1; RUN: opt -S -asan -enable-new-pm=0 %s | FileCheck %s 2; RUN: opt -S -passes=asan-function-pipeline %s | FileCheck %s 3 4; The IR of this testcase is generated from the following C code: 5; void bar (int); 6; 7; void foo() { 8; __block int x; 9; bar(x); 10; } 11; by compiling it with 'clang -emit-llvm -g -S' and then by manually 12; adding the sanitize_address attribute to the @foo() function (so 13; that ASAN accepts to instrument the function in the above opt run). 14 15; Check that the location of the ASAN instrumented __block variable is 16; correct. 17; CHECK: !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 32, DW_OP_plus_uconst, 8, DW_OP_deref, DW_OP_plus_uconst, 24) 18 19target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 20 21%struct.__block_byref_x = type { i8*, %struct.__block_byref_x*, i32, i32, i32 } 22 23; Function Attrs: nounwind ssp uwtable 24define void @foo() #0 !dbg !4 { 25entry: 26 %x = alloca %struct.__block_byref_x, align 8 27 call void @llvm.dbg.declare(metadata %struct.__block_byref_x* %x, metadata !12, metadata !22), !dbg !23 28 %byref.isa = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 0, !dbg !24 29 store i8* null, i8** %byref.isa, !dbg !24 30 %byref.forwarding = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 1, !dbg !24 31 store %struct.__block_byref_x* %x, %struct.__block_byref_x** %byref.forwarding, !dbg !24 32 %byref.flags = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 2, !dbg !24 33 store i32 0, i32* %byref.flags, !dbg !24 34 %byref.size = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 3, !dbg !24 35 store i32 32, i32* %byref.size, !dbg !24 36 %forwarding = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %x, i32 0, i32 1, !dbg !25 37 %0 = load %struct.__block_byref_x*, %struct.__block_byref_x** %forwarding, !dbg !25 38 %x1 = getelementptr inbounds %struct.__block_byref_x, %struct.__block_byref_x* %0, i32 0, i32 4, !dbg !25 39 %1 = load i32, i32* %x1, align 4, !dbg !25 40 call void @bar(i32 %1), !dbg !25 41 %2 = bitcast %struct.__block_byref_x* %x to i8*, !dbg !26 42 call void @_Block_object_dispose(i8* %2, i32 8) #3, !dbg !26 43 ret void, !dbg !26 44} 45 46; Function Attrs: nounwind readnone 47declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 48 49declare void @bar(i32) #2 50 51declare void @_Block_object_dispose(i8*, i32) 52 53attributes #0 = { nounwind ssp uwtable sanitize_address "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 54attributes #1 = { nounwind readnone } 55attributes #2 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 56attributes #3 = { nounwind } 57 58!llvm.dbg.cu = !{!0} 59!llvm.module.flags = !{!8, !9, !10} 60!llvm.ident = !{!11} 61 62!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) 63!1 = !DIFile(filename: "block.c", directory: "/tmp") 64!2 = !{} 65!4 = distinct !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, retainedNodes: !2) 66!5 = !DIFile(filename: "block.c", directory: "/tmp") 67!6 = !DISubroutineType(types: !7) 68!7 = !{null} 69!8 = !{i32 2, !"Dwarf Version", i32 2} 70!9 = !{i32 2, !"Debug Info Version", i32 3} 71!10 = !{i32 1, !"PIC Level", i32 2} 72!11 = !{!"clang version 3.6.0 (trunk 223120) (llvm/trunk 223119)"} 73!12 = !DILocalVariable(name: "x", line: 4, scope: !4, file: !5, type: !13) 74!13 = !DICompositeType(tag: DW_TAG_structure_type, size: 224, file: !1, scope: !5, elements: !14) 75!14 = !{!15, !17, !18, !20, !21} 76!15 = !DIDerivedType(tag: DW_TAG_member, name: "__isa", size: 64, align: 64, file: !1, scope: !5, baseType: !16) 77!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: null) 78!17 = !DIDerivedType(tag: DW_TAG_member, name: "__forwarding", size: 64, align: 64, offset: 64, file: !1, scope: !5, baseType: !16) 79!18 = !DIDerivedType(tag: DW_TAG_member, name: "__flags", size: 32, align: 32, offset: 128, file: !1, scope: !5, baseType: !19) 80!19 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 81!20 = !DIDerivedType(tag: DW_TAG_member, name: "__size", size: 32, align: 32, offset: 160, file: !1, scope: !5, baseType: !19) 82!21 = !DIDerivedType(tag: DW_TAG_member, name: "x", size: 32, align: 32, offset: 192, file: !1, scope: !5, baseType: !19) 83!22 = !DIExpression(DW_OP_plus_uconst, 8, DW_OP_deref, DW_OP_plus_uconst, 24) 84!23 = !DILocation(line: 4, column: 15, scope: !4) 85!24 = !DILocation(line: 4, column: 3, scope: !4) 86!25 = !DILocation(line: 5, column: 3, scope: !4) 87!26 = !DILocation(line: 6, column: 1, scope: !4) 88