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https://github.com/c64scene-ar/llvm-6502.git
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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
58 lines
3.4 KiB
LLVM
58 lines
3.4 KiB
LLVM
; RUN: opt -mem2reg < %s | llvm-dis | grep ".dbg " | count 7
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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declare void @foo(i32, i64, i8*)
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define void @baz(i32 %a) nounwind ssp {
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entry:
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%x_addr.i = alloca i32 ; <i32*> [#uses=2]
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%y_addr.i = alloca i64 ; <i64*> [#uses=2]
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%z_addr.i = alloca i8* ; <i8**> [#uses=2]
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%a_addr = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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call void @llvm.dbg.declare(metadata i32* %a_addr, metadata !0, metadata !DIExpression()), !dbg !7
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store i32 %a, i32* %a_addr
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%0 = load i32, i32* %a_addr, align 4, !dbg !8 ; <i32> [#uses=1]
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call void @llvm.dbg.declare(metadata i32* %x_addr.i, metadata !9, metadata !DIExpression()) nounwind, !dbg !15
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store i32 %0, i32* %x_addr.i
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call void @llvm.dbg.declare(metadata i64* %y_addr.i, metadata !16, metadata !DIExpression()) nounwind, !dbg !15
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store i64 55, i64* %y_addr.i
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call void @llvm.dbg.declare(metadata i8** %z_addr.i, metadata !17, metadata !DIExpression()) nounwind, !dbg !15
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store i8* bitcast (void (i32)* @baz to i8*), i8** %z_addr.i
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%1 = load i32, i32* %x_addr.i, align 4, !dbg !18 ; <i32> [#uses=1]
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%2 = load i64, i64* %y_addr.i, align 8, !dbg !18 ; <i64> [#uses=1]
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%3 = load i8*, i8** %z_addr.i, align 8, !dbg !18 ; <i8*> [#uses=1]
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call void @foo(i32 %1, i64 %2, i8* %3) nounwind, !dbg !18
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br label %return, !dbg !19
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return: ; preds = %entry
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ret void, !dbg !19
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}
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!llvm.dbg.cu = !{!3}
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!llvm.module.flags = !{!22}
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!0 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 8, arg: 1, scope: !1, file: !2, type: !6)
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!1 = !DISubprogram(name: "baz", linkageName: "baz", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 8, file: !20, scope: !2, type: !4, function: void (i32)* @baz)
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!2 = !DIFile(filename: "bar.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: 0, file: !20, enums: !21, retainedTypes: !21)
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!4 = !DISubroutineType(types: !5)
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!5 = !{null, !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 = !DILocation(line: 8, scope: !1)
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!8 = !DILocation(line: 9, scope: !1)
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!9 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "x", line: 4, arg: 1, scope: !10, file: !2, type: !6)
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!10 = !DISubprogram(name: "bar", linkageName: "bar", line: 4, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 4, file: !20, scope: !2, type: !11)
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!11 = !DISubroutineType(types: !12)
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!12 = !{null, !6, !13, !14}
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!13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !20, scope: !2, baseType: null)
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!15 = !DILocation(line: 4, scope: !10, inlinedAt: !8)
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!16 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "y", line: 4, arg: 2, scope: !10, file: !2, type: !13)
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!17 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "z", line: 4, arg: 3, scope: !10, file: !2, type: !14)
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!18 = !DILocation(line: 5, scope: !10, inlinedAt: !8)
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!19 = !DILocation(line: 10, scope: !1)
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!20 = !DIFile(filename: "bar.c", directory: "/tmp/")
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!21 = !{}
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!22 = !{i32 1, !"Debug Info Version", i32 3}
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