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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
53 lines
2.7 KiB
LLVM
53 lines
2.7 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck %s
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; RUN: llc -mtriple=x86_64-apple-darwin -regalloc=basic < %s | FileCheck %s
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; Test to check separate label for inlined function argument.
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define i32 @foo(i32 %y) nounwind optsize ssp {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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%0 = tail call i32 (...) @zoo(i32 %y) nounwind, !dbg !9 ; <i32> [#uses=1]
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ret i32 %0, !dbg !9
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}
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declare i32 @zoo(...)
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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define i32 @bar(i32 %x) nounwind optsize ssp {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !7, metadata !DIExpression()), !dbg !DILocation(scope: !8)
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tail call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !0, metadata !DIExpression()) nounwind, !dbg !DILocation(scope: !1)
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%0 = tail call i32 (...) @zoo(i32 1) nounwind, !dbg !12 ; <i32> [#uses=1]
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%1 = add nsw i32 %0, %x, !dbg !13 ; <i32> [#uses=1]
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ret i32 %1, !dbg !13
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}
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!llvm.dbg.cu = !{!3}
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!llvm.module.flags = !{!20}
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!0 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "y", line: 2, arg: 1, scope: !1, file: !2, type: !6)
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!1 = !DISubprogram(name: "foo", linkageName: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 2, file: !18, scope: !2, type: !4, function: i32 (i32)* @foo, variables: !15)
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!2 = !DIFile(filename: "f.c", directory: "/tmp")
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!3 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 1, file: !18, enums: !19, retainedTypes: !19, subprograms: !17, imports: null)
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!4 = !DISubroutineType(types: !5)
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!5 = !{!6, !6}
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!6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!7 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "x", line: 6, arg: 1, scope: !8, file: !2, type: !6)
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!8 = !DISubprogram(name: "bar", linkageName: "bar", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 6, file: !18, scope: !2, type: !4, function: i32 (i32)* @bar, variables: !16)
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!9 = !DILocation(line: 3, scope: !10)
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!10 = distinct !DILexicalBlock(line: 2, column: 0, file: !18, scope: !1)
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!11 = !{i32 1}
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!12 = !DILocation(line: 3, scope: !10, inlinedAt: !13)
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!13 = !DILocation(line: 7, scope: !14)
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!14 = distinct !DILexicalBlock(line: 6, column: 0, file: !18, scope: !8)
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!15 = !{!0}
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!16 = !{!7}
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!17 = !{!1, !8}
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!18 = !DIFile(filename: "f.c", directory: "/tmp")
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!19 = !{}
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;CHECK: DEBUG_VALUE: bar:x <- E
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;CHECK: Ltmp
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;CHECK: DEBUG_VALUE: foo:y <- 1{{$}}
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!20 = !{i32 1, !"Debug Info Version", i32 3}
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