xref: /llvm-project/llvm/test/DebugInfo/X86/array.ll (revision 5a288fa32e0c91b211e39f3e370255916902f898) 
1; ModuleID = 'array.c'
2;
3; From (clang -g -c -O1):
4;
5; void f(int* p) {
6;   p[0] = 42;
7; }
8;
9; int main(int argc, char** argv) {
10;   int array[4] = { 0, 1, 2, 3 };
11;   f(array);
12;   return array[0];
13; }
14;
15; RUN: llc -filetype=asm %s -o - | FileCheck %s
16; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump -v - --debug-info | FileCheck %s --check-prefix=DWARF
17
18; CHECK-LABEL: _main:
19; CHECK: movaps {{.*}}, (%rsp)
20; CHECK: movq    %rsp, %rdi
21; CHECK: callq _f
22
23; DWARF: DW_TAG_variable
24; DWARF-NEXT:              DW_AT_location [DW_FORM_exprloc]      (DW_OP_fbreg +0)
25; DWARF-NEXT:              DW_AT_name [DW_FORM_strp]     ( {{.*}} = "array")
26
27; ModuleID = '/tmp/array.c'
28source_filename = "/tmp/array.c"
29target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
30target triple = "x86_64-apple-macosx10.12.0"
31
32@main.array = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16
33
34; Function Attrs: nounwind ssp uwtable
35define void @f(ptr nocapture %p) local_unnamed_addr #0 !dbg !8 {
36entry:
37  tail call void @llvm.dbg.value(metadata ptr %p, metadata !14, metadata !15), !dbg !16
38  store i32 42, ptr %p, align 4, !dbg !17, !tbaa !18
39  ret void, !dbg !22
40}
41
42; Function Attrs: nounwind readnone speculatable
43declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
44
45; Function Attrs: nounwind ssp uwtable
46define i32 @main(i32 %argc, ptr nocapture readnone %argv) local_unnamed_addr #0 !dbg !23 {
47entry:
48  %array = alloca [4 x i32], align 16
49  tail call void @llvm.dbg.value(metadata i32 %argc, metadata !30, metadata !15), !dbg !36
50  tail call void @llvm.dbg.value(metadata ptr %argv, metadata !31, metadata !15), !dbg !37
51  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %array) #3, !dbg !38
52  tail call void @llvm.dbg.declare(metadata ptr %array, metadata !32, metadata !15), !dbg !39
53  call void @llvm.memcpy.p0.p0.i64(ptr align 16 nonnull %array, ptr align 16 @main.array, i64 16, i1 false), !dbg !39
54  call void @f(ptr nonnull %array), !dbg !41
55  %0 = load i32, ptr %array, align 16, !dbg !42, !tbaa !18
56  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %array) #3, !dbg !43
57  ret i32 %0, !dbg !44
58}
59
60; Function Attrs: argmemonly nounwind
61declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2
62
63; Function Attrs: argmemonly nounwind
64declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #2
65
66; Function Attrs: argmemonly nounwind
67declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2
68
69; Function Attrs: nounwind readnone speculatable
70declare void @llvm.dbg.value(metadata, metadata, metadata) #1
71
72attributes #0 = { nounwind ssp uwtable }
73attributes #1 = { nounwind readnone speculatable }
74attributes #2 = { argmemonly nounwind }
75attributes #3 = { nounwind }
76
77!llvm.dbg.cu = !{!0}
78!llvm.module.flags = !{!3, !4, !5, !6}
79!llvm.ident = !{!7}
80
81!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 303873) (llvm/trunk 303875)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
82!1 = !DIFile(filename: "/tmp/array.c", directory: "/")
83!2 = !{}
84!3 = !{i32 2, !"Dwarf Version", i32 4}
85!4 = !{i32 2, !"Debug Info Version", i32 3}
86!5 = !{i32 1, !"wchar_size", i32 4}
87!6 = !{i32 7, !"PIC Level", i32 2}
88!7 = !{!"clang version 5.0.0 (trunk 303873) (llvm/trunk 303875)"}
89!8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13)
90!9 = !DISubroutineType(types: !10)
91!10 = !{null, !11}
92!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
93!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
94!13 = !{!14}
95!14 = !DILocalVariable(name: "p", arg: 1, scope: !8, file: !1, line: 1, type: !11)
96!15 = !DIExpression()
97!16 = !DILocation(line: 1, column: 13, scope: !8)
98!17 = !DILocation(line: 2, column: 8, scope: !8)
99!18 = !{!19, !19, i64 0}
100!19 = !{!"int", !20, i64 0}
101!20 = !{!"omnipotent char", !21, i64 0}
102!21 = !{!"Simple C/C++ TBAA"}
103!22 = !DILocation(line: 3, column: 1, scope: !8)
104!23 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 5, type: !24, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !29)
105!24 = !DISubroutineType(types: !25)
106!25 = !{!12, !12, !26}
107!26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !27, size: 64)
108!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
109!28 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
110!29 = !{!30, !31, !32}
111!30 = !DILocalVariable(name: "argc", arg: 1, scope: !23, file: !1, line: 5, type: !12)
112!31 = !DILocalVariable(name: "argv", arg: 2, scope: !23, file: !1, line: 5, type: !26)
113!32 = !DILocalVariable(name: "array", scope: !23, file: !1, line: 6, type: !33)
114!33 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !34)
115!34 = !{!35}
116!35 = !DISubrange(count: 4)
117!36 = !DILocation(line: 5, column: 14, scope: !23)
118!37 = !DILocation(line: 5, column: 27, scope: !23)
119!38 = !DILocation(line: 6, column: 3, scope: !23)
120!39 = !DILocation(line: 6, column: 7, scope: !23)
121!40 = !DILocation(line: 7, column: 5, scope: !23)
122!41 = !DILocation(line: 7, column: 3, scope: !23)
123!42 = !DILocation(line: 8, column: 10, scope: !23)
124!43 = !DILocation(line: 9, column: 1, scope: !23)
125!44 = !DILocation(line: 8, column: 3, scope: !23)
126