1 ; RUN: llc -O0 %s -filetype=obj -o %t.o
2 ; RUN: llvm-dwarfdump -debug-dump=loc %t.o | FileCheck %s
4 ; rdar://problem/15928306
6 ; Test that we can emit debug info for aggregate values that are split
7 ; up across multiple registers by SROA.
10 ; typedef struct { long int a; int b;} S;
17 ; CHECK: .debug_loc contents:
20 ; 0x0000000000000000 - 0x0000000000000006: rdi, piece 0x00000008, rsi, piece 0x00000004
21 ; CHECK: Beginning address offset: 0x0000000000000000
22 ; CHECK: Ending address offset: [[LTMP3:.*]]
23 ; CHECK: Location description: 55 93 08 54 93 04
24 ; 0x0000000000000006 - 0x0000000000000008: rbp-8, piece 0x00000008, rax, piece 0x00000004 )
25 ; CHECK: Beginning address offset: [[LTMP3]]
26 ; CHECK: Ending address offset: [[END:.*]]
27 ; CHECK: Location description: 76 78 93 08 54 93 04
29 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
30 target triple = "x86_64-apple-macosx10.9.0"
32 ; Function Attrs: nounwind ssp uwtable
33 define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 {
35 call void @llvm.dbg.value(metadata i64 %s.coerce0, i64 0, metadata !20, metadata !24), !dbg !21
36 call void @llvm.dbg.value(metadata i32 %s.coerce1, i64 0, metadata !22, metadata !27), !dbg !21
37 ret i32 %s.coerce1, !dbg !23
40 ; Function Attrs: nounwind readnone
41 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
43 ; Function Attrs: nounwind readnone
44 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
46 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" }
47 attributes #1 = { nounwind readnone }
50 !llvm.module.flags = !{!17, !18}
53 !0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
54 !1 = !DIFile(filename: "pieces.c", directory: "")
57 !4 = !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !1, scope: !5, type: !6, function: i32 (i64, i32)* @foo, variables: !15)
58 !5 = !DIFile(filename: "pieces.c", directory: "")
59 !6 = !DISubroutineType(types: !7)
61 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
62 !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "S", line: 1, file: !1, baseType: !10)
63 !10 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !11)
65 !12 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 1, size: 64, align: 64, file: !1, scope: !10, baseType: !13)
66 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
67 !14 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 1, size: 32, align: 32, offset: 64, file: !1, scope: !10, baseType: !8)
69 !16 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9)
70 !17 = !{i32 2, !"Dwarf Version", i32 4}
71 !18 = !{i32 1, !"Debug Info Version", i32 3}
72 !19 = !{!"clang version 3.5 "}
73 !20 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9)
74 !21 = !DILocation(line: 3, scope: !4)
75 !22 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9)
76 !23 = !DILocation(line: 4, scope: !4)
77 !24 = !DIExpression(DW_OP_bit_piece, 0, 64)
79 !27 = !DIExpression(DW_OP_bit_piece, 64, 32)