1; RUN: llc -O0 %s -filetype=obj -o - | llvm-dwarfdump -debug-loc - | FileCheck %s
2;
3; rdar://problem/15928306
4;
5; Test that we can emit debug info for aggregate values that are split
6; up across multiple registers by SROA.
7;
8;    // Compile with -O1.
9;    typedef struct { long int a; int b;} S;
10;
11;    int foo(S s) {
12;            return s.b;
13;    }
14;
15;
16; CHECK: .debug_loc contents:
17;
18
19; CHECK: (0x0000000000000006, 0x[[LTMP3:.*]]): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_reg0 RAX, DW_OP_piece 0x4
20; 0x0000000000000006 - 0x0000000000000008: rbp-8, piece 0x8, rax, piece 0x4 )
21
22target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
23target triple = "x86_64-apple-macosx10.9.0"
24
25; Function Attrs: nounwind ssp uwtable
26define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 !dbg !4 {
27entry:
28  call void @llvm.dbg.value(metadata i64 %s.coerce0, metadata !20, metadata !24), !dbg !21
29  call void @llvm.dbg.value(metadata i32 %s.coerce1, metadata !22, metadata !27), !dbg !21
30  ret i32 %s.coerce1, !dbg !23
31}
32
33; Function Attrs: nounwind readnone
34declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
35
36; Function Attrs: nounwind readnone
37declare void @llvm.dbg.value(metadata, metadata, metadata) #1
38
39attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" }
40attributes #1 = { nounwind readnone }
41
42!llvm.dbg.cu = !{!0}
43!llvm.module.flags = !{!17, !18}
44!llvm.ident = !{!19}
45
46!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
47!1 = !DIFile(filename: "pieces.c", directory: "")
48!2 = !{}
49!4 = distinct !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, retainedNodes: !15)
50!5 = !DIFile(filename: "pieces.c", directory: "")
51!6 = !DISubroutineType(types: !7)
52!7 = !{!8, !9}
53!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
54!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "S", line: 1, file: !1, baseType: !10)
55!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !11)
56!11 = !{!12, !14}
57!12 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 1, size: 64, align: 64, file: !1, scope: !10, baseType: !13)
58!13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
59!14 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 1, size: 32, align: 32, offset: 64, file: !1, scope: !10, baseType: !8)
60!15 = !{!16}
61!16 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9)
62!17 = !{i32 2, !"Dwarf Version", i32 4}
63!18 = !{i32 1, !"Debug Info Version", i32 3}
64!19 = !{!"clang version 3.5 "}
65!20 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9)
66!21 = !DILocation(line: 3, scope: !4)
67!22 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9)
68!23 = !DILocation(line: 4, scope: !4)
69!24 = !DIExpression(DW_OP_LLVM_fragment, 0, 64)
70!25 = !{}
71!27 = !DIExpression(DW_OP_LLVM_fragment, 64, 32)
72