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cbfbb3ee4c
Add a verifier check that `DILocalVariable`s of tag
`DW_TAG_arg_variable` always have a non-zero 'arg:' field, and those of
tag `DW_TAG_auto_variable` always have a zero 'arg:' field. These are
the only configurations that are properly understood by the backend.
(Also, fix the bad examples in LangRef and test/Assembler, and fix the
bug in Kaleidoscope Ch8.)
A large number of testcases seem to have bitrotted their way forward
from some ancient version of the debug info hierarchy that didn't have
`arg:` parameters. If you have out-of-tree testcases that start failing
in the verifier and you don't care enough to get the `arg:` right, you
may have some luck just calling:
sed -e 's/, arg: 0/, arg: 1/'
or some such, but I hand-updated the ones in tree.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243183 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
1.1 KiB
LLVM
23 lines
1.1 KiB
LLVM
; RUN: llc -O0 < %s -o /dev/null
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; llc should not crash on this optimized out debug info.
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; PR6588
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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define void @foo() {
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entry:
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call void @llvm.dbg.declare(metadata i32* undef, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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ret void
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}
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!0 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "sy", line: 890, arg: 1, scope: !1, file: !2, type: !7)
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!1 = !DISubprogram(name: "foo", linkageName: "foo", line: 892, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !8, scope: !3, type: !4)
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!2 = !DIFile(filename: "qpainter.h", directory: "QtGui")
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!3 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang 1.1", isOptimized: true, emissionKind: 0, file: !9, enums: !10, retainedTypes: !10)
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!4 = !DISubroutineType(types: !6)
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!5 = !DIFile(filename: "splineeditor.cpp", directory: "src")
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!6 = !{null}
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !DIFile(filename: "qpainter.h", directory: "QtGui")
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!9 = !DIFile(filename: "splineeditor.cpp", directory: "src")
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!10 = !{i32 0}
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