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1744eb89b5
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.
llvm-svn: 243183
33 lines
1.9 KiB
LLVM
33 lines
1.9 KiB
LLVM
; RUN: llc < %s
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; PR6847
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:64-n32"
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target triple = "armv4t-apple-darwin10"
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define hidden i32 @__addvsi3(i32 %a, i32 %b) nounwind {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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%0 = add nsw i32 %b, %a, !dbg !9 ; <i32> [#uses=1]
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ret i32 %0, !dbg !11
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!3}
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!llvm.module.flags = !{!15}
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!0 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "b", line: 93, arg: 2, scope: !1, file: !2, type: !6)
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!1 = !DISubprogram(name: "__addvsi3", linkageName: "__addvsi3", line: 94, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !12, scope: null, type: !4)
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!2 = !DIFile(filename: "libgcc2.c", directory: "/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc")
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!12 = !DIFile(filename: "libgcc2.c", directory: "/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc")
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!3 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build 00)", isOptimized: true, emissionKind: 0, file: !12, enums: !13, retainedTypes: !13, subprograms: !14)
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!4 = !DISubroutineType(types: !5)
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!5 = !{!6, !6, !6}
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!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "SItype", line: 152, file: !12, baseType: !8)
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!7 = !DIFile(filename: "libgcc2.h", directory: "/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc")
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DILocation(line: 95, scope: !10)
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!10 = distinct !DILexicalBlock(line: 94, column: 0, file: !12, scope: !1)
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!11 = !DILocation(line: 100, scope: !10)
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!13 = !{}
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!14 = !{!1}
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!15 = !{i32 1, !"Debug Info Version", i32 3}
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