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 29 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 30 target triple = "x86_64-apple-macosx10.9.0" 31 32 ; Function Attrs: nounwind ssp uwtable 33 define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 !dbg !4 { 34 entry: 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 41 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 42 43 ; Function Attrs: nounwind readnone 44 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 45 46 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" } 47 attributes #1 = { nounwind readnone } 48 49 !llvm.dbg.cu = !{!0} 50 !llvm.module.flags = !{!17, !18} 51 !llvm.ident = !{!19} 52 53 !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) 54 !1 = !DIFile(filename: "pieces.c", directory: "") 55 !2 = !{} 56 !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, variables: !15) 57 !5 = !DIFile(filename: "pieces.c", directory: "") 58 !6 = !DISubroutineType(types: !7) 59 !7 = !{!8, !9} 60 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 61 !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "S", line: 1, file: !1, baseType: !10) 62 !10 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !11) 63 !11 = !{!12, !14} 64 !12 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 1, size: 64, align: 64, file: !1, scope: !10, baseType: !13) 65 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 66 !14 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 1, size: 32, align: 32, offset: 64, file: !1, scope: !10, baseType: !8) 67 !15 = !{!16} 68 !16 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 69 !17 = !{i32 2, !"Dwarf Version", i32 4} 70 !18 = !{i32 1, !"Debug Info Version", i32 3} 71 !19 = !{!"clang version 3.5 "} 72 !20 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 73 !21 = !DILocation(line: 3, scope: !4) 74 !22 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) 75 !23 = !DILocation(line: 4, scope: !4) 76 !24 = !DIExpression(DW_OP_bit_piece, 0, 64) 77 !25 = !{} 78 !27 = !DIExpression(DW_OP_bit_piece, 64, 32) 79
