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0c1aee0b16
As a follow-up to r246098, require `DISubprogram` definitions
(`isDefinition: true`) to be 'distinct'. Specifically, add an assembler
check, a verifier check, and bitcode upgrading logic to combat testcase
bitrot after the `DIBuilder` change.
While working on the testcases, I realized that
test/Linker/subprogram-linkonce-weak-odr.ll isn't relevant anymore. Its
purpose was to check for a corner case in PR22792 where two subprogram
definitions match exactly and share the same metadata node. The new
verifier check, requiring that subprogram definitions are 'distinct',
precludes that possibility.
I updated almost all the IR with the following script:
git grep -l -E -e '= !DISubprogram\(.* isDefinition: true' |
grep -v test/Bitcode |
xargs sed -i '' -e 's/= \(!DISubprogram(.*, isDefinition: true\)/= distinct \1/'
Likely some variant of would work for out-of-tree testcases.
llvm-svn: 246327
98 lines
4.6 KiB
LLVM
98 lines
4.6 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-darwin -O0 -filetype=obj -o %t < %s
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; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
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; <rdar://problem/12566646>
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%struct.foo = type { i32, [1 x i32] }
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%struct.bar = type { i32, [0 x i32] }
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define i32 @func() nounwind uwtable ssp {
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entry:
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%my_foo = alloca %struct.foo, align 4
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%my_bar = alloca %struct.bar, align 4
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call void @llvm.dbg.declare(metadata %struct.foo* %my_foo, metadata !10, metadata !DIExpression()), !dbg !19
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call void @llvm.dbg.declare(metadata %struct.bar* %my_bar, metadata !20, metadata !DIExpression()), !dbg !28
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%a = getelementptr inbounds %struct.foo, %struct.foo* %my_foo, i32 0, i32 0, !dbg !29
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store i32 3, i32* %a, align 4, !dbg !29
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%a1 = getelementptr inbounds %struct.bar, %struct.bar* %my_bar, i32 0, i32 0, !dbg !30
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store i32 5, i32* %a1, align 4, !dbg !30
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%a2 = getelementptr inbounds %struct.foo, %struct.foo* %my_foo, i32 0, i32 0, !dbg !31
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%0 = load i32, i32* %a2, align 4, !dbg !31
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%a3 = getelementptr inbounds %struct.bar, %struct.bar* %my_bar, i32 0, i32 0, !dbg !31
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%1 = load i32, i32* %a3, align 4, !dbg !31
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%add = add nsw i32 %0, %1, !dbg !31
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ret i32 %add, !dbg !31
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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; CHECK: DW_TAG_base_type
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[{{.*}}] = "int")
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; CHECK-NEXT: DW_AT_encoding [DW_FORM_data1] (DW_ATE_signed)
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; CHECK-NEXT: DW_AT_byte_size [DW_FORM_data1] (0x04)
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; int foo::b[1]:
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; CHECK: DW_TAG_structure_type
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; CHECK: DW_AT_name{{.*}}"foo"
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; CHECK: DW_TAG_member
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; CHECK: DW_TAG_member
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[{{.*}}] = "b")
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
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; int[1]:
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; CHECK: DW_TAG_array_type [{{.*}}] *
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
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; CHECK: DW_TAG_subrange_type [{{.*}}]
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
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; CHECK-NEXT: DW_AT_count [DW_FORM_data1] (0x01)
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; int bar::b[0]:
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; CHECK: DW_TAG_structure_type
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; CHECK: DW_AT_name{{.*}}"bar"
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; CHECK: DW_TAG_member
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; CHECK: DW_TAG_member
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[{{.*}}] = "b")
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
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; int[0]:
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; CHECK: DW_TAG_array_type [{{.*}}] *
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
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; CHECK: DW_TAG_subrange_type
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
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; CHECK: DW_AT_count [DW_FORM_data1] (0x00)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!33}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports: !1)
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!1 = !{}
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!3 = !{!5}
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!5 = distinct !DISubprogram(name: "func", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !6, scope: !6, type: !7, function: i32 ()* @func, variables: !1)
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!6 = !DIFile(filename: "test.c", directory: "/Volumes/Sandbox/llvm")
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!7 = !DISubroutineType(types: !8)
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!8 = !{!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 = !DILocalVariable(name: "my_foo", line: 12, scope: !11, file: !6, type: !12)
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!11 = distinct !DILexicalBlock(line: 11, column: 0, file: !6, scope: !5)
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!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 64, align: 32, file: !32, elements: !13)
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!13 = !{!14, !15}
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!14 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !32, scope: !12, baseType: !9)
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !32, scope: !12, baseType: !16)
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!16 = !DICompositeType(tag: DW_TAG_array_type, size: 32, align: 32, baseType: !9, elements: !17)
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!17 = !{!18}
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!18 = !DISubrange(count: 1)
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!19 = !DILocation(line: 12, scope: !11)
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!20 = !DILocalVariable(name: "my_bar", line: 13, scope: !11, file: !6, type: !21)
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!21 = !DICompositeType(tag: DW_TAG_structure_type, name: "bar", line: 6, size: 32, align: 32, file: !32, elements: !22)
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!22 = !{!23, !24}
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!23 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 7, size: 32, align: 32, file: !32, scope: !21, baseType: !9)
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!24 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 8, align: 32, offset: 32, file: !32, scope: !21, baseType: !25)
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!25 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !9, elements: !26)
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!26 = !{!27}
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!27 = !DISubrange(count: 0)
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!28 = !DILocation(line: 13, scope: !11)
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!29 = !DILocation(line: 15, scope: !11)
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!30 = !DILocation(line: 16, scope: !11)
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!31 = !DILocation(line: 17, scope: !11)
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!32 = !DIFile(filename: "test.c", directory: "/Volumes/Sandbox/llvm")
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!33 = !{i32 1, !"Debug Info Version", i32 3}
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