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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
31 lines
1.3 KiB
LLVM
31 lines
1.3 KiB
LLVM
; RUN: llc -mtriple armv7-apple-darwin < %s | FileCheck %s
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; Test that we don't pollute the start of the file with debug sections.
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; This is particularly important on ARM MachO as a change in section order can
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; cause a change the relaxation of the instructions used.
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; CHECK: .section __TEXT,__text,regular,pure_instructions
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; CHECK-NEXT: .syntax unified
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; CHECK-NEXT: .globl _f
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; CHECK-NEXT: .align 2
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; CHECK-NEXT: _f: @ @f
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; CHECK: .section __DWARF,__debug_str,regular,debug
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define void @f() {
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ret void, !dbg !9
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "foo", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "/foo/test.c", directory: "/foo")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, function: void ()* @f, variables: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null}
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !DILocation(line: 1, column: 15, scope: !4)
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