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https://github.com/RPCS3/llvm-mirror.git
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67886a34d2
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
82 lines
4.0 KiB
LLVM
82 lines
4.0 KiB
LLVM
; RUN: opt -S -loop-rotate < %s | FileCheck %s
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;CHECK-LABEL: func
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;CHECK-LABEL: entry
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;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 %a
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;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 1, metadata ![[I_VAR:[0-9]+]], metadata !DIExpression())
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;CHECK-LABEL: for.body:
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;CHECK-NEXT: [[I:%.*]] = phi i32 [ 1, %entry ], [ %inc, %for.body ]
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;CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 [[I]], metadata ![[I_VAR]], metadata !DIExpression())
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; CHECK: ![[I_VAR]] = !DILocalVariable(name: "i",{{.*}})
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; Function Attrs: noinline nounwind
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define void @func(i32 %a) local_unnamed_addr #0 !dbg !6 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %a, metadata !10, metadata !11), !dbg !12
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tail call void @llvm.dbg.value(metadata i32 1, metadata !13, metadata !11), !dbg !15
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br label %for.cond, !dbg !16
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for.cond: ; preds = %for.body, %entry
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%i.0 = phi i32 [ 1, %entry ], [ %inc, %for.body ]
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tail call void @llvm.dbg.value(metadata i32 %i.0, metadata !13, metadata !11), !dbg !15
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%cmp = icmp slt i32 %i.0, 10, !dbg !17
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br i1 %cmp, label %for.body, label %for.end, !dbg !20
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for.body: ; preds = %for.cond
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%add = add nsw i32 %i.0, %a, !dbg !22
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%call = tail call i32 @func2(i32 %i.0, i32 %add) #3, !dbg !24
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%inc = add nsw i32 %i.0, 1, !dbg !25
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tail call void @llvm.dbg.value(metadata i32 %inc, metadata !13, metadata !11), !dbg !15
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br label %for.cond, !dbg !27, !llvm.loop !28
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for.end: ; preds = %for.cond
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ret void, !dbg !31
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}
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declare i32 @func2(i32, i32) local_unnamed_addr
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #0 = { noinline nounwind }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (http://llvm.org/git/clang.git 0f3ed908c1f13f83da4b240f7595eb8d05e0a754) (http://llvm.org/git/llvm.git 8e270f5a6b8ceb0f3ac3ef1ffb83c5e29b44ae68)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "debug-phi.c", directory: "/work/projects/src/tests/debug")
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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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!5 = !{!"clang version 5.0.0 (http://llvm.org/git/clang.git 0f3ed908c1f13f83da4b240f7595eb8d05e0a754) (http://llvm.org/git/llvm.git 8e270f5a6b8ceb0f3ac3ef1ffb83c5e29b44ae68)"}
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!6 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !1, line: 2, type: !9)
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!11 = !DIExpression()
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!12 = !DILocation(line: 2, column: 15, scope: !6)
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!13 = !DILocalVariable(name: "i", scope: !14, file: !1, line: 3, type: !9)
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!14 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 3)
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!15 = !DILocation(line: 3, column: 11, scope: !14)
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!16 = !DILocation(line: 3, column: 7, scope: !14)
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!17 = !DILocation(line: 3, column: 20, scope: !18)
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!18 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 1)
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!19 = distinct !DILexicalBlock(scope: !14, file: !1, line: 3, column: 3)
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!20 = !DILocation(line: 3, column: 3, scope: !21)
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!21 = !DILexicalBlockFile(scope: !14, file: !1, discriminator: 1)
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!22 = !DILocation(line: 4, column: 15, scope: !23)
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!23 = distinct !DILexicalBlock(scope: !19, file: !1, line: 3, column: 31)
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!24 = !DILocation(line: 4, column: 5, scope: !23)
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!25 = !DILocation(line: 3, column: 27, scope: !26)
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!26 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 2)
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!27 = !DILocation(line: 3, column: 3, scope: !26)
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!28 = distinct !{!28, !29, !30}
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!29 = !DILocation(line: 3, column: 3, scope: !14)
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!30 = !DILocation(line: 5, column: 3, scope: !14)
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!31 = !DILocation(line: 6, column: 1, scope: !6)
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