xref: /llvm-project/llvm/test/DebugInfo/X86/pieces-3.ll (revision 5ee088134fb87f7d716c58fa65beb11fb6afcb22) 
1; RUN: llc %s -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump -v - | FileCheck %s
2; RUN: llc --try-experimental-debuginfo-iterators %s -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump -v - | FileCheck %s
3;
4;    // Compile with -O1
5;    typedef struct {
6;      int a;
7;      int b;
8;    } Inner;
9;
10;    typedef struct {
11;      Inner inner[2];
12;    } Outer;
13;
14;    int foo(Outer outer) {
15;      Inner i1 = outer.inner[1];
16;      return i1.a;
17;    }
18;
19; CHECK: DW_TAG_formal_parameter [3]
20; CHECK-NEXT:   DW_AT_location [DW_FORM_data4]        (
21; CHECK-NEXT:     [0x0000000000000000, 0x0000000000000009): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_piece 0x4, DW_OP_reg4 RSI, DW_OP_piece 0x4
22; CHECK-NEXT:   DW_AT_name {{.*}}"outer"
23; CHECK: DW_TAG_variable
24; CHECK-NEXT:   DW_AT_location [DW_FORM_data4]        (0x0000002a
25; CHECK-NEXT:     [0x0000000000000007, 0x0000000000000009): DW_OP_reg4 RSI, DW_OP_piece 0x4)
26; CHECK-NEXT:   "i1"
27
28; ModuleID = '/Volumes/Data/llvm/test/DebugInfo/X86/sroasplit-2.ll'
29target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
30target triple = "x86_64-apple-macosx10.9.0"
31
32; Function Attrs: nounwind ssp uwtable
33define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 {
34  call void @llvm.dbg.value(metadata i64 %outer.coerce0, metadata !24, metadata !25), !dbg !26
35  call void @llvm.dbg.declare(metadata !{null}, metadata !27, metadata !28), !dbg !26
36  call void @llvm.dbg.value(metadata i64 %outer.coerce1, metadata !29, metadata !30), !dbg !26
37  call void @llvm.dbg.declare(metadata !{null}, metadata !31, metadata !32), !dbg !26
38  ; The 'trunc' generates no extra code, thus i1 is visible throughout its scope.
39  %outer.sroa.1.8.extract.trunc = trunc i64 %outer.coerce1 to i32, !dbg !33
40  call void @llvm.dbg.value(metadata i32 %outer.sroa.1.8.extract.trunc, metadata !34, metadata !35), !dbg !33
41  %outer.sroa.1.12.extract.shift = lshr i64 %outer.coerce1, 32, !dbg !33
42  %outer.sroa.1.12.extract.trunc = trunc i64 %outer.sroa.1.12.extract.shift to i32, !dbg !33
43  call void @llvm.dbg.value(metadata i64 %outer.sroa.1.12.extract.shift, metadata !34, metadata !37), !dbg !33
44  call void @llvm.dbg.value(metadata i32 %outer.sroa.1.12.extract.trunc, metadata !34, metadata !37), !dbg !33
45  call void @llvm.dbg.declare(metadata !{null}, metadata !34, metadata !35), !dbg !33
46  ret i32 %outer.sroa.1.8.extract.trunc, !dbg !36
47}
48
49; Function Attrs: nounwind readnone
50declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
51
52; Function Attrs: nounwind
53declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #2
54
55; Function Attrs: nounwind readnone
56declare void @llvm.dbg.value(metadata, metadata, metadata) #1
57
58attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" }
59attributes #1 = { nounwind readnone }
60attributes #2 = { nounwind }
61
62!llvm.dbg.cu = !{!0}
63!llvm.module.flags = !{!21, !22}
64!llvm.ident = !{!23}
65
66!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)
67!1 = !DIFile(filename: "sroasplit-2.c", directory: "")
68!2 = !{}
69!4 = distinct !DISubprogram(name: "foo", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, retainedNodes: !2)
70!5 = !DIFile(filename: "sroasplit-2.c", directory: "")
71!6 = !DISubroutineType(types: !7)
72!7 = !{!8, !9}
73!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
74!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10)
75!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11)
76!11 = !{!12}
77!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13)
78!13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19)
79!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15)
80!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16)
81!16 = !{!17, !18}
82!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8)
83!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8)
84!19 = !{!20}
85!20 = !DISubrange(count: 2)
86!21 = !{i32 2, !"Dwarf Version", i32 2}
87!22 = !{i32 1, !"Debug Info Version", i32 3}
88!23 = !{!"clang version 3.5.0 "}
89!24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9)
90!25 = !DIExpression(DW_OP_LLVM_fragment, 0, 64)
91!26 = !DILocation(line: 10, scope: !4)
92!27 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9)
93!28 = !DIExpression(DW_OP_LLVM_fragment, 64, 64)
94!29 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9)
95!30 = !DIExpression(DW_OP_LLVM_fragment, 96, 32)
96!31 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9)
97!32 = !DIExpression(DW_OP_LLVM_fragment, 64, 32)
98!33 = !DILocation(line: 11, scope: !4)
99!34 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14)
100!35 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
101!36 = !DILocation(line: 12, scope: !4)
102!37 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
103