e2a2c03eef
These checks ensure that retained nodes of a DISubprogram belong to the subprogram. Tests with incorrect IR are fixed. We should not have variables of one subprogram present in retained nodes of other subprograms. Also, interface for accessing DISubprogram's retained nodes is slightly refactored. `DISubprogram::visitRetainedNodes` and `DISubprogram::forEachRetainedNode` are added to avoid repeating checks like ``` if (const auto *LV = dyn_cast<DILocalVariable>(N)) ... else if (const auto *L = dyn_cast<DILabel>(N)) ... else if (const auto *IE = dyn_cast<DIImportedEntity>(N)) ... ```
88 lines
4.7 KiB
LLVM
88 lines
4.7 KiB
LLVM
; Do setup work for all below tests: generate bitcode and combined index
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; RUN: opt -module-summary %s -o %t.bc
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; RUN: opt -module-summary %p/Inputs/thinlto_funcimport_debug.ll -o %t2.bc
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; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
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; If we import func1 and not func2 we should only link DISubprogram for func1
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; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=func1:%t.bc -S | FileCheck %s
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; CHECK: declare i32 @func2
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; CHECK: define available_externally i32 @func1
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; Ensure that each subprogram points to the correct CU.
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; CHECK: ![[CU1:[0-9]+]] = distinct !DICompileUnit(
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; CHECK: ![[CU2:[0-9]+]] = distinct !DICompileUnit(
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; CHECK: distinct !DISubprogram(name: "main", {{.*}}, unit: ![[CU1]]
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; CHECK: distinct !DISubprogram(name: "func1", {{.*}}, unit: ![[CU2]]
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; CHECK-NOT: distinct !DISubprogram(name: "func2"
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; CHECK: distinct !DISubprogram(name: "func3", {{.*}}, unit: ![[CU2]]
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; CHECK: distinct !DISubprogram(name: "func4", {{.*}}, unit: ![[CU2]]
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; ModuleID = 'dbg.o'
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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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; Function Attrs: nounwind readnone uwtable
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define i32 @func1(i32 %n) #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !9, metadata !17), !dbg !18
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tail call void @llvm.dbg.value(metadata i32 5, i64 0, metadata !10, metadata !17), !dbg !19
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%cmp = icmp sgt i32 %n, 10, !dbg !20
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%. = select i1 %cmp, i32 10, i32 5, !dbg !22
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tail call void @llvm.dbg.value(metadata i32 %., i64 0, metadata !10, metadata !17), !dbg !19
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ret i32 %., !dbg !23
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}
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; Function Attrs: nounwind readnone uwtable
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define i32 @func2(i32 %n) #0 !dbg !11 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !13, metadata !17), !dbg !24
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ret i32 %n, !dbg !25
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind readnone uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!14, !15}
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!llvm.ident = !{!16}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "dbg.c", directory: ".")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "func1", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7, !7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{!9, !10}
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!9 = !DILocalVariable(name: "n", arg: 1, scope: !4, file: !1, line: 1, type: !7)
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!10 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 2, type: !7)
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!11 = distinct !DISubprogram(name: "func2", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
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!12 = !{!13}
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!13 = !DILocalVariable(name: "n", arg: 1, scope: !11, file: !1, line: 8, type: !7)
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!14 = !{i32 2, !"Dwarf Version", i32 4}
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!15 = !{i32 2, !"Debug Info Version", i32 3}
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!16 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"}
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!17 = !DIExpression()
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!18 = !DILocation(line: 1, column: 15, scope: !4)
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!19 = !DILocation(line: 2, column: 7, scope: !4)
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!20 = !DILocation(line: 3, column: 9, scope: !21, inlinedAt: !26)
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!21 = distinct !DILexicalBlock(scope: !27, file: !1, line: 3, column: 7)
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!22 = !DILocation(line: 3, column: 7, scope: !4)
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!23 = !DILocation(line: 5, column: 3, scope: !4)
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!24 = !DILocation(line: 8, column: 15, scope: !11)
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!25 = !DILocation(line: 9, column: 3, scope: !11)
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!26 = !DILocation(line: 9, column: 3, scope: !4)
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!27 = distinct !DISubprogram(name: "func3", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !28)
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!28 = !{!29}
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!29 = !DILocalVariable(name: "n", arg: 1, scope: !27, file: !1, line: 8, type: !33)
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!30 = distinct !DISubprogram(name: "func4", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !31)
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!31 = !{!32}
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!32 = !DILocalVariable(name: "n", arg: 1, scope: !30, file: !1, line: 8, type: !7)
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!33 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", scope: !30, file: !1, line: 13, baseType: !7)
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