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176 lines
6.7 KiB
176 lines
6.7 KiB
; RUN: llc -filetype=obj -O0 < %s
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; Test that we handle DBG_VALUEs in a register without crashing.
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;
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; Generated from clang with -fsanitize=address:
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; struct A {
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; A();
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; A(const A&);
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; };
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;
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; A func(int) {
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; A a;
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; return a;
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; }
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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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%struct.A = type { i8 }
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@__asan_mapping_offset = linkonce_odr constant i64 2147450880
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@__asan_mapping_scale = linkonce_odr constant i64 3
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@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 1, void ()* @asan.module_ctor }]
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@__asan_gen_ = private unnamed_addr constant [16 x i8] c"1 32 4 5 .addr \00", align 1
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; Function Attrs: sanitize_address uwtable
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define void @_Z4funci(%struct.A* noalias sret %agg.result, i32) #0 "stack-protector-buffer-size"="1" !dbg !4 {
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entry:
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%MyAlloca = alloca [96 x i8], align 32
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%1 = ptrtoint [96 x i8]* %MyAlloca to i64
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%2 = add i64 %1, 32
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%3 = inttoptr i64 %2 to i32*
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%4 = inttoptr i64 %1 to i64*
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store i64 1102416563, i64* %4
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%5 = add i64 %1, 8
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%6 = inttoptr i64 %5 to i64*
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store i64 ptrtoint ([16 x i8]* @__asan_gen_ to i64), i64* %6
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%7 = add i64 %1, 16
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%8 = inttoptr i64 %7 to i64*
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store i64 ptrtoint (void (%struct.A*, i32)* @_Z4funci to i64), i64* %8
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%9 = lshr i64 %1, 3
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%10 = add i64 %9, 2147450880
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%11 = inttoptr i64 %10 to i32*
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store i32 -235802127, i32* %11
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%12 = add i64 %10, 4
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%13 = inttoptr i64 %12 to i32*
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store i32 -185273340, i32* %13
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%14 = add i64 %10, 8
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%15 = inttoptr i64 %14 to i32*
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store i32 -202116109, i32* %15
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%16 = ptrtoint i32* %3 to i64
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%17 = lshr i64 %16, 3
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%18 = add i64 %17, 2147450880
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%19 = inttoptr i64 %18 to i8*
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%20 = load i8, i8* %19
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%21 = icmp ne i8 %20, 0
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call void @llvm.dbg.declare(metadata i32* %3, metadata !23, metadata !28), !dbg !DILocation(scope: !4)
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br i1 %21, label %22, label %28
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; <label>:22 ; preds = %entry
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%23 = and i64 %16, 7
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%24 = add i64 %23, 3
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%25 = trunc i64 %24 to i8
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%26 = icmp sge i8 %25, %20
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br i1 %26, label %27, label %28
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; <label>:27 ; preds = %22
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call void @__asan_report_store4(i64 %16)
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call void asm sideeffect "", ""()
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unreachable
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; <label>:28 ; preds = %22, %entry
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store i32 %0, i32* %3, align 4
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call void @llvm.dbg.declare(metadata %struct.A* %agg.result, metadata !24, metadata !DIExpression(DW_OP_deref)), !dbg !25
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call void @_ZN1AC1Ev(%struct.A* %agg.result), !dbg !25
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store i64 1172321806, i64* %4, !dbg !26
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%29 = inttoptr i64 %10 to i32*, !dbg !26
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store i32 0, i32* %29, !dbg !26
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%30 = add i64 %10, 4, !dbg !26
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%31 = inttoptr i64 %30 to i32*, !dbg !26
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store i32 0, i32* %31, !dbg !26
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%32 = add i64 %10, 8, !dbg !26
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%33 = inttoptr i64 %32 to i32*, !dbg !26
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store i32 0, i32* %33, !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 @_ZN1AC1Ev(%struct.A*) #2
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define internal void @asan.module_ctor() "stack-protector-buffer-size"="1" {
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call void @__asan_init_v3()
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%1 = load volatile i64, i64* @__asan_mapping_offset
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%2 = load volatile i64, i64* @__asan_mapping_scale
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ret void
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}
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declare void @__asan_init_v3()
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declare void @__asan_report_load1(i64)
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declare void @__asan_report_load2(i64)
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declare void @__asan_report_load4(i64)
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declare void @__asan_report_load8(i64)
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declare void @__asan_report_load16(i64)
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declare void @__asan_report_store1(i64)
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declare void @__asan_report_store2(i64)
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declare void @__asan_report_store4(i64)
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declare void @__asan_report_store8(i64)
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declare void @__asan_report_store16(i64)
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declare void @__asan_report_load_n(i64, i64)
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declare void @__asan_report_store_n(i64, i64)
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declare void @__asan_handle_no_return()
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declare i64 @__asan_stack_malloc(i64, i64)
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declare void @__asan_stack_free(i64, i64, i64)
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declare void @__asan_poison_stack_memory(i64, i64)
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declare void @__asan_unpoison_stack_memory(i64, i64)
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declare void @__asan_before_dynamic_init(i64)
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declare void @__asan_after_dynamic_init()
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declare void @__asan_register_globals(i64, i64)
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declare void @__asan_unregister_globals(i64, i64)
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attributes #0 = { sanitize_address uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "ssp-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"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "ssp-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!22, !27}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "crash.cpp", directory: "/tmp")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 6, file: !1, scope: !5, type: !6, variables: !2)
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!5 = !DIFile(filename: "crash.cpp", directory: "/tmp")
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8, !21}
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!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 8, align: 8, file: !1, elements: !9)
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!9 = !{!10, !15}
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!10 = !DISubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !8, type: !11)
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!11 = !DISubroutineType(types: !12)
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!12 = !{null, !13}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
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!15 = !DISubprogram(name: "A", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !8, type: !16)
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!16 = !DISubroutineType(types: !17)
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!17 = !{null, !13, !18}
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!18 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !19)
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!19 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
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!21 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!22 = !{i32 2, !"Dwarf Version", i32 3}
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!23 = !DILocalVariable(name: "", line: 6, arg: 1, scope: !4, file: !5, type: !21)
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!24 = !DILocalVariable(name: "a", line: 7, scope: !4, file: !5, type: !8)
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!25 = !DILocation(line: 7, scope: !4)
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!26 = !DILocation(line: 8, scope: !4)
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!27 = !{i32 1, !"Debug Info Version", i32 3}
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!28 = !DIExpression(DW_OP_deref)
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