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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
16 lines
465 B
LLVM
16 lines
465 B
LLVM
; RUN: llc < %s
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; rdar://7759395
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%0 = type { i32, i32 }
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define void @t(%0*, i32, i32, i32, i32) nounwind {
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tail call void @llvm.dbg.value(metadata %0* %0, i64 0, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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unreachable
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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; !0 should conform to the format of DIVariable.
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!0 = !DILocalVariable(name: "a", arg: 1, scope: !1)
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!1 = distinct !DISubprogram()
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