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