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1; ModuleID = 'array.c'
2;
3; From (clang -g -c -O0):
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: opt %s -O2 -S -o - | FileCheck %s
16; Test that we correctly lower dbg.declares for arrays.
17;
18; CHECK: define i32 @main
19; CHECK: call void @llvm.dbg.value(metadata i32 42, i64 0, metadata ![[ARRAY:[0-9]+]], metadata ![[EXPR:[0-9]+]])
20; CHECK: ![[ARRAY]] = !DILocalVariable(name: "array",{{.*}} line: 6
21; CHECK: ![[EXPR]] = !DIExpression(DW_OP_bit_piece, 0, 32)
22target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
23target triple = "x86_64-apple-macosx10.9.0"
24
25@main.array = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16
26
27; Function Attrs: nounwind ssp uwtable
28define void @f(i32* %p) #0 !dbg !4 {
29entry:
30  %p.addr = alloca i32*, align 8
31  store i32* %p, i32** %p.addr, align 8
32  call void @llvm.dbg.declare(metadata i32** %p.addr, metadata !19, metadata !DIExpression()), !dbg !20
33  %0 = load i32*, i32** %p.addr, align 8, !dbg !21
34  %arrayidx = getelementptr inbounds i32, i32* %0, i64 0, !dbg !21
35  store i32 42, i32* %arrayidx, align 4, !dbg !21
36  ret void, !dbg !22
37}
38
39; Function Attrs: nounwind readnone
40declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
41
42; Function Attrs: nounwind ssp uwtable
43define i32 @main(i32 %argc, i8** %argv) #0 !dbg !10 {
44entry:
45  %retval = alloca i32, align 4
46  %argc.addr = alloca i32, align 4
47  %argv.addr = alloca i8**, align 8
48  %array = alloca [4 x i32], align 16
49  store i32 0, i32* %retval
50  store i32 %argc, i32* %argc.addr, align 4
51  call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !23, metadata !DIExpression()), !dbg !24
52  store i8** %argv, i8*** %argv.addr, align 8
53  call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !25, metadata !DIExpression()), !dbg !24
54  call void @llvm.dbg.declare(metadata [4 x i32]* %array, metadata !26, metadata !DIExpression()), !dbg !30
55  %0 = bitcast [4 x i32]* %array to i8*, !dbg !30
56  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast ([4 x i32]* @main.array to i8*), i64 16, i32 16, i1 false), !dbg !30
57  %arraydecay = getelementptr inbounds [4 x i32], [4 x i32]* %array, i32 0, i32 0, !dbg !31
58  call void @f(i32* %arraydecay), !dbg !31
59  %arrayidx = getelementptr inbounds [4 x i32], [4 x i32]* %array, i32 0, i64 0, !dbg !32
60  %1 = load i32, i32* %arrayidx, align 4, !dbg !32
61  ret i32 %1, !dbg !32
62}
63
64; Function Attrs: nounwind
65declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2
66
67attributes #0 = { nounwind ssp uwtable }
68attributes #1 = { nounwind readnone }
69attributes #2 = { nounwind }
70
71!llvm.dbg.cu = !{!0}
72!llvm.module.flags = !{!16, !17}
73!llvm.ident = !{!18}
74
75!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
76!1 = !DIFile(filename: "array.c", directory: "")
77!2 = !{}
78!4 = distinct !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
79!5 = !DIFile(filename: "array.c", directory: "")
80!6 = !DISubroutineType(types: !7)
81!7 = !{null, !8}
82!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
83!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
84!10 = distinct !DISubprogram(name: "main", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !11, variables: !2)
85!11 = !DISubroutineType(types: !12)
86!12 = !{!9, !9, !13}
87!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !14)
88!14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !15)
89!15 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
90!16 = !{i32 2, !"Dwarf Version", i32 2}
91!17 = !{i32 1, !"Debug Info Version", i32 3}
92!18 = !{!"clang version 3.5.0 "}
93!19 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8)
94!20 = !DILocation(line: 1, scope: !4)
95!21 = !DILocation(line: 2, scope: !4)
96!22 = !DILocation(line: 3, scope: !4)
97!23 = !DILocalVariable(name: "argc", line: 5, arg: 1, scope: !10, file: !5, type: !9)
98!24 = !DILocation(line: 5, scope: !10)
99!25 = !DILocalVariable(name: "argv", line: 5, arg: 2, scope: !10, file: !5, type: !13)
100!26 = !DILocalVariable(name: "array", line: 6, scope: !10, file: !5, type: !27)
101!27 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !9, elements: !28)
102!28 = !{!29}
103!29 = !DISubrange(count: 4)
104!30 = !DILocation(line: 6, scope: !10)
105!31 = !DILocation(line: 7, scope: !10)
106!32 = !DILocation(line: 8, scope: !10)
107