| ; RUN: llc -O0 %s -filetype=obj -o - | llvm-dwarfdump -debug-loc - | FileCheck %s |
| ; |
| ; rdar://problem/15928306 |
| ; |
| ; Test that we can emit debug info for aggregate values that are split |
| ; up across multiple registers by SROA. |
| ; |
| ; // Compile with -O1. |
| ; typedef struct { long int a; int b;} S; |
| ; |
| ; int foo(S s) { |
| ; return s.b; |
| ; } |
| ; |
| ; |
| ; CHECK: .debug_loc contents: |
| ; |
| |
| ; CHECK: (0x0000000000000006, 0x[[LTMP3:.*]]): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_reg0 RAX, DW_OP_piece 0x4 |
| ; 0x0000000000000006 - 0x0000000000000008: rbp-8, piece 0x8, rax, piece 0x4 ) |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.9.0" |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 !dbg !4 { |
| entry: |
| call void @llvm.dbg.value(metadata i64 %s.coerce0, metadata !20, metadata !24), !dbg !21 |
| call void @llvm.dbg.value(metadata i32 %s.coerce1, metadata !22, metadata !27), !dbg !21 |
| ret i32 %s.coerce1, !dbg !23 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!17, !18} |
| !llvm.ident = !{!19} |
| |
| !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) |
| !1 = !DIFile(filename: "pieces.c", directory: "") |
| !2 = !{} |
| !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) |
| !5 = !DIFile(filename: "pieces.c", directory: "") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{!8, !9} |
| !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "S", line: 1, file: !1, baseType: !10) |
| !10 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !11) |
| !11 = !{!12, !14} |
| !12 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 1, size: 64, align: 64, file: !1, scope: !10, baseType: !13) |
| !13 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !14 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 1, size: 32, align: 32, offset: 64, file: !1, scope: !10, baseType: !8) |
| !15 = !{!16} |
| !16 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) |
| !17 = !{i32 2, !"Dwarf Version", i32 4} |
| !18 = !{i32 1, !"Debug Info Version", i32 3} |
| !19 = !{!"clang version 3.5 "} |
| !20 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) |
| !21 = !DILocation(line: 3, scope: !4) |
| !22 = !DILocalVariable(name: "s", line: 3, arg: 1, scope: !4, file: !5, type: !9) |
| !23 = !DILocation(line: 4, scope: !4) |
| !24 = !DIExpression(DW_OP_LLVM_fragment, 0, 64) |
| !25 = !{} |
| !27 = !DIExpression(DW_OP_LLVM_fragment, 64, 32) |