forked from OSchip/llvm-project
54 lines
2.4 KiB
LLVM
54 lines
2.4 KiB
LLVM
; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S < %s | FileCheck %s
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; Verify that we don't crash due an invalid !dbg location on the hoisted llvm.dbg.value
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define i64 @caller(i64* %ptr, i64 %flag) !dbg !10 {
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init:
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%v9 = icmp eq i64 %flag, 0
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br i1 %v9, label %a, label %b
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; CHECK: %vala = load i64, i64* %ptr
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %vala, metadata [[MD:![0-9]*]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %vala, metadata [[MD]]
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; CHECK-NEXT: %valbmasked = and i64 %vala, 1
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a: ; preds = %init
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%vala = load i64, i64* %ptr, align 8
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call void @llvm.dbg.value(metadata i64 %vala, metadata !8, metadata !DIExpression()), !dbg !12
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br label %test.exit
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b: ; preds = %init
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%valb = load i64, i64* %ptr, align 8
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call void @llvm.dbg.value(metadata i64 %valb, metadata !8, metadata !DIExpression()), !dbg !13
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%valbmasked = and i64 %valb, 1
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br label %test.exit
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test.exit: ; preds = %a, %b
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%retv = phi i64 [ %vala, %a ], [ %valbmasked, %b ]
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ret i64 %retv
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}
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; CHECK: [[MD]] = !DILocalVariable(name: "var"
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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attributes #0 = { nounwind readnone speculatable }
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!llvm.module.flags = !{!0}
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!llvm.dbg.cu = !{!1}
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!0 = !{i32 2, !"Debug Info Version", i32 3}
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!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !3)
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!2 = !DIFile(filename: "optbug", directory: "")
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!3 = !{}
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!4 = distinct !DISubprogram(name: "callee", scope: !2, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !1, retainedNodes: !7)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null}
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!7 = !{!8}
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!8 = !DILocalVariable(name: "var", scope: !4, file: !2, type: !9)
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!9 = !DIBasicType(name: "var_t", size: 64, encoding: DW_ATE_unsigned)
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!10 = distinct !DISubprogram(name: "caller", scope: !2, file: !2, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: false, unit: !1, retainedNodes: !3)
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!11 = distinct !DILocation(line: 6, scope: !10)
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!12 = !DILocation(line: 2, scope: !4, inlinedAt: !11)
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!13 = !DILocation(line: 3, scope: !4, inlinedAt: !11)
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