1; RUN: llc %s -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s 2; 3; // Compile with -O1 4; typedef struct { 5; int a; 6; int b; 7; } Inner; 8; 9; typedef struct { 10; Inner inner[2]; 11; } Outer; 12; 13; int foo(Outer outer) { 14; Inner i1 = outer.inner[1]; 15; return i1.a; 16; } 17; 18; CHECK: DW_TAG_formal_parameter [3] 19; CHECK-NEXT: DW_AT_location [DW_FORM_data4] ([[LOC1:.*]]) 20; CHECK-NEXT: DW_AT_name {{.*}}"outer" 21; CHECK: DW_TAG_variable 22; CHECK-NEXT: DW_AT_location [DW_FORM_data4] ([[LOC2:.*]]) 23; CHECK-NEXT: "i1" 24; 25; CHECK: .debug_loc 26; CHECK: [[LOC1]]: Beginning address offset: 0x0000000000000000 27; CHECK-NEXT: Ending address offset: 0x0000000000000004 28; rdi, piece 0x00000008, piece 0x00000004, rsi, piece 0x00000004 29; CHECK-NEXT: Location description: 55 93 08 93 04 54 93 04 30; This location is split into two ranges with identical locations 31; because it comes from a DBG_VALUE %RSI followed by a DBG_VALUE %ESI. 32; CHECK: Beginning address offset: 0x0000000000000004 33; CHECK-NEXT: Ending address offset: 0x0000000000000008 34; CHECK-NEXT: Location description: 55 93 08 93 04 54 93 04 35; CHECK: [[LOC2]]: Beginning address offset: 0x0000000000000004 36; CHECK-NEXT: Ending address offset: 0x0000000000000008 37; rsi, piece 0x00000004 38; CHECK-NEXT: Location description: 54 93 04 39 40; 41; ModuleID = '/Volumes/Data/llvm/test/DebugInfo/X86/sroasplit-2.ll' 42target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 43target triple = "x86_64-apple-macosx10.9.0" 44 45; Function Attrs: nounwind ssp uwtable 46define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 { 47 call void @llvm.dbg.value(metadata i64 %outer.coerce0, i64 0, metadata !24, metadata !25), !dbg !26 48 call void @llvm.dbg.declare(metadata !{null}, metadata !27, metadata !28), !dbg !26 49 call void @llvm.dbg.value(metadata i64 %outer.coerce1, i64 0, metadata !29, metadata !30), !dbg !26 50 call void @llvm.dbg.declare(metadata !{null}, metadata !31, metadata !32), !dbg !26 51 %outer.sroa.1.8.extract.trunc = trunc i64 %outer.coerce1 to i32, !dbg !33 52 call void @llvm.dbg.value(metadata i32 %outer.sroa.1.8.extract.trunc, i64 0, metadata !34, metadata !35), !dbg !33 53 %outer.sroa.1.12.extract.shift = lshr i64 %outer.coerce1, 32, !dbg !33 54 %outer.sroa.1.12.extract.trunc = trunc i64 %outer.sroa.1.12.extract.shift to i32, !dbg !33 55 call void @llvm.dbg.value(metadata i64 %outer.sroa.1.12.extract.shift, i64 0, metadata !34, metadata !35), !dbg !33 56 call void @llvm.dbg.value(metadata i32 %outer.sroa.1.12.extract.trunc, i64 0, metadata !34, metadata !35), !dbg !33 57 call void @llvm.dbg.declare(metadata !{null}, metadata !34, metadata !35), !dbg !33 58 ret i32 %outer.sroa.1.8.extract.trunc, !dbg !36 59} 60 61; Function Attrs: nounwind readnone 62declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 63 64; Function Attrs: nounwind 65declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2 66 67; Function Attrs: nounwind readnone 68declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 69 70attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" } 71attributes #1 = { nounwind readnone } 72attributes #2 = { nounwind } 73 74!llvm.dbg.cu = !{!0} 75!llvm.module.flags = !{!21, !22} 76!llvm.ident = !{!23} 77 78!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 79!1 = !DIFile(filename: "sroasplit-2.c", directory: "") 80!2 = !{} 81!4 = distinct !DISubprogram(name: "foo", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, variables: !2) 82!5 = !DIFile(filename: "sroasplit-2.c", directory: "") 83!6 = !DISubroutineType(types: !7) 84!7 = !{!8, !9} 85!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 86!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) 87!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11) 88!11 = !{!12} 89!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13) 90!13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19) 91!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) 92!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16) 93!16 = !{!17, !18} 94!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) 95!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8) 96!19 = !{!20} 97!20 = !DISubrange(count: 2) 98!21 = !{i32 2, !"Dwarf Version", i32 2} 99!22 = !{i32 1, !"Debug Info Version", i32 3} 100!23 = !{!"clang version 3.5.0 "} 101!24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 102!25 = !DIExpression(DW_OP_bit_piece, 0, 64) 103!26 = !DILocation(line: 10, scope: !4) 104!27 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 105!28 = !DIExpression(DW_OP_bit_piece, 64, 64) 106!29 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 107!30 = !DIExpression(DW_OP_bit_piece, 96, 32) 108!31 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 109!32 = !DIExpression(DW_OP_bit_piece, 64, 32) 110!33 = !DILocation(line: 11, scope: !4) 111!34 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) 112!35 = !DIExpression(DW_OP_bit_piece, 0, 32) 113!36 = !DILocation(line: 12, scope: !4) 114