1; RUN: llc -filetype=obj -O0 < %s 2; Test that we handle DBG_VALUEs in a register without crashing. 3; 4; Generated from clang with -fsanitize=address: 5; struct A { 6; A(); 7; A(const A&); 8; }; 9; 10; A func(int) { 11; A a; 12; return a; 13; } 14 15target 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" 16target triple = "x86_64-unknown-linux-gnu" 17 18%struct.A = type { i8 } 19 20@__asan_mapping_offset = linkonce_odr constant i64 2147450880 21@__asan_mapping_scale = linkonce_odr constant i64 3 22@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 1, void ()* @asan.module_ctor }] 23@__asan_gen_ = private unnamed_addr constant [16 x i8] c"1 32 4 5 .addr \00", align 1 24 25; Function Attrs: sanitize_address uwtable 26define void @_Z4funci(%struct.A* noalias sret %agg.result, i32) #0 "stack-protector-buffer-size"="1" { 27entry: 28 %MyAlloca = alloca [96 x i8], align 32 29 %1 = ptrtoint [96 x i8]* %MyAlloca to i64 30 %2 = add i64 %1, 32 31 %3 = inttoptr i64 %2 to i32* 32 %4 = inttoptr i64 %1 to i64* 33 store i64 1102416563, i64* %4 34 %5 = add i64 %1, 8 35 %6 = inttoptr i64 %5 to i64* 36 store i64 ptrtoint ([16 x i8]* @__asan_gen_ to i64), i64* %6 37 %7 = add i64 %1, 16 38 %8 = inttoptr i64 %7 to i64* 39 store i64 ptrtoint (void (%struct.A*, i32)* @_Z4funci to i64), i64* %8 40 %9 = lshr i64 %1, 3 41 %10 = add i64 %9, 2147450880 42 %11 = inttoptr i64 %10 to i32* 43 store i32 -235802127, i32* %11 44 %12 = add i64 %10, 4 45 %13 = inttoptr i64 %12 to i32* 46 store i32 -185273340, i32* %13 47 %14 = add i64 %10, 8 48 %15 = inttoptr i64 %14 to i32* 49 store i32 -202116109, i32* %15 50 %16 = ptrtoint i32* %3 to i64 51 %17 = lshr i64 %16, 3 52 %18 = add i64 %17, 2147450880 53 %19 = inttoptr i64 %18 to i8* 54 %20 = load i8* %19 55 %21 = icmp ne i8 %20, 0 56 call void @llvm.dbg.declare(metadata !{i32* %3}, metadata !23) 57 br i1 %21, label %22, label %28 58 59; <label>:22 ; preds = %entry 60 %23 = and i64 %16, 7 61 %24 = add i64 %23, 3 62 %25 = trunc i64 %24 to i8 63 %26 = icmp sge i8 %25, %20 64 br i1 %26, label %27, label %28 65 66; <label>:27 ; preds = %22 67 call void @__asan_report_store4(i64 %16) 68 call void asm sideeffect "", ""() 69 unreachable 70 71; <label>:28 ; preds = %22, %entry 72 store i32 %0, i32* %3, align 4 73 call void @llvm.dbg.declare(metadata !{%struct.A* %agg.result}, metadata !24), !dbg !25 74 call void @_ZN1AC1Ev(%struct.A* %agg.result), !dbg !25 75 store i64 1172321806, i64* %4, !dbg !26 76 %29 = inttoptr i64 %10 to i32*, !dbg !26 77 store i32 0, i32* %29, !dbg !26 78 %30 = add i64 %10, 4, !dbg !26 79 %31 = inttoptr i64 %30 to i32*, !dbg !26 80 store i32 0, i32* %31, !dbg !26 81 %32 = add i64 %10, 8, !dbg !26 82 %33 = inttoptr i64 %32 to i32*, !dbg !26 83 store i32 0, i32* %33, !dbg !26 84 ret void, !dbg !26 85} 86 87; Function Attrs: nounwind readnone 88declare void @llvm.dbg.declare(metadata, metadata) #1 89 90declare void @_ZN1AC1Ev(%struct.A*) #2 91 92define internal void @asan.module_ctor() "stack-protector-buffer-size"="1" { 93 call void @__asan_init_v3() 94 %1 = load volatile i64* @__asan_mapping_offset 95 %2 = load volatile i64* @__asan_mapping_scale 96 ret void 97} 98 99declare void @__asan_init_v3() 100 101declare void @__asan_report_load1(i64) 102 103declare void @__asan_report_load2(i64) 104 105declare void @__asan_report_load4(i64) 106 107declare void @__asan_report_load8(i64) 108 109declare void @__asan_report_load16(i64) 110 111declare void @__asan_report_store1(i64) 112 113declare void @__asan_report_store2(i64) 114 115declare void @__asan_report_store4(i64) 116 117declare void @__asan_report_store8(i64) 118 119declare void @__asan_report_store16(i64) 120 121declare void @__asan_report_load_n(i64, i64) 122 123declare void @__asan_report_store_n(i64, i64) 124 125declare void @__asan_handle_no_return() 126 127declare i64 @__asan_stack_malloc(i64, i64) 128 129declare void @__asan_stack_free(i64, i64, i64) 130 131declare void @__asan_poison_stack_memory(i64, i64) 132 133declare void @__asan_unpoison_stack_memory(i64, i64) 134 135declare void @__asan_before_dynamic_init(i64) 136 137declare void @__asan_after_dynamic_init() 138 139declare void @__asan_register_globals(i64, i64) 140 141declare void @__asan_unregister_globals(i64, i64) 142 143attributes #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" } 144attributes #1 = { nounwind readnone } 145attributes #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" } 146 147!llvm.dbg.cu = !{!0} 148!llvm.module.flags = !{!22} 149 150!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.4 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/crash.cpp] [DW_LANG_C_plus_plus] 151!1 = metadata !{metadata !"crash.cpp", metadata !"/tmp"} 152!2 = metadata !{i32 0} 153!3 = metadata !{metadata !4} 154!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"func", metadata !"func", metadata !"_Z4funci", i32 6, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.A*, i32)* @_Z4funci, null, null, metadata !2, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [func] 155!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/crash.cpp] 156!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 157!7 = metadata !{metadata !8, metadata !21} 158!8 = metadata !{i32 786451, metadata !1, null, metadata !"A", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !9, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [A] [line 1, size 8, align 8, offset 0] [def] [from ] 159!9 = metadata !{metadata !10, metadata !15} 160!10 = metadata !{i32 786478, metadata !1, metadata !8, metadata !"A", metadata !"A", metadata !"", i32 2, metadata !11, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !14, i32 2} ; [ DW_TAG_subprogram ] [line 2] [A] 161!11 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !12, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 162!12 = metadata !{null, metadata !13} 163!13 = metadata !{i32 786447, i32 0, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from A] 164!14 = metadata !{i32 786468} 165!15 = metadata !{i32 786478, metadata !1, metadata !8, metadata !"A", metadata !"A", metadata !"", i32 3, metadata !16, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !20, i32 3} ; [ DW_TAG_subprogram ] [line 3] [A] 166!16 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !17, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 167!17 = metadata !{null, metadata !13, metadata !18} 168!18 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !19} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from ] 169!19 = metadata !{i32 786470, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !8} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from A] 170!20 = metadata !{i32 786468} 171!21 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 172!22 = metadata !{i32 2, metadata !"Dwarf Version", i32 3} 173!23 = metadata !{i32 786689, metadata !4, metadata !"", metadata !5, i32 16777222, metadata !21, i32 0, i32 0, i64 2} ; [ DW_TAG_arg_variable ] [line 6] 174!24 = metadata !{i32 786688, metadata !4, metadata !"a", metadata !5, i32 7, metadata !8, i32 8192, i32 0} ; [ DW_TAG_auto_variable ] [a] [line 7] 175!25 = metadata !{i32 7, i32 0, metadata !4, null} 176!26 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ] 177