1; RUN: llc %s -filetype=obj -o - | llvm-dwarfdump -v - | 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] ( 20; CHECK-NEXT: [0x0000000000000000, 0x0000000000000004): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_piece 0x4, DW_OP_reg4 RSI, DW_OP_piece 0x4 21; CHECK-NEXT: [0x0000000000000004, 0x0000000000000008): DW_OP_reg5 RDI, DW_OP_piece 0x8, DW_OP_piece 0x4, DW_OP_reg4 RSI, DW_OP_piece 0x4) 22; CHECK-NEXT: DW_AT_name {{.*}}"outer" 23; CHECK: DW_TAG_variable 24; CHECK-NEXT: DW_AT_location {{.*}}(DW_OP_reg4 RSI, DW_OP_piece 0x4) 25; CHECK-NEXT: "i1" 26 27; ModuleID = '/Volumes/Data/llvm/test/DebugInfo/X86/sroasplit-2.ll' 28target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 29target triple = "x86_64-apple-macosx10.9.0" 30 31; Function Attrs: nounwind ssp uwtable 32define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 { 33 call void @llvm.dbg.value(metadata i64 %outer.coerce0, metadata !24, metadata !25), !dbg !26 34 call void @llvm.dbg.declare(metadata !{null}, metadata !27, metadata !28), !dbg !26 35 call void @llvm.dbg.value(metadata i64 %outer.coerce1, metadata !29, metadata !30), !dbg !26 36 call void @llvm.dbg.declare(metadata !{null}, metadata !31, metadata !32), !dbg !26 37 ; The 'trunc' generates no extra code, thus i1 is visible throughout its scope. 38 %outer.sroa.1.8.extract.trunc = trunc i64 %outer.coerce1 to i32, !dbg !33 39 call void @llvm.dbg.value(metadata i32 %outer.sroa.1.8.extract.trunc, metadata !34, metadata !35), !dbg !33 40 %outer.sroa.1.12.extract.shift = lshr i64 %outer.coerce1, 32, !dbg !33 41 %outer.sroa.1.12.extract.trunc = trunc i64 %outer.sroa.1.12.extract.shift to i32, !dbg !33 42 call void @llvm.dbg.value(metadata i64 %outer.sroa.1.12.extract.shift, metadata !34, metadata !35), !dbg !33 43 call void @llvm.dbg.value(metadata i32 %outer.sroa.1.12.extract.trunc, metadata !34, metadata !35), !dbg !33 44 call void @llvm.dbg.declare(metadata !{null}, metadata !34, metadata !35), !dbg !33 45 ret i32 %outer.sroa.1.8.extract.trunc, !dbg !36 46} 47 48; Function Attrs: nounwind readnone 49declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 50 51; Function Attrs: nounwind 52declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #2 53 54; Function Attrs: nounwind readnone 55declare void @llvm.dbg.value(metadata, metadata, metadata) #1 56 57attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" } 58attributes #1 = { nounwind readnone } 59attributes #2 = { nounwind } 60 61!llvm.dbg.cu = !{!0} 62!llvm.module.flags = !{!21, !22} 63!llvm.ident = !{!23} 64 65!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) 66!1 = !DIFile(filename: "sroasplit-2.c", directory: "") 67!2 = !{} 68!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, retainedNodes: !2) 69!5 = !DIFile(filename: "sroasplit-2.c", directory: "") 70!6 = !DISubroutineType(types: !7) 71!7 = !{!8, !9} 72!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 73!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) 74!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11) 75!11 = !{!12} 76!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13) 77!13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19) 78!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) 79!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16) 80!16 = !{!17, !18} 81!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) 82!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8) 83!19 = !{!20} 84!20 = !DISubrange(count: 2) 85!21 = !{i32 2, !"Dwarf Version", i32 2} 86!22 = !{i32 1, !"Debug Info Version", i32 3} 87!23 = !{!"clang version 3.5.0 "} 88!24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 89!25 = !DIExpression(DW_OP_LLVM_fragment, 0, 64) 90!26 = !DILocation(line: 10, scope: !4) 91!27 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 92!28 = !DIExpression(DW_OP_LLVM_fragment, 64, 64) 93!29 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 94!30 = !DIExpression(DW_OP_LLVM_fragment, 96, 32) 95!31 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 96!32 = !DIExpression(DW_OP_LLVM_fragment, 64, 32) 97!33 = !DILocation(line: 11, scope: !4) 98!34 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) 99!35 = !DIExpression(DW_OP_LLVM_fragment, 0, 32) 100!36 = !DILocation(line: 12, scope: !4) 101