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1; RUN: opt -sroa < %s -S -o - | FileCheck %s
2;
3; Test that recursively splitting an alloca updates the debug info correctly.
4; CHECK: %[[T:.*]] = load i64, i64* @t, align 8
5; CHECK: call void @llvm.dbg.value(metadata i64 %[[T]], metadata ![[Y:.*]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64))
6; CHECK: %[[T1:.*]] = load i64, i64* @t, align 8
7; CHECK: call void @llvm.dbg.value(metadata i64 %[[T1]], metadata ![[Y]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64))
8; CHECK: call void @llvm.dbg.value(metadata i64 %[[T]], metadata ![[R:.*]], metadata !DIExpression(DW_OP_LLVM_fragment, 192, 64))
9; CHECK: call void @llvm.dbg.value(metadata i64 %[[T1]], metadata ![[R]], metadata !DIExpression(DW_OP_LLVM_fragment, 256, 64))
10;
11; struct p {
12;   __SIZE_TYPE__ s;
13;   __SIZE_TYPE__ t;
14; };
15;
16; struct r {
17;   int i;
18;   struct p x;
19;   struct p y;
20; };
21;
22; extern int call_me(struct r);
23; extern int maybe();
24; extern __SIZE_TYPE__ t;
25;
26; int test() {
27;   if (maybe())
28;     return 0;
29;   struct p y = {t, t};
30;   struct r r = {.y = y};
31;   return call_me(r);
32; }
33
34; ModuleID = 'pr22393.cc'
35target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
36target triple = "x86_64-apple-darwin"
37
38%struct.p = type { i64, i64 }
39%struct.r = type { i32, %struct.p, %struct.p }
40
41@t = external global i64
42
43; Function Attrs: nounwind
44define i32 @_Z4testv() #0 !dbg !17 {
45entry:
46  %retval = alloca i32, align 4
47  %y = alloca %struct.p, align 8
48  %r = alloca %struct.r, align 8
49  %agg.tmp = alloca %struct.r, align 8
50  %call = call i32 @_Z5maybev(), !dbg !24
51  %tobool = icmp ne i32 %call, 0, !dbg !24
52  br i1 %tobool, label %if.then, label %if.end, !dbg !26
53
54if.then:                                          ; preds = %entry
55  store i32 0, i32* %retval, !dbg !27
56  br label %return, !dbg !27
57
58if.end:                                           ; preds = %entry
59  call void @llvm.dbg.declare(metadata %struct.p* %y, metadata !28, metadata !29), !dbg !30
60  %s = getelementptr inbounds %struct.p, %struct.p* %y, i32 0, i32 0, !dbg !30
61  %0 = load i64, i64* @t, align 8, !dbg !30
62  store i64 %0, i64* %s, align 8, !dbg !30
63  %t = getelementptr inbounds %struct.p, %struct.p* %y, i32 0, i32 1, !dbg !30
64  %1 = load i64, i64* @t, align 8, !dbg !30
65  store i64 %1, i64* %t, align 8, !dbg !30
66  call void @llvm.dbg.declare(metadata %struct.r* %r, metadata !31, metadata !29), !dbg !32
67  %i = getelementptr inbounds %struct.r, %struct.r* %r, i32 0, i32 0, !dbg !32
68  store i32 0, i32* %i, align 4, !dbg !32
69  %x = getelementptr inbounds %struct.r, %struct.r* %r, i32 0, i32 1, !dbg !32
70  %s1 = getelementptr inbounds %struct.p, %struct.p* %x, i32 0, i32 0, !dbg !32
71  store i64 0, i64* %s1, align 8, !dbg !32
72  %t2 = getelementptr inbounds %struct.p, %struct.p* %x, i32 0, i32 1, !dbg !32
73  store i64 0, i64* %t2, align 8, !dbg !32
74  %y3 = getelementptr inbounds %struct.r, %struct.r* %r, i32 0, i32 2, !dbg !32
75  %2 = bitcast %struct.p* %y3 to i8*, !dbg !32
76  %3 = bitcast %struct.p* %y to i8*, !dbg !32
77  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %2, i8* align 8 %3, i64 16, i1 false), !dbg !32
78  %4 = bitcast %struct.r* %agg.tmp to i8*, !dbg !33
79  %5 = bitcast %struct.r* %r to i8*, !dbg !33
80  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %4, i8* align 8 %5, i64 40, i1 false), !dbg !33
81  %call4 = call i32 @_Z7call_me1r(%struct.r* byval align 8 %agg.tmp), !dbg !33
82  store i32 %call4, i32* %retval, !dbg !33
83  br label %return, !dbg !33
84
85return:                                           ; preds = %if.end, %if.then
86  %6 = load i32, i32* %retval, !dbg !34
87  ret i32 %6, !dbg !34
88}
89
90declare i32 @_Z5maybev()
91
92; Function Attrs: nounwind readnone
93declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
94
95; Function Attrs: nounwind
96declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #3
97
98declare i32 @_Z7call_me1r(%struct.r* byval align 8)
99
100attributes #0 = { nounwind }
101attributes #2 = { nounwind readnone }
102attributes #3 = { nounwind }
103
104!llvm.dbg.cu = !{!0}
105!llvm.module.flags = !{!21, !22}
106!llvm.ident = !{!23}
107
108!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
109!1 = !DIFile(filename: "<stdin>", directory: "")
110!2 = !{}
111!3 = !{!4, !10}
112!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "p", line: 3, size: 128, align: 64, file: !5, elements: !6, identifier: "_ZTS1p")
113!5 = !DIFile(filename: "pr22393.cc", directory: "")
114!6 = !{!7, !9}
115!7 = !DIDerivedType(tag: DW_TAG_member, name: "s", line: 4, size: 64, align: 64, file: !5, scope: !4, baseType: !8)
116!8 = !DIBasicType(tag: DW_TAG_base_type, name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
117!9 = !DIDerivedType(tag: DW_TAG_member, name: "t", line: 5, size: 64, align: 64, offset: 64, file: !5, scope: !4, baseType: !8)
118!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "r", line: 8, size: 320, align: 64, file: !5, elements: !11, identifier: "_ZTS1r")
119!11 = !{!12, !14, !15}
120!12 = !DIDerivedType(tag: DW_TAG_member, name: "i", line: 9, size: 32, align: 32, file: !5, scope: !10, baseType: !13)
121!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
122!14 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 10, size: 128, align: 64, offset: 64, file: !5, scope: !10, baseType: !4)
123!15 = !DIDerivedType(tag: DW_TAG_member, name: "y", line: 11, size: 128, align: 64, offset: 192, file: !5, scope: !10, baseType: !4)
124!17 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", line: 18, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 18, file: !5, scope: !18, type: !19, retainedNodes: !2)
125!18 = !DIFile(filename: "pr22393.cc", directory: "")
126!19 = !DISubroutineType(types: !20)
127!20 = !{!13}
128!21 = !{i32 2, !"Dwarf Version", i32 4}
129!22 = !{i32 2, !"Debug Info Version", i32 3}
130!23 = !{!"clang version 3.7.0 "}
131!24 = !DILocation(line: 19, scope: !25)
132!25 = distinct !DILexicalBlock(line: 19, column: 0, file: !5, scope: !17)
133!26 = !DILocation(line: 19, scope: !17)
134!27 = !DILocation(line: 20, scope: !25)
135!28 = !DILocalVariable(name: "y", line: 21, scope: !17, file: !18, type: !4)
136!29 = !DIExpression()
137!30 = !DILocation(line: 21, scope: !17)
138!31 = !DILocalVariable(name: "r", line: 22, scope: !17, file: !18, type: !10)
139!32 = !DILocation(line: 22, scope: !17)
140!33 = !DILocation(line: 23, scope: !17)
141!34 = !DILocation(line: 24, scope: !17)
142