUN: -experimental-debug-variable-locations \
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; RUN: | FileCheck %s --check-prefix=O0 --implicit-check-not=DBG_INSTR_REF
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; RUN: llc -mtriple=x86_64-- %s -o - -O2 -stop-before=finalize-isel \
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; RUN: -experimental-debug-variable-locations \
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; RUN: | FileCheck %s --check-prefix=O2 --implicit-check-not=DBG_VALUE
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; RUN: llc -mtriple=x86_64-- %s -o - -stop-before=finalize-isel \
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; RUN: -fast-isel -experimental-debug-variable-locations \
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; RUN: | FileCheck %s --check-prefix=FASTISEL --implicit-check-not=DBG_VALUE
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; Test that instruction-referencing variable locations are issued at -O2, but
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; normal DBG_VALUEs are issued at -O0. This behaviour is desired as the former
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; is slow when applied to unoptimized code.
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; (Copy + pasted from ./dead-store-elimination-marks-undef.ll),
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; O0-LABEL: name: main
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; O0: DBG_VALUE
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; O0-LABEL: name: fn_optnone
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; O0: DBG_VALUE
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; O2-LABEL: name: main
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; O2: DBG_INSTR_REF
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; O2-LABEL: name: fn_optnone
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; O2: DBG_VALUE
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; FASTISEL-LABEL: name: main
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; FASTISEL: DBG_INSTR_REF
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; FASTISEL-LABEL: name: fn_optnone
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; FASTISEL: DBG_VALUE
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@b = common dso_local local_unnamed_addr global i32 0, align 1
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define dso_local i32 @main() local_unnamed_addr !dbg !7 {
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%1 = alloca i32, align 4
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%2 = load i32, i32* @b, align 1, !dbg !13
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call void @llvm.dbg.value(metadata i32 %2, metadata !12, metadata !DIExpression()), !dbg !13
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store i32 %2, i32* %1, align 4, !dbg !13
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ret i32 0, !dbg !13
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}
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define dso_local i32 @fn_optnone() local_unnamed_addr #0 !dbg !27 {
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%1 = alloca i32, align 4
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%2 = load i32, i32* @b, align 1, !dbg !33
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call void @llvm.dbg.value(metadata i32 %2, metadata !32, metadata !DIExpression()), !dbg !33
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store i32 %2, i32* %1, align 4, !dbg !33
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ret i32 0, !dbg !33
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}
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attributes #0 = {optnone noinline}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, nameTableKind: None)
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!1 = !DIFile(filename: "dead-store-elimination-marks-undef.ll", directory: "/temp/bz45080")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !{!"clang version 10.0.0"}
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!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "l_2864", scope: !7, file: !1, line: 4, type: !10)
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!13 = !DILocation(line: 5, column: 12, scope: !7)
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!27 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !31)
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!31 = !{!32}
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!32 = !DILocalVariable(name: "l_2864", scope: !27, file: !1, line: 4, type: !10)
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!33 = !DILocation(line: 5, column: 12, scope: !27)
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