1; RUN: llc -O0 %s -filetype=obj -o %t.o 2; RUN: llvm-dwarfdump -debug-dump=loc %t.o | FileCheck %s 3; 4; rdar://problem/15928306 5; 6; Test that we can emit debug info for aggregate values that are split 7; up across multiple registers by SROA. 8; 9; // Compile with -O1. 10; typedef struct { long int a; int b;} S; 11; 12; int foo(S s) { 13; return s.b; 14; } 15; 16; 17; CHECK: .debug_loc contents: 18; 19 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 28 29target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 30target triple = "x86_64-apple-macosx10.9.0" 31 32; Function Attrs: nounwind ssp uwtable 33define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 { 34entry: 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 38} 39 40; Function Attrs: nounwind readnone 41declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 42 43; Function Attrs: nounwind readnone 44declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 45 46attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" } 47attributes #1 = { nounwind readnone } 48 49!llvm.dbg.cu = !{!0} 50!llvm.module.flags = !{!17, !18} 51!llvm.ident = !{!19} 52 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", !""} 55!2 = !{} 56!3 = !{!4} 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 ] 60!7 = !{!8, !9} 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 ] 64!11 = !{!12, !14} 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] 68!15 = !{!16} 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 = !MDLocation(line: 3, scope: !4) 75!22 = !{!"0x101\00s\0016777219\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [s] [line 3] 76!23 = !MDLocation(line: 4, scope: !4) 77!24 = !{!"0x102\00147\000\008"} ; [ DW_TAG_expression ] [DW_OP_piece 0 8] [piece, size 8, offset 0] 78!25 = !{} 79!27 = !{!"0x102\00147\008\004"} ; [ DW_TAG_expression ] [DW_OP_piece 8 4] [piece, size 4, offset 8] 80