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 = !{!"0x11\0012\00clang version 3.5 \001\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ]
54 !1 = !{!"pieces.c", !""}
57 !4 = !{!"0x2e\00foo\00foo\00\003\000\001\000\006\00256\001\003", !1, !5, !6, null, i32 (i64, i32)* @foo, null, null, !15} ; [ DW_TAG_subprogram ] [line 3] [def] [foo]
58 !5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/pieces.c]
59 !6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
61 !8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
62 !9 = !{!"0x16\00S\001\000\000\000\000", !1, null, !10} ; [ DW_TAG_typedef ] [S] [line 1, size 0, align 0, offset 0] [from ]
63 !10 = !{!"0x13\00\001\00128\0064\000\000\000", !1, null, null, !11, null, null, null} ; [ DW_TAG_structure_type ] [line 1, size 128, align 64, offset 0] [def] [from ]
65 !12 = !{!"0xd\00a\001\0064\0064\000\000", !1, !10, !13} ; [ DW_TAG_member ] [a] [line 1, size 64, align 64, offset 0] [from long int]
66 !13 = !{!"0x24\00long int\000\0064\0064\000\000\005", null, null} ; [ DW_TAG_base_type ] [long int] [line 0, size 64, align 64, offset 0, enc DW_ATE_signed]
67 !14 = !{!"0xd\00b\001\0032\0032\0064\000", !1, !10, !8} ; [ DW_TAG_member ] [b] [line 1, size 32, align 32, offset 64] [from int]
69 !16 = !{!"0x101\00s\0016777219\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [s] [line 3]
70 !17 = !{i32 2, !"Dwarf Version", i32 4}
71 !18 = !{i32 1, !"Debug Info Version", i32 2}
72 !19 = !{!"clang version 3.5 "}
73 !20 = !{!"0x101\00s\0016777219\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [s] [line 3]
74 !21 = !{i32 3, i32 0, !4, null}
75 !22 = !{!"0x101\00s\0016777219\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [s] [line 3]
76 !23 = !{i32 4, i32 0, !4, null}
77 !24 = !{!"0x102\00147\000\008"} ; [ DW_TAG_expression ] [DW_OP_piece 0 8] [piece, size 8, offset 0]
79 !27 = !{!"0x102\00147\008\004"} ; [ DW_TAG_expression ] [DW_OP_piece 8 4] [piece, size 4, offset 8]