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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
74 lines
3.5 KiB
LLVM
74 lines
3.5 KiB
LLVM
; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s
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; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Check origin instrumentation of stores.
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; Check that debug info for origin propagation code is set correctly.
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; Function Attrs: nounwind
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define void @Store(i32* nocapture %p, i32 %x) #0 {
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entry:
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tail call void @llvm.dbg.value(metadata i32* %p, i64 0, metadata !11, metadata !DIExpression()), !dbg !16
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tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !12, metadata !DIExpression()), !dbg !16
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store i32 %x, i32* %p, align 4, !dbg !17, !tbaa !18
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ret void, !dbg !22
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind sanitize_memory "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!13, !14}
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!llvm.ident = !{!15}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (204220)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "Store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, function: void (i32*, i32)* @Store, variables: !10)
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!5 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8, !9}
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{!11, !12}
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!11 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8)
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!12 = !DILocalVariable(name: "x", line: 1, arg: 2, scope: !4, file: !5, type: !9)
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{i32 1, !"Debug Info Version", i32 3}
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!15 = !{!"clang version 3.5.0 (204220)"}
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!16 = !DILocation(line: 1, scope: !4)
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!17 = !DILocation(line: 2, scope: !4)
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!18 = !{!19, !19, i64 0}
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!19 = !{!"int", !20, i64 0}
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!20 = !{!"omnipotent char", !21, i64 0}
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!21 = !{!"Simple C/C++ TBAA"}
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!22 = !DILocation(line: 3, scope: !4)
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; CHECK-LABEL: @Store
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; CHECK: load {{.*}} @__msan_param_tls
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; CHECK: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK: store {{.*}}!dbg ![[DBG:[01-9]+]]
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; CHECK: icmp
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; CHECK: br i1
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; CHECK: <label>
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; Origin tracking level 1: simply store the origin value
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; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]],{{.*}}!dbg !{{.*}}[[DBG]]
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; Origin tracking level 2: pass origin value through __msan_chain_origin and store the result.
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; CHECK-ORIGINS2: [[ORIGIN2:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]])
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; CHECK-ORIGINS2: store i32 {{.*}}[[ORIGIN2]],{{.*}}!dbg !{{.*}}[[DBG]]
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; CHECK: br label{{.*}}!dbg !{{.*}}[[DBG]]
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; CHECK: <label>
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; CHECK: store{{.*}}!dbg !{{.*}}[[DBG]]
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; CHECK: ret void
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