1 ; RUN: llc -O0 %s -filetype=obj -o - | llvm-dwarfdump -debug-loc - | FileCheck %s
3 ; rdar://problem/15928306
5 ; Test that we can emit debug info for aggregate values that are split
6 ; up across multiple registers by SROA.
9 ; typedef struct { long int a; int b;} S;
16 ; CHECK: .debug_loc contents:
19 ; CHECK: [0x0000000000000000, 0x[[LTMP3:.*]]): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_reg4 RSI, DW_OP_piece 0x4
20 ; 0x0000000000000006 - 0x0000000000000008: rbp-8, piece 0x8, rax, piece 0x4 )
22 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
23 target triple = "x86_64-apple-macosx10.9.0"
25 ; Function Attrs: nounwind ssp uwtable
26 define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 !dbg !4 {
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
33 ; Function Attrs: nounwind readnone
34 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
36 ; Function Attrs: nounwind readnone
37 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
39 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" }
40 attributes #1 = { nounwind readnone }
43 !llvm.module.flags = !{!17, !18}
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: "")
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)
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)
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)
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)
71 !27 = !DIExpression(DW_OP_LLVM_fragment, 64, 32)