forked from OSchip/llvm-project
70 lines
2.8 KiB
LLVM
70 lines
2.8 KiB
LLVM
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; RUN: opt -S -lcssa < %s | FileCheck %s
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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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; Reproducer for PR39019.
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;
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; Verify that the llvm.dbg.value in the %for.cond.cleanup2 block is rewritten
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; to use the PHI node for %add that is created by LCSSA.
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; CHECK-LABEL: for.cond.cleanup2:
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; CHECK-NEXT: [[PN:%[^ ]*]] = phi i32 [ %add.lcssa, %for.cond.cleanup1 ]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[PN]], metadata [[VAR:![0-9]+]], metadata !DIExpression())
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; CHECK-NEXT: call void @bar(i32 [[PN]])
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; CHECK-LABEL: for.body:
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; CHECK: %add = add nsw i32 0, 2
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; CHECK: call void @llvm.dbg.value(metadata i32 %add, metadata [[VAR]], metadata !DIExpression())
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; CHECK: [[VAR]] = !DILocalVariable(name: "sum",
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; Function Attrs: nounwind
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define void @foo() #0 !dbg !6 {
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entry:
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br label %for.cond.preheader, !dbg !12
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for.cond.preheader: ; preds = %for.cond.cleanup1, %entry
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br label %for.body, !dbg !12
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for.cond.cleanup2: ; preds = %for.cond.cleanup1
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call void @llvm.dbg.value(metadata i32 %add, metadata !9, metadata !DIExpression()), !dbg !12
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tail call void @bar(i32 %add) #0, !dbg !12
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ret void, !dbg !12
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for.cond.cleanup1: ; preds = %for.body
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br i1 false, label %for.cond.preheader, label %for.cond.cleanup2, !dbg !12
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for.body: ; preds = %for.body, %for.cond.preheader
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%add = add nsw i32 0, 2, !dbg !12
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call void @llvm.dbg.value(metadata i32 %add, metadata !9, metadata !DIExpression()), !dbg !12
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br i1 false, label %for.body, label %for.cond.cleanup1, !dbg !12
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}
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; Function Attrs: nounwind
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declare void @bar(i32) #0
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone speculatable }
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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 8.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, nameTableKind: None)
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!1 = !DIFile(filename: "foo.c", directory: "/")
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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 8.0.0"}
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!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 10, type: !7, isLocal: false, isDefinition: true, scopeLine: 10, isOptimized: true, unit: !0, retainedNodes: !8)
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!7 = !DISubroutineType(types: !2)
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!8 = !{!9}
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!9 = !DILocalVariable(name: "sum", scope: !10, file: !1, line: 11, type: !11)
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!10 = !DILexicalBlockFile(scope: !6, file: !1, discriminator: 0)
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !DILocation(line: 0, scope: !10)
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