1; RUN: llc -O0 %s -filetype=obj -o - | llvm-dwarfdump -debug-loc - | FileCheck %s 2; RUN: llc --try-experimental-debuginfo-iterators -O0 %s -filetype=obj -o - | llvm-dwarfdump -debug-loc - | 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; CHECK: (0x0000000000000006, 0x[[LTMP3:.*]]): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_reg0 RAX, DW_OP_piece 0x4 21; 0x0000000000000006 - 0x0000000000000008: rbp-8, piece 0x8, rax, piece 0x4 ) 22 23target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 24target triple = "x86_64-apple-macosx10.9.0" 25 26; Function Attrs: nounwind ssp uwtable 27define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 !dbg !4 { 28entry: 29 call void @llvm.dbg.value(metadata i64 %s.coerce0, metadata !20, metadata !24), !dbg !21 30 call void @llvm.dbg.value(metadata i32 %s.coerce1, metadata !22, metadata !27), !dbg !21 31 ret i32 %s.coerce1, !dbg !23 32} 33 34; Function Attrs: nounwind readnone 35declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 36 37; Function Attrs: nounwind readnone 38declare void @llvm.dbg.value(metadata, metadata, metadata) #1 39 40attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" } 41attributes #1 = { nounwind readnone } 42 43!llvm.dbg.cu = !{!0} 44!llvm.module.flags = !{!17, !18} 45!llvm.ident = !{!19} 46 47!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) 48!1 = !DIFile(filename: "pieces.c", directory: "") 49!2 = !{} 50!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) 51!5 = !DIFile(filename: "pieces.c", directory: "") 52!6 = !DISubroutineType(types: !7) 53!7 = !{!8, !9} 54!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 55!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "S", line: 1, file: !1, baseType: !10) 56!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !11) 57!11 = !{!12, !14} 58!12 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 1, size: 64, align: 64, file: !1, scope: !10, baseType: !13) 59!13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 60!14 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 1, size: 32, align: 32, offset: 64, file: !1, scope: !10, baseType: !8) 61!15 = !{!16} 62!16 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 63!17 = !{i32 2, !"Dwarf Version", i32 4} 64!18 = !{i32 1, !"Debug Info Version", i32 3} 65!19 = !{!"clang version 3.5 "} 66!20 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 67!21 = !DILocation(line: 3, scope: !4) 68!22 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 69!23 = !DILocation(line: 4, scope: !4) 70!24 = !DIExpression(DW_OP_LLVM_fragment, 0, 64) 71!25 = !{} 72!27 = !DIExpression(DW_OP_LLVM_fragment, 64, 32) 73