87 lines
5.0 KiB
LLVM
87 lines
5.0 KiB
LLVM
; RUN: opt -S -asan %s | FileCheck %s
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; The IR of this testcase is generated from the following C code:
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; void bar (int);
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;
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; void foo() {
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; __block int x;
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; bar(x);
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; }
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; by compiling it with 'clang -emit-llvm -g -S' and then by manually
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; adding the sanitize_address attribute to the @foo() function (so
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; that ASAN accepts to instrument the function in the above opt run).
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; Check that the location of the ASAN instrumented __block variable is
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; correct.
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; CHECK: !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 32, DW_OP_plus_uconst, 8, DW_OP_deref, DW_OP_plus_uconst, 24)
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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%struct.__block_byref_x = type { i8*, %struct.__block_byref_x*, i32, i32, i32 }
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; Function Attrs: nounwind ssp uwtable
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define void @foo() #0 !dbg !4 {
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entry:
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%x = alloca %struct.__block_byref_x, align 8
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call void @llvm.dbg.declare(metadata %struct.__block_byref_x* %x, metadata !12, metadata !22), !dbg !23
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%byref.isa = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 0, !dbg !24
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store i8* null, i8** %byref.isa, !dbg !24
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%byref.forwarding = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 1, !dbg !24
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store %struct.__block_byref_x* %x, %struct.__block_byref_x** %byref.forwarding, !dbg !24
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%byref.flags = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 2, !dbg !24
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store i32 0, i32* %byref.flags, !dbg !24
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%byref.size = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 3, !dbg !24
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store i32 32, i32* %byref.size, !dbg !24
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%forwarding = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 1, !dbg !25
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%0 = load %struct.__block_byref_x*, %struct.__block_byref_x** %forwarding, !dbg !25
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%x1 = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %0, i32 0, i32 4, !dbg !25
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%1 = load i32, i32* %x1, align 4, !dbg !25
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call void @bar(i32 %1), !dbg !25
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%2 = bitcast %struct.__block_byref_x* %x to i8*, !dbg !26
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call void @_Block_object_dispose(i8* %2, i32 8) #3, !dbg !26
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ret void, !dbg !26
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @bar(i32) #2
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declare void @_Block_object_dispose(i8*, i32)
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attributes #0 = { nounwind ssp uwtable sanitize_address "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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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attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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 #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9, !10}
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!llvm.ident = !{!11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 (trunk 223120) (llvm/trunk 223119)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "block.c", directory: "/tmp")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2)
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!5 = !DIFile(filename: "block.c", directory: "/tmp")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null}
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!8 = !{i32 2, !"Dwarf Version", i32 2}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{i32 1, !"PIC Level", i32 2}
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!11 = !{!"clang version 3.6.0 (trunk 223120) (llvm/trunk 223119)"}
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!12 = !DILocalVariable(name: "x", line: 4, scope: !4, file: !5, type: !13)
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!13 = !DICompositeType(tag: DW_TAG_structure_type, size: 224, flags: DIFlagBlockByrefStruct, file: !1, scope: !5, elements: !14)
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!14 = !{!15, !17, !18, !20, !21}
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "__isa", size: 64, align: 64, file: !1, scope: !5, baseType: !16)
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!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: null)
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "__forwarding", size: 64, align: 64, offset: 64, file: !1, scope: !5, baseType: !16)
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!18 = !DIDerivedType(tag: DW_TAG_member, name: "__flags", size: 32, align: 32, offset: 128, file: !1, scope: !5, baseType: !19)
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!19 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!20 = !DIDerivedType(tag: DW_TAG_member, name: "__size", size: 32, align: 32, offset: 160, file: !1, scope: !5, baseType: !19)
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!21 = !DIDerivedType(tag: DW_TAG_member, name: "x", size: 32, align: 32, offset: 192, file: !1, scope: !5, baseType: !19)
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!22 = !DIExpression(DW_OP_plus_uconst, 8, DW_OP_deref, DW_OP_plus_uconst, 24)
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!23 = !DILocation(line: 4, column: 15, scope: !4)
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!24 = !DILocation(line: 4, column: 3, scope: !4)
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!25 = !DILocation(line: 5, column: 3, scope: !4)
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!26 = !DILocation(line: 6, column: 1, scope: !4)
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