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08fbde827c
The debug-use flag must be set exactly for uses on DBG_VALUEs. This is so obvious that it can be trivially inferred while parsing. This will reduce noise when printing while omitting an information that has little value to the user. The parser will keep recognizing the flag for compatibility with old `.mir` files. Differential Revision: https://reviews.llvm.org/D53903 llvm-svn: 345671
59 lines
2.7 KiB
LLVM
59 lines
2.7 KiB
LLVM
; RUN: llc -O1 -filetype=asm -mtriple x86_64-unknown-linux-gnu -mcpu=x86-64 -o - %s -stop-after=livedebugvars | FileCheck %s
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; CHECK: $eax = MOV32rm
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; CHECK: DBG_VALUE $eax
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; CHECK: $eax = SHL32rCL killed renamable $eax
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; CHECK: DBG_VALUE $eax
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; CHECK: DBG_VALUE $rsp, 0, !{{[0-9]+}}, !DIExpression(DW_OP_constu, 4, DW_OP_minus)
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; CHECK: DBG_VALUE $eax
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; CHECK: $eax = SHL32rCL killed renamable $eax
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; CHECK: DBG_VALUE $eax
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; CHECK: RETQ $eax
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@var = local_unnamed_addr global i32 8, !dbg !0
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@sc = local_unnamed_addr global i32 1, !dbg !6
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define i32 @main() local_unnamed_addr !dbg !14 {
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entry:
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%0 = load i32, i32* @var
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tail call void @llvm.dbg.value(metadata i32 %0, metadata !18, metadata !DIExpression()), !dbg !20
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%1 = load i32, i32* @sc
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%shl = shl i32 %0, %1
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tail call void @llvm.dbg.value(metadata i32 %shl, metadata !18, metadata !DIExpression()), !dbg !20
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tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"(), !srcloc !25
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%2 = load i32, i32* @sc
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%shl2 = shl i32 %shl, %2
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tail call void @llvm.dbg.value(metadata i32 %shl2, metadata !18, metadata !DIExpression()), !dbg !20
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store i32 %shl2, i32* @var
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ret i32 %shl2
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!10, !11, !12}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "var", scope: !2, file: !3, line: 10, type: !9, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "bar.c", directory: ".")
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!4 = !{}
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!5 = !{!0, !6}
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!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
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!7 = distinct !DIGlobalVariable(name: "sc", scope: !2, file: !3, line: 11, type: !8, isLocal: false, isDefinition: true)
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!8 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !{i32 2, !"Dwarf Version", i32 4}
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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!12 = !{i32 1, !"wchar_size", i32 4}
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!14 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 12, type: !15, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !2, retainedNodes: !17)
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!15 = !DISubroutineType(types: !16)
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!16 = !{!9}
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!17 = !{!18}
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!18 = !DILocalVariable(name: "bazinga", scope: !14, file: !3, line: 13, type: !9)
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!20 = !DILocation(line: 13, column: 7, scope: !14)
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!25 = !{i32 -2147471481}
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