1 ; RUN: llc -O0 %s -filetype=obj -o %t.o 2 ; RUN: llvm-dwarfdump -debug-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 ; CHECK: [0x0000000000000000, 0x[[LTMP3:.*]]): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_reg4 RSI, DW_OP_piece 0x4 21 ; 0x0000000000000006 - 0x0000000000000008: rbp-8, piece 0x8, rax, piece 0x4 ) 22 ; CHECK: [0x[[LTMP3]], {{.*}}): DW_OP_breg6 RBP-8, DW_OP_piece 0x8, DW_OP_reg4 RSI, DW_OP_piece 0x4 23 24 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 25 target triple = "x86_64-apple-macosx10.9.0" 26 27 ; Function Attrs: nounwind ssp uwtable 28 define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 !dbg !4 { 29 entry: 30 call void @llvm.dbg.value(metadata i64 %s.coerce0, metadata !20, metadata !24), !dbg !21 31 call void @llvm.dbg.value(metadata i32 %s.coerce1, metadata !22, metadata !27), !dbg !21 32 ret i32 %s.coerce1, !dbg !23 33 } 34 35 ; Function Attrs: nounwind readnone 36 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 37 38 ; Function Attrs: nounwind readnone 39 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 40 41 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" } 42 attributes #1 = { nounwind readnone } 43 44 !llvm.dbg.cu = !{!0} 45 !llvm.module.flags = !{!17, !18} 46 !llvm.ident = !{!19} 47 48 !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) 49 !1 = !DIFile(filename: "pieces.c", directory: "") 50 !2 = !{} 51 !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) 52 !5 = !DIFile(filename: "pieces.c", directory: "") 53 !6 = !DISubroutineType(types: !7) 54 !7 = !{!8, !9} 55 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 56 !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "S", line: 1, file: !1, baseType: !10) 57 !10 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !11) 58 !11 = !{!12, !14} 59 !12 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 1, size: 64, align: 64, file: !1, scope: !10, baseType: !13) 60 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 61 !14 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 1, size: 32, align: 32, offset: 64, file: !1, scope: !10, baseType: !8) 62 !15 = !{!16} 63 !16 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 64 !17 = !{i32 2, !"Dwarf Version", i32 4} 65 !18 = !{i32 1, !"Debug Info Version", i32 3} 66 !19 = !{!"clang version 3.5 "} 67 !20 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 68 !21 = !DILocation(line: 3, scope: !4) 69 !22 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 70 !23 = !DILocation(line: 4, scope: !4) 71 !24 = !DIExpression(DW_OP_LLVM_fragment, 0, 64) 72 !25 = !{} 73 !27 = !DIExpression(DW_OP_LLVM_fragment, 64, 32) 74
