1 ; RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
3 ; Verify that we have correct debug info for local variables in code
4 ; instrumented with AddressSanitizer.
6 ; Generated from the source file test.cc:
10 ; with "clang++ -S -emit-llvm -fsanitize=address -O0 -g test.cc"
12 ; First, argument variable "y" resides in %rdi:
13 ; CHECK: DEBUG_VALUE: bar:y <- RDI
15 ; Then its address is stored in a location on a stack:
16 ; CHECK: movq %rdi, [[OFFSET:[0-9]+]](%rsp)
17 ; CHECK-NEXT: [[START_LABEL:.Ltmp[0-9]+]]
18 ; CHECK-NEXT: DEBUG_VALUE: bar:y <- [RSP+[[OFFSET]]]
19 ; This location should be valid until the end of the function.
21 ; CHECK: .Ldebug_loc{{[0-9]+}}:
22 ; We expect two location ranges for the variable.
24 ; First, it is stored in %rdx:
25 ; CHECK: .Lset{{[0-9]+}} = .Lfunc_begin0-.Lfunc_begin0
26 ; CHECK-NEXT: .quad .Lset{{[0-9]+}}
27 ; CHECK-NEXT: .Lset{{[0-9]+}} = [[START_LABEL]]-.Lfunc_begin0
28 ; CHECK-NEXT: .quad .Lset{{[0-9]+}}
31 ; Then it's addressed via %rsp:
32 ; CHECK: .Lset{{[0-9]+}} = [[START_LABEL]]-.Lfunc_begin0
33 ; CHECK-NEXT: .quad .Lset{{[0-9]+}}
34 ; CHECK-NEXT: .Lset{{[0-9]+}} = .Lfunc_end0-.Lfunc_begin0
35 ; CHECK-NEXT: .quad .Lset{{[0-9]+}}
37 ; CHECK-NEXT: [[OFFSET]]
40 ; ModuleID = 'test.cc'
41 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
42 target triple = "x86_64-unknown-linux-gnu"
44 @llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 1, void ()* @asan.module_ctor }]
45 @__asan_option_detect_stack_use_after_return = external global i32
46 @__asan_gen_ = private unnamed_addr constant [16 x i8] c"1 32 4 6 y.addr\00", align 1
48 ; Function Attrs: nounwind sanitize_address uwtable
49 define i32 @_Z3bari(i32 %y) #0 {
51 %MyAlloca = alloca [64 x i8], align 32
52 %0 = ptrtoint [64 x i8]* %MyAlloca to i64
53 %1 = load i32* @__asan_option_detect_stack_use_after_return
54 %2 = icmp ne i32 %1, 0
55 br i1 %2, label %3, label %5
57 ; <label>:3 ; preds = %entry
58 %4 = call i64 @__asan_stack_malloc_0(i64 64, i64 %0)
61 ; <label>:5 ; preds = %entry, %3
62 %6 = phi i64 [ %0, %entry ], [ %4, %3 ]
64 %8 = inttoptr i64 %7 to i32*
65 %9 = inttoptr i64 %6 to i64*
66 store i64 1102416563, i64* %9
68 %11 = inttoptr i64 %10 to i64*
69 store i64 ptrtoint ([16 x i8]* @__asan_gen_ to i64), i64* %11
71 %13 = inttoptr i64 %12 to i64*
72 store i64 ptrtoint (i32 (i32)* @_Z3bari to i64), i64* %13
74 %15 = add i64 %14, 2147450880
76 %17 = inttoptr i64 %16 to i64*
77 store i64 -868083100587789839, i64* %17
78 %18 = ptrtoint i32* %8 to i64
80 %20 = add i64 %19, 2147450880
81 %21 = inttoptr i64 %20 to i8*
83 %23 = icmp ne i8 %22, 0
84 call void @llvm.dbg.declare(metadata !{i32* %8}, metadata !12)
85 br i1 %23, label %24, label %30
87 ; <label>:24 ; preds = %5
90 %27 = trunc i64 %26 to i8
91 %28 = icmp sge i8 %27, %22
92 br i1 %28, label %29, label %30
94 ; <label>:29 ; preds = %24
95 call void @__asan_report_store4(i64 %18)
96 call void asm sideeffect "", ""()
99 ; <label>:30 ; preds = %24, %5
100 store i32 %y, i32* %8, align 4
101 %31 = ptrtoint i32* %8 to i64, !dbg !13
102 %32 = lshr i64 %31, 3, !dbg !13
103 %33 = add i64 %32, 2147450880, !dbg !13
104 %34 = inttoptr i64 %33 to i8*, !dbg !13
105 %35 = load i8* %34, !dbg !13
106 %36 = icmp ne i8 %35, 0, !dbg !13
107 br i1 %36, label %37, label %43, !dbg !13
109 ; <label>:37 ; preds = %30
110 %38 = and i64 %31, 7, !dbg !13
111 %39 = add i64 %38, 3, !dbg !13
112 %40 = trunc i64 %39 to i8, !dbg !13
113 %41 = icmp sge i8 %40, %35, !dbg !13
114 br i1 %41, label %42, label %43
116 ; <label>:42 ; preds = %37
117 call void @__asan_report_load4(i64 %31), !dbg !13
118 call void asm sideeffect "", ""()
121 ; <label>:43 ; preds = %37, %30
122 %44 = load i32* %8, align 4, !dbg !13
123 %add = add nsw i32 %44, 2, !dbg !13
124 store i64 1172321806, i64* %9, !dbg !13
125 %45 = icmp ne i64 %6, %0, !dbg !13
126 br i1 %45, label %46, label %53, !dbg !13
128 ; <label>:46 ; preds = %43
129 %47 = add i64 %15, 0, !dbg !13
130 %48 = inttoptr i64 %47 to i64*, !dbg !13
131 store i64 -723401728380766731, i64* %48, !dbg !13
132 %49 = add i64 %6, 56, !dbg !13
133 %50 = inttoptr i64 %49 to i64*, !dbg !13
134 %51 = load i64* %50, !dbg !13
135 %52 = inttoptr i64 %51 to i8*, !dbg !13
136 store i8 0, i8* %52, !dbg !13
137 br label %56, !dbg !13
139 ; <label>:53 ; preds = %43
140 %54 = add i64 %15, 0, !dbg !13
141 %55 = inttoptr i64 %54 to i64*, !dbg !13
142 store i64 0, i64* %55, !dbg !13
143 br label %56, !dbg !13
145 ; <label>:56 ; preds = %53, %46
146 ret i32 %add, !dbg !13
149 ; Function Attrs: nounwind readnone
150 declare void @llvm.dbg.declare(metadata, metadata) #1
152 define internal void @asan.module_ctor() {
153 call void @__asan_init_v3()
157 declare void @__asan_init_v3()
159 declare void @__asan_report_load4(i64)
161 declare void @__asan_report_store4(i64)
163 declare i64 @__asan_stack_malloc_0(i64, i64)
165 attributes #0 = { nounwind sanitize_address uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
166 attributes #1 = { nounwind readnone }
169 !llvm.module.flags = !{!9, !10}
172 !0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 (209308)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/llvm_cmake_gcc/test.cc] [DW_LANG_C_plus_plus]
173 !1 = metadata !{metadata !"test.cc", metadata !"/llvm_cmake_gcc"}
175 !3 = metadata !{metadata !4}
176 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"bar", metadata !"bar", metadata !"_Z3bari", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32)* @_Z3bari, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [bar]
177 !5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/llvm_cmake_gcc/test.cc]
178 !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 ]
179 !7 = metadata !{metadata !8, metadata !8}
180 !8 = 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]
181 !9 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
182 !10 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
183 !11 = metadata !{metadata !"clang version 3.5.0 (209308)"}
184 !12 = metadata !{i32 786689, metadata !4, metadata !"y", metadata !5, i32 16777217, metadata !8, i32 0, i32 0, i64 2} ; [ DW_TAG_arg_variable ] [y] [line 1]
185 !13 = metadata !{i32 2, i32 0, metadata !4, null}