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c61bc48acb
Since r241097, `DIBuilder` has only created distinct `DICompileUnit`s.
The backend is liable to start relying on that (if it hasn't already),
so make uniquable `DICompileUnit`s illegal and automatically upgrade old
bitcode. This is a nice cleanup, since we can remove an unnecessary
`DenseSet` (and the associated uniquing info) from `LLVMContextImpl`.
Almost all the testcases were updated with this script:
git grep -e '= !DICompileUnit' -l -- test |
grep -v test/Bitcode |
xargs sed -i '' -e 's,= !DICompileUnit,= distinct !DICompileUnit,'
I imagine something similar should work for out-of-tree testcases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243885 91177308-0d34-0410-b5e6-96231b3b80d8
74 lines
3.2 KiB
LLVM
74 lines
3.2 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; Built from source:
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; $ clang++ a.cpp b.cpp -g -c -emit-llvm
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; $ llvm-link a.bc b.bc -o ab.bc
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; $ cat a.cpp
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; # 1 "func.h"
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; inline int func(int i) {
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; return i * 2;
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; }
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; int (*x)(int) = &func;
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; $ cat b.cpp
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; # 1 "func.h"
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; inline int func(int i) {
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; return i * 2;
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; }
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; int (*y)(int) = &func;
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "func"
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; CHECK: DW_TAG_compile_unit
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; CHECK-NOT: DW_TAG_subprogram
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@x = global i32 (i32)* @_Z4funci, align 8
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@y = global i32 (i32)* @_Z4funci, align 8
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; Function Attrs: inlinehint nounwind uwtable
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define linkonce_odr i32 @_Z4funci(i32 %i) #0 {
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%1 = alloca i32, align 4
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store i32 %i, i32* %1, align 4
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call void @llvm.dbg.declare(metadata i32* %1, metadata !20, metadata !DIExpression()), !dbg !21
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%2 = load i32, i32* %1, align 4, !dbg !22
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%3 = mul nsw i32 %2, 2, !dbg !22
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ret i32 %3, !dbg !22
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { inlinehint nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0, !13}
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!llvm.module.flags = !{!17, !18}
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!llvm.ident = !{!19, !19}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !10, imports: !2)
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!1 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4}
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!4 = !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !5, scope: !6, type: !7, function: i32 (i32)* @_Z4funci, variables: !2)
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!5 = !DIFile(filename: "func.h", directory: "/tmp/dbginfo")
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!6 = !DIFile(filename: "func.h", directory: "/tmp/dbginfo")
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !9}
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{!11}
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!11 = !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !12, variable: i32 (i32)** @x)
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!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !7)
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!13 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !14, enums: !2, retainedTypes: !2, subprograms: !3, globals: !15, imports: !2)
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!14 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
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!15 = !{!16}
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!16 = !DIGlobalVariable(name: "y", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !12, variable: i32 (i32)** @y)
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!17 = !{i32 2, !"Dwarf Version", i32 4}
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!18 = !{i32 1, !"Debug Info Version", i32 3}
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!19 = !{!"clang version 3.5.0 "}
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!20 = !DILocalVariable(name: "i", line: 1, arg: 1, scope: !4, file: !6, type: !9)
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!21 = !DILocation(line: 1, scope: !4)
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!22 = !DILocation(line: 2, scope: !4)
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