1 ; RUN: opt -sroa < %s -S -o - | FileCheck %s
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))
22 ; extern int call_me(struct r);
24 ; extern __SIZE_TYPE__ t;
29 ; struct p y = {t, t};
30 ; struct r r = {.y = y};
34 ; ModuleID = 'pr22393.cc'
35 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
36 target triple = "x86_64-apple-darwin"
38 %struct.p = type { i64, i64 }
39 %struct.r = type { i32, %struct.p, %struct.p }
41 @t = external global i64
43 ; Function Attrs: nounwind
44 define i32 @_Z4testv() #0 !dbg !17 {
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
54 if.then: ; preds = %entry
55 store i32 0, i32* %retval, !dbg !27
56 br label %return, !dbg !27
58 if.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
85 return: ; preds = %if.end, %if.then
86 %6 = load i32, i32* %retval, !dbg !34
90 declare i32 @_Z5maybev()
92 ; Function Attrs: nounwind readnone
93 declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
95 ; Function Attrs: nounwind
96 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #3
98 declare i32 @_Z7call_me1r(%struct.r* byval align 8)
100 attributes #0 = { nounwind }
101 attributes #2 = { nounwind readnone }
102 attributes #3 = { nounwind }
105 !llvm.module.flags = !{!21, !22}
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: "")
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: "")
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)
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)