2017-07-20 05:45:21 +08:00
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;RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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2017-07-20 03:36:40 +08:00
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;
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; LexicalScope objects were not cleared when a nodebug function is handled in
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; LiveDebugValues. This may lead to an assertion in the constructor for LexicalScope,
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; triggered by LiveDebugValues when another (debug) function is handled later.
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;
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; This minimal example does not leave much to check for, so we just make sure we get
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; reasonable output, preserving function labels and a DBG_VALUE comment.
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;
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; CHECK-LABEL: foo:
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; CHECK-NEXT: Lfunc_begin0:
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; CHECK: Lfunc_end0:
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; CHECK-LABEL: bar:
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; CHECK-NEXT: Lfunc_begin1:
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; CHECK: #DEBUG_VALUE: foo:x <-
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; CHECK: Lfunc_end1:
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define i32 @foo() {
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entry:
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ret i32 0
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}
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define i32 @bar(i32 %x) !dbg !50 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !41, metadata !43), !dbg !52
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%tobool.i = icmp eq i32 %x, 0
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br i1 %tobool.i, label %foo.exit, label %if.then.i
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if.then.i:
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br label %foo.exit
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foo.exit:
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%x.addr.0.i = phi i32 [ 1, %if.then.i ], [ 0, %entry ]
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ret i32 %x.addr.0.i
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!0, !3}
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!llvm.ident = !{!5, !5}
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!llvm.module.flags = !{!6, !7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "foo.cpp", directory: "c:\temp")
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!2 = !{}
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!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2)
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!4 = !DIFile(filename: "bar.cpp", directory: "c:\temp")
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!5 = !{!"clang version 4.0.0"}
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!6 = !{i32 2, !"Dwarf Version", i32 4}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!36 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !37, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !40)
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!37 = !DISubroutineType(types: !38)
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!38 = !{!39, !39}
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!39 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!40 = !{!41}
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!41 = !DILocalVariable(name: "x", arg: 1, scope: !36, file: !1, line: 1, type: !39)
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!43 = !DIExpression()
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!50 = distinct !DISubprogram(name: "bar", scope: !4, file: !4, line: 3, type: !51, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !3, variables: !2)
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!51 = !DISubroutineType(types: !2)
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!52 = !DILocation(line: 1, scope: !36, inlinedAt: !53)
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!53 = distinct !DILocation(line: 5, scope: !50)
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