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 15 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" 16 target 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 26 define void @_Z4funci(%struct.A* noalias sret %agg.result, i32) #0 "stack-protector-buffer-size"="1" { 27 entry: 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 88 declare void @llvm.dbg.declare(metadata, metadata) #1 89 90 declare void @_ZN1AC1Ev(%struct.A*) #2 91 92 define 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 99 declare void @__asan_init_v3() 100 101 declare void @__asan_report_load1(i64) 102 103 declare void @__asan_report_load2(i64) 104 105 declare void @__asan_report_load4(i64) 106 107 declare void @__asan_report_load8(i64) 108 109 declare void @__asan_report_load16(i64) 110 111 declare void @__asan_report_store1(i64) 112 113 declare void @__asan_report_store2(i64) 114 115 declare void @__asan_report_store4(i64) 116 117 declare void @__asan_report_store8(i64) 118 119 declare void @__asan_report_store16(i64) 120 121 declare void @__asan_report_load_n(i64, i64) 122 123 declare void @__asan_report_store_n(i64, i64) 124 125 declare void @__asan_handle_no_return() 126 127 declare i64 @__asan_stack_malloc(i64, i64) 128 129 declare void @__asan_stack_free(i64, i64, i64) 130 131 declare void @__asan_poison_stack_memory(i64, i64) 132 133 declare void @__asan_unpoison_stack_memory(i64, i64) 134 135 declare void @__asan_before_dynamic_init(i64) 136 137 declare void @__asan_after_dynamic_init() 138 139 declare void @__asan_register_globals(i64, i64) 140 141 declare void @__asan_unregister_globals(i64, i64) 142 143 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" } 144 attributes #1 = { nounwind readnone } 145 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" } 146 147 !llvm.dbg.cu = !{!0} 148 !llvm.module.flags = !{!22, !27} 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 !{} 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, metadata !28} ; [ 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 !27 = metadata !{i32 1, metadata !"Debug Info Version", i32 1} 178 !28 = metadata !{i64 2} 179
