6d353348e5
Summary: Most DIExpressions are empty or very simple. When they are complex, they tend to be unique, so checking them inline is reasonable. This also avoids the need for CodeGen passes to append to the llvm.dbg.mir named md node. See also PR22780, for making DIExpression not be an MDNode. Reviewers: aprantl, dexonsmith, dblaikie Subscribers: qcolombet, javed.absar, eraman, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37075 llvm-svn: 311594
47 lines
1.8 KiB
LLVM
47 lines
1.8 KiB
LLVM
; RUN: opt < %s -mem2reg -S | FileCheck %s
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source_filename = "bugpoint-output.bc"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.12.0"
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define void @scan() #0 !dbg !12 {
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entry:
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%entry1 = alloca i8, align 8
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call void @llvm.dbg.declare(metadata i8* %entry1, metadata !18, metadata !19), !dbg !20
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store i8 0, i8* %entry1, align 8, !dbg !20
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br label %for.cond, !dbg !20
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for.cond:
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; CHECK: %[[PHI:.*]] = phi i8 [ 0, %entry ], [ %0, %for.cond ]
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%entryN = load i8, i8* %entry1, align 8, !dbg !20
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; CHECK: call void @llvm.dbg.value(metadata i8 %[[PHI]],
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; CHECK-SAME: metadata !DIExpression())
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%0 = add i8 %entryN, 1
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; CHECK: %0 = add i8 %[[PHI]], 1
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; CHECK: call void @llvm.dbg.value(metadata i8 %0,
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; CHECK-SAME: metadata !DIExpression())
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store i8 %0, i8* %entry1, align 8, !dbg !20
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br label %for.cond, !dbg !20
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { nounwind ssp uwtable }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!10, !11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "adrian", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "<stdin>", directory: "/")
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!2 = !{}
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!4 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{i32 1, !"PIC Level", i32 2}
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!12 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !13, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !15)
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!13 = !DISubroutineType(types: !14)
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!14 = !{null, !4, !4}
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!15 = !{!18}
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!18 = !DILocalVariable(name: "entry", scope: !12, file: !1, line: 6, type: !4)
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!19 = !DIExpression()
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!20 = !DILocation(line: 6, scope: !12)
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