xref: /llvm-project/llvm/test/Transforms/Inline/alloca-dbgdeclare.ll (revision 094572701dce4aaf36f4521d6cf750420d39f206) 
1; RUN: opt -passes=inline -S < %s | FileCheck %s
2; RUN: opt -passes='cgscc(inline)' -S < %s | FileCheck %s
3
4; RUN: opt -passes=inline -S < %s --try-experimental-debuginfo-iterators | FileCheck %s
5; RUN: opt -passes='cgscc(inline)' -S < %s --try-experimental-debuginfo-iterators | FileCheck %s
6; struct A {
7;   int arg0;
8;   double arg1[2];
9; } a, b;
10;
11; void fn3(A p1) {
12;   if (p1.arg0)
13;     a = p1;
14; }
15;
16; void fn4() { fn3(b); }
17;
18; void fn5() {
19;   while (1)
20;     fn4();
21; }
22; ModuleID = 'test.cpp'
23source_filename = "test/Transforms/Inline/alloca-dbgdeclare.ll"
24target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
25target triple = "aarch64-apple-darwin"
26
27%struct.A = type { i32, [2 x double] }
28
29@a = global %struct.A zeroinitializer, align 8, !dbg !0
30@b = global %struct.A zeroinitializer, align 8, !dbg !12
31
32; Function Attrs: nounwind
33declare void @_Z3fn31A(ptr nocapture readonly) #0
34
35; Function Attrs: nounwind readnone
36declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
37
38; Function Attrs: argmemonly nounwind
39declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #2
40
41; Function Attrs: nounwind
42define void @_Z3fn4v() #0 !dbg !22 {
43entry:
44; Test that the dbg.declare is moved together with the alloca.
45; CHECK: define void @_Z3fn5v()
46; CHECK-NEXT: entry:
47; CHECK-NEXT:   %agg.tmp.sroa.3.i = alloca [20 x i8], align 4
48; CHECK-NEXT:   br label %while.body
49; CHECK:      while.body:
50; CHECK-NEXT:   llvm.lifetime.start
51; CHECK-NEXT:   #dbg_declare(ptr %agg.tmp.sroa.3.i,
52  %agg.tmp.sroa.3 = alloca [20 x i8], align 4
53  tail call void @llvm.dbg.declare(metadata ptr %agg.tmp.sroa.3, metadata !25, metadata !30), !dbg !31
54  %agg.tmp.sroa.0.0.copyload = load i32, ptr @b, align 8, !dbg !33
55  tail call void @llvm.dbg.value(metadata i32 %agg.tmp.sroa.0.0.copyload, metadata !25, metadata !34), !dbg !31
56  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp.sroa.3, ptr align 4 getelementptr (i8, ptr @b, i64 4), i64 20, i1 false), !dbg !33
57  tail call void @llvm.dbg.declare(metadata ptr undef, metadata !25, metadata !35) #0, !dbg !31
58  %tobool.i = icmp eq i32 %agg.tmp.sroa.0.0.copyload, 0, !dbg !36
59  br i1 %tobool.i, label %_Z3fn31A.exit, label %if.then.i, !dbg !38
60
61if.then.i:                                        ; preds = %entry
62  store i32 %agg.tmp.sroa.0.0.copyload, ptr @a, align 8, !dbg !39
63  call void @llvm.memcpy.p0.p0.i64(ptr align 4 getelementptr (i8, ptr @a, i64 4), ptr align 4 %agg.tmp.sroa.3, i64 20, i1 false), !dbg !39
64  br label %_Z3fn31A.exit, !dbg !39
65
66_Z3fn31A.exit:                                    ; preds = %if.then.i, %entry
67
68  ret void, !dbg !33
69}
70
71; Function Attrs: noreturn nounwind
72define void @_Z3fn5v() #3 !dbg !40 {
73entry:
74  br label %while.body, !dbg !41
75
76while.body:                                       ; preds = %while.body, %entry
77  call void @_Z3fn4v(), !dbg !42
78  br label %while.body, !dbg !41
79}
80
81; Function Attrs: nounwind readnone
82declare void @llvm.dbg.value(metadata, metadata, metadata) #1
83
84attributes #0 = { nounwind }
85attributes #1 = { nounwind readnone }
86attributes #2 = { argmemonly nounwind }
87attributes #3 = { noreturn nounwind }
88
89!llvm.dbg.cu = !{!14}
90!llvm.module.flags = !{!19, !20}
91!llvm.ident = !{!21}
92
93!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
94!1 = !DIGlobalVariable(name: "a", scope: null, file: !2, line: 4, type: !3, isLocal: false, isDefinition: true)
95!2 = !DIFile(filename: "test.cpp", directory: "")
96!3 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !2, line: 1, size: 192, align: 64, elements: !4, identifier: "_ZTS1A")
97!4 = !{!5, !7}
98!5 = !DIDerivedType(tag: DW_TAG_member, name: "arg0", scope: !3, file: !2, line: 2, baseType: !6, size: 32, align: 32)
99!6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
100!7 = !DIDerivedType(tag: DW_TAG_member, name: "arg1", scope: !3, file: !2, line: 3, baseType: !8, size: 128, align: 64, offset: 64)
101!8 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 128, align: 64, elements: !10)
102!9 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
103!10 = !{!11}
104!11 = !DISubrange(count: 2)
105!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())
106!13 = !DIGlobalVariable(name: "b", scope: null, file: !2, line: 4, type: !3, isLocal: false, isDefinition: true)
107!14 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !15, producer: "clang version 3.7.0 (trunk 227480) (llvm/trunk 227517)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !16, retainedTypes: !17, globals: !18, imports: !16)
108!15 = !DIFile(filename: "<stdin>", directory: "")
109!16 = !{}
110!17 = !{!3}
111!18 = !{!0, !12}
112!19 = !{i32 2, !"Dwarf Version", i32 4}
113!20 = !{i32 2, !"Debug Info Version", i32 3}
114!21 = !{!"clang version 3.7.0 (trunk 227480) (llvm/trunk 227517)"}
115!22 = distinct !DISubprogram(name: "fn4", linkageName: "_Z3fn4v", scope: !2, file: !2, line: 11, type: !23, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: true, unit: !14, retainedNodes: !16)
116!23 = !DISubroutineType(types: !24)
117!24 = !{null}
118!25 = !DILocalVariable(name: "p1", arg: 1, scope: !26, file: !2, line: 6, type: !3)
119!26 = distinct !DISubprogram(name: "fn3", linkageName: "_Z3fn31A", scope: !2, file: !2, line: 6, type: !27, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !14, retainedNodes: !29)
120!27 = !DISubroutineType(types: !28)
121!28 = !{null, !3}
122!29 = !{!25}
123!30 = !DIExpression(DW_OP_LLVM_fragment, 32, 160)
124!31 = !DILocation(line: 6, scope: !26, inlinedAt: !32)
125!32 = distinct !DILocation(line: 11, scope: !22)
126!33 = !DILocation(line: 11, scope: !22)
127!34 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
128!35 = !DIExpression(DW_OP_deref)
129!36 = !DILocation(line: 7, scope: !37, inlinedAt: !32)
130!37 = distinct !DILexicalBlock(scope: !26, file: !2, line: 7)
131!38 = !DILocation(line: 7, scope: !26, inlinedAt: !32)
132!39 = !DILocation(line: 8, scope: !37, inlinedAt: !32)
133!40 = distinct !DISubprogram(name: "fn5", linkageName: "_Z3fn5v", scope: !2, file: !2, line: 13, type: !23, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: true, unit: !14, retainedNodes: !16)
134!41 = !DILocation(line: 14, scope: !40)
135!42 = !DILocation(line: 15, scope: !40)
136
137