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1; A by-value struct is a register-indirect value (breg).
2; RUN: llc %s -filetype=asm -o - | FileCheck %s
3
4; CHECK: DW_AT_location
5; CHECK-NEXT: .byte 112
6; 112 = 0x70 = DW_OP_breg0
7
8; rdar://problem/13658587
9;
10; Generated from
11;
12; struct five
13; {
14;   int a;
15;   int b;
16;   int c;
17;   int d;
18;   int e;
19; };
20;
21; int
22; return_five_int (struct five f)
23; {
24;   return f.a;
25; }
26
27target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32:64-S128"
28target triple = "arm64-apple-ios3.0.0"
29
30%struct.five = type { i32, i32, i32, i32, i32 }
31
32; Function Attrs: nounwind ssp
33define i32 @return_five_int(%struct.five* %f) #0 {
34entry:
35  call void @llvm.dbg.declare(metadata !{%struct.five* %f}, metadata !17), !dbg !18
36  %a = getelementptr inbounds %struct.five* %f, i32 0, i32 0, !dbg !19
37  %0 = load i32* %a, align 4, !dbg !19
38  ret i32 %0, !dbg !19
39}
40
41; Function Attrs: nounwind readnone
42declare void @llvm.dbg.declare(metadata, metadata) #1
43
44attributes #0 = { nounwind ssp }
45attributes #1 = { nounwind readnone }
46
47!llvm.dbg.cu = !{!0}
48!llvm.module.flags = !{!16, !20}
49
50!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"LLVM version 3.4 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [struct_by_value.c] [DW_LANG_C99]
51!1 = metadata !{metadata !"struct_by_value.c", metadata !""}
52!2 = metadata !{}
53!3 = metadata !{metadata !4}
54!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"return_five_int", metadata !"return_five_int", metadata !"", i32 13, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (%struct.five*)* @return_five_int, null, null, metadata !2, i32 14} ; [ DW_TAG_subprogram ] [line 13] [def] [scope 14] [return_five_int]
55!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [struct_by_value.c]
56!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
57!7 = metadata !{metadata !8, metadata !9}
58!8 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
59!9 = metadata !{i32 786451, metadata !1, null, metadata !"five", i32 1, i64 160, i64 32, i32 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [five] [line 1, size 160, align 32, offset 0] [def] [from ]
60!10 = metadata !{metadata !11, metadata !12, metadata !13, metadata !14, metadata !15}
61!11 = metadata !{i32 786445, metadata !1, metadata !9, metadata !"a", i32 3, i64 32, i64 32, i64 0, i32 0, metadata !8} ; [ DW_TAG_member ] [a] [line 3, size 32, align 32, offset 0] [from int]
62!12 = metadata !{i32 786445, metadata !1, metadata !9, metadata !"b", i32 4, i64 32, i64 32, i64 32, i32 0, metadata !8} ; [ DW_TAG_member ] [b] [line 4, size 32, align 32, offset 32] [from int]
63!13 = metadata !{i32 786445, metadata !1, metadata !9, metadata !"c", i32 5, i64 32, i64 32, i64 64, i32 0, metadata !8} ; [ DW_TAG_member ] [c] [line 5, size 32, align 32, offset 64] [from int]
64!14 = metadata !{i32 786445, metadata !1, metadata !9, metadata !"d", i32 6, i64 32, i64 32, i64 96, i32 0, metadata !8} ; [ DW_TAG_member ] [d] [line 6, size 32, align 32, offset 96] [from int]
65!15 = metadata !{i32 786445, metadata !1, metadata !9, metadata !"e", i32 7, i64 32, i64 32, i64 128, i32 0, metadata !8} ; [ DW_TAG_member ] [e] [line 7, size 32, align 32, offset 128] [from int]
66!16 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
67!17 = metadata !{i32 786689, metadata !4, metadata !"f", metadata !5, i32 16777229, metadata !9, i32 8192, i32 0} ; [ DW_TAG_arg_variable ] [f] [line 13]
68!18 = metadata !{i32 13, i32 0, metadata !4, null}
69!19 = metadata !{i32 16, i32 0, metadata !4, null}
70!20 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
71