1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -S -passes=instcombine -instcombine-lower-dbg-declare=0 | FileCheck %s 3 4; In this example, instcombine wants to turn "local" into an i64, since that's 5; how it is stored. It should keep the debug info referring to the alloca when 6; it does the replacement. 7 8; C source: 9; struct Foo { 10; int x, y; 11; }; 12; void escape(const ptr); 13; void f(struct Foo *p) { 14; struct Foo local; 15; *(__int64 *)&local = *(__int64 *)p; 16; escape(&local); 17; } 18 19; ModuleID = '<stdin>' 20source_filename = "t.c" 21target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 22target triple = "x86_64-pc-windows-msvc19.11.25508" 23 24%struct.Foo = type { i32, i32 } 25 26define void @f(ptr %p) !dbg !11 { 27; CHECK-LABEL: @f( 28; CHECK-NEXT: entry: 29; CHECK-NEXT: [[LOCAL:%.*]] = alloca [[STRUCT_FOO:%.*]], align 4 30; CHECK-NEXT: #dbg_declare(ptr [[LOCAL]], [[META22:![0-9]+]], !DIExpression(), [[META23:![0-9]+]]) 31; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[P:%.*]], align 8, !dbg [[DBG24:![0-9]+]], !tbaa [[TBAA25:![0-9]+]] 32; CHECK-NEXT: store i64 [[TMP0]], ptr [[LOCAL]], align 4, !dbg [[DBG29:![0-9]+]], !tbaa [[TBAA25]] 33; CHECK-NEXT: call void @escape(ptr nonnull [[LOCAL]]), !dbg [[DBG30:![0-9]+]] 34; CHECK-NEXT: ret void, !dbg [[DBG31:![0-9]+]] 35; 36entry: 37 %local = alloca %struct.Foo, align 4 38 call void @llvm.dbg.declare(metadata ptr %local, metadata !22, metadata !DIExpression()), !dbg !25 39 %0 = load i64, ptr %p, align 8, !dbg !26, !tbaa !27 40 store i64 %0, ptr %local, align 4, !dbg !32, !tbaa !27 41 call void @escape(ptr %local), !dbg !34 42 ret void, !dbg !35 43} 44 45declare void @llvm.dbg.declare(metadata, metadata, metadata) 46 47declare void @escape(ptr) 48 49!llvm.dbg.cu = !{!0} 50!llvm.module.flags = !{!6, !7, !8, !9} 51!llvm.ident = !{!10} 52 53!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3) 54!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "d7473625866433067a75fd7d03d2abf7") 55!2 = !{} 56!3 = !{!4} 57!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64) 58!5 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) 59!6 = !{i32 2, !"CodeView", i32 1} 60!7 = !{i32 2, !"Debug Info Version", i32 3} 61!8 = !{i32 1, !"wchar_size", i32 2} 62!9 = !{i32 7, !"PIC Level", i32 2} 63!10 = !{!"clang version 6.0.0 "} 64!11 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 5, type: !12, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !20) 65!12 = !DISubroutineType(types: !13) 66!13 = !{null, !14} 67!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64) 68!15 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !1, line: 1, size: 64, elements: !16) 69!16 = !{!17, !19} 70!17 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !15, file: !1, line: 2, baseType: !18, size: 32) 71!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 72!19 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !15, file: !1, line: 2, baseType: !18, size: 32, offset: 32) 73!20 = !{!21, !22} 74!21 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !1, line: 5, type: !14) 75!22 = !DILocalVariable(name: "local", scope: !11, file: !1, line: 6, type: !15) 76!23 = !DILocation(line: 5, column: 20, scope: !11) 77!24 = !DILocation(line: 6, column: 3, scope: !11) 78!25 = !DILocation(line: 6, column: 14, scope: !11) 79!26 = !DILocation(line: 7, column: 24, scope: !11) 80!27 = !{!28, !28, i64 0} 81!28 = !{!"long long", !29, i64 0} 82!29 = !{!"omnipotent char", !30, i64 0} 83!30 = !{!"Simple C/C++ TBAA"} 84!31 = !DILocation(line: 7, column: 3, scope: !11) 85!32 = !DILocation(line: 7, column: 22, scope: !11) 86!33 = !DILocation(line: 8, column: 10, scope: !11) 87!34 = !DILocation(line: 8, column: 3, scope: !11) 88!35 = !DILocation(line: 9, column: 1, scope: !11) 89