; RUN: opt -passes=sroa -S %s -o - \ ; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" ; RUN: opt --try-experimental-debuginfo-iterators -passes=sroa -S %s -o - \ ; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" ;; Check that the fragments generated in SROA for a split alloca that has a ;; dbg.assign with non-zero-offset fragment are correct. ;; $ cat test.cpp ;; #include ;; ;; struct V3i { long x, y, z; }; ;; void fun() { ;; V3i point = {0, 0, 0}; ;; point.z = 5000; ;; V3i other = {10, 9, 8}; ;; std::memcpy(&point.y, &other.x, sizeof(long) * 2); ;; } ;; $ clang++ -c -O2 -g test.cpp -o - -Xclang -disable-llvm-passes -S -emit-llvm \ ;; | opt -passes=declare-to-assign -S -o - ; CHECK: entry: ;; Allocas have been promoted - the linked dbg.assigns have been removed. ;; | V3i point = {0, 0, 0}; ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 0, metadata ![[point:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)) ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 0, metadata ![[point]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)) ;; point.z = 5000; ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 5000, metadata ![[point]], metadata !DIExpression(DW_OP_LLVM_fragment, 128, 64)) ;; | V3i other = {10, 9, 8}; ;; other is global const: ;; local.other.x = global.other.x ;; local.other.y = global.other.y ;; local.other.z = global.other.z ; CHECK-NEXT: %other.sroa.0.0.copyload = load i64, ptr @__const._Z3funv.other ; CHECK-NEXT: %other.sroa.2.0.copyload = load i64, ptr getelementptr inbounds (i8, ptr @__const._Z3funv.other, i64 8) ; CHECK-NEXT: %other.sroa.3.0.copyload = load i64, ptr getelementptr inbounds (i8, ptr @__const._Z3funv.other, i64 16) ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %other.sroa.0.0.copyload, metadata ![[other:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)) ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %other.sroa.2.0.copyload, metadata ![[other]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)) ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %other.sroa.3.0.copyload, metadata ![[other]], metadata !DIExpression(DW_OP_LLVM_fragment, 128, 64)) ;; | std::memcpy(&point.y, &other.x, sizeof(long) * 2); ;; other is now 3 scalars: ;; point.y = other.x ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %other.sroa.0.0.copyload, metadata ![[point]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)) ;; ;; point.z = other.y ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %other.sroa.2.0.copyload, metadata ![[point]], metadata !DIExpression(DW_OP_LLVM_fragment, 128, 64)) ; CHECK: ![[point]] = !DILocalVariable(name: "point", ; CHECK: ![[other]] = !DILocalVariable(name: "other", source_filename = "test.cpp" target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" %struct.V3i = type { i64, i64, i64 } @__const._Z3funv.other = private unnamed_addr constant %struct.V3i { i64 10, i64 9, i64 8 }, align 8 ; Function Attrs: nounwind uwtable mustprogress define dso_local void @_Z3funv() !dbg !100 { entry: %point = alloca %struct.V3i, align 8, !DIAssignID !112 call void @llvm.dbg.assign(metadata i1 undef, metadata !104, metadata !DIExpression(), metadata !112, metadata ptr %point, metadata !DIExpression()), !dbg !113 %other = alloca %struct.V3i, align 8, !DIAssignID !114 call void @llvm.dbg.assign(metadata i1 undef, metadata !111, metadata !DIExpression(), metadata !114, metadata ptr %other, metadata !DIExpression()), !dbg !113 %0 = bitcast ptr %point to ptr, !dbg !115 %1 = bitcast ptr %point to ptr, !dbg !116 call void @llvm.memset.p0i8.i64(ptr align 8 %1, i8 0, i64 24, i1 false), !dbg !116, !DIAssignID !117 call void @llvm.dbg.assign(metadata i8 0, metadata !104, metadata !DIExpression(), metadata !117, metadata ptr %1, metadata !DIExpression()), !dbg !116 %z = getelementptr inbounds %struct.V3i, ptr %point, i32 0, i32 2, !dbg !118 store i64 5000, ptr %z, align 8, !dbg !119, !DIAssignID !125 call void @llvm.dbg.assign(metadata i64 5000, metadata !104, metadata !DIExpression(DW_OP_LLVM_fragment, 128, 64), metadata !125, metadata ptr %z, metadata !DIExpression()), !dbg !119 %2 = bitcast ptr %other to ptr, !dbg !126 %3 = bitcast ptr %other to ptr, !dbg !127 call void @llvm.memcpy.p0i8.p0i8.i64(ptr align 8 %3, ptr align 8 bitcast (ptr @__const._Z3funv.other to ptr), i64 24, i1 false), !dbg !127, !DIAssignID !128 call void @llvm.dbg.assign(metadata i1 undef, metadata !111, metadata !DIExpression(), metadata !128, metadata ptr %3, metadata !DIExpression()), !dbg !127 %y = getelementptr inbounds %struct.V3i, ptr %point, i32 0, i32 1, !dbg !129 %4 = bitcast ptr %y to ptr, !dbg !130 %x = getelementptr inbounds %struct.V3i, ptr %other, i32 0, i32 0, !dbg !131 %5 = bitcast ptr %x to ptr, !dbg !130 call void @llvm.memcpy.p0i8.p0i8.i64(ptr align 8 %4, ptr align 8 %5, i64 16, i1 false), !dbg !130, !DIAssignID !132 call void @llvm.dbg.assign(metadata i1 undef, metadata !104, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 128), metadata !132, metadata ptr %4, metadata !DIExpression()), !dbg !130 %6 = bitcast ptr %other to ptr, !dbg !133 %7 = bitcast ptr %point to ptr, !dbg !133 ret void, !dbg !133 } declare void @llvm.memset.p0i8.i64(ptr nocapture writeonly, i8, i64, i1 immarg) declare void @llvm.memcpy.p0i8.p0i8.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!96, !97, !98, !1000} !llvm.ident = !{!99} !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, imports: !3, splitDebugInlining: false, nameTableKind: None) !1 = !DIFile(filename: "test.cpp", directory: "/") !2 = !{} !3 = !{!4, !18, !22, !28, !32, !36, !46, !50, !52, !54, !58, !62, !66, !70, !74, !76, !78, !80, !84, !88, !92, !94} !4 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !6, file: !17, line: 75) !5 = !DINamespace(name: "std", scope: null) !6 = !DISubprogram(name: "memchr", scope: !7, file: !7, line: 90, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !7 = !DIFile(filename: "/usr/include/string.h", directory: "") !8 = !DISubroutineType(types: !9) !9 = !{!10, !11, !13, !14} !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64) !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) !12 = !DIDerivedType(tag: DW_TAG_const_type, baseType: null) !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !14 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !15, line: 46, baseType: !16) !15 = !DIFile(filename: "lib/clang/12.0.0/include/stddef.h", directory: "/") !16 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) !17 = !DIFile(filename: "/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/cstring", directory: "") !18 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !19, file: !17, line: 76) !19 = !DISubprogram(name: "memcmp", scope: !7, file: !7, line: 63, type: !20, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !20 = !DISubroutineType(types: !21) !21 = !{!13, !11, !11, !14} !22 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !23, file: !17, line: 77) !23 = !DISubprogram(name: "memcpy", scope: !7, file: !7, line: 42, type: !24, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !24 = !DISubroutineType(types: !25) !25 = !{!10, !26, !27, !14} !26 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !10) !27 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !11) !28 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !29, file: !17, line: 78) !29 = !DISubprogram(name: "memmove", scope: !7, file: !7, line: 46, type: !30, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !30 = !DISubroutineType(types: !31) !31 = !{!10, !10, !11, !14} !32 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !33, file: !17, line: 79) !33 = !DISubprogram(name: "memset", scope: !7, file: !7, line: 60, type: !34, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !34 = !DISubroutineType(types: !35) !35 = !{!10, !10, !13, !14} !36 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !37, file: !17, line: 80) !37 = !DISubprogram(name: "strcat", scope: !7, file: !7, line: 129, type: !38, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !38 = !DISubroutineType(types: !39) !39 = !{!40, !42, !43} !40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !41, size: 64) !41 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) !42 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !40) !43 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !44) !44 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !45, size: 64) !45 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !41) !46 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !47, file: !17, line: 81) !47 = !DISubprogram(name: "strcmp", scope: !7, file: !7, line: 136, type: !48, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !48 = !DISubroutineType(types: !49) !49 = !{!13, !44, !44} !50 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !51, file: !17, line: 82) !51 = !DISubprogram(name: "strcoll", scope: !7, file: !7, line: 143, type: !48, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !52 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !53, file: !17, line: 83) !53 = !DISubprogram(name: "strcpy", scope: !7, file: !7, line: 121, type: !38, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !54 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !55, file: !17, line: 84) !55 = !DISubprogram(name: "strcspn", scope: !7, file: !7, line: 272, type: !56, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !56 = !DISubroutineType(types: !57) !57 = !{!14, !44, !44} !58 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !59, file: !17, line: 85) !59 = !DISubprogram(name: "strerror", scope: !7, file: !7, line: 396, type: !60, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !60 = !DISubroutineType(types: !61) !61 = !{!40, !13} !62 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !63, file: !17, line: 86) !63 = !DISubprogram(name: "strlen", scope: !7, file: !7, line: 384, type: !64, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !64 = !DISubroutineType(types: !65) !65 = !{!14, !44} !66 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !67, file: !17, line: 87) !67 = !DISubprogram(name: "strncat", scope: !7, file: !7, line: 132, type: !68, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !68 = !DISubroutineType(types: !69) !69 = !{!40, !42, !43, !14} !70 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !71, file: !17, line: 88) !71 = !DISubprogram(name: "strncmp", scope: !7, file: !7, line: 139, type: !72, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !72 = !DISubroutineType(types: !73) !73 = !{!13, !44, !44, !14} !74 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !75, file: !17, line: 89) !75 = !DISubprogram(name: "strncpy", scope: !7, file: !7, line: 124, type: !68, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !76 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !77, file: !17, line: 90) !77 = !DISubprogram(name: "strspn", scope: !7, file: !7, line: 276, type: !56, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !78 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !79, file: !17, line: 91) !79 = !DISubprogram(name: "strtok", scope: !7, file: !7, line: 335, type: !38, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !80 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !81, file: !17, line: 92) !81 = !DISubprogram(name: "strxfrm", scope: !7, file: !7, line: 146, type: !82, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !82 = !DISubroutineType(types: !83) !83 = !{!14, !42, !43, !14} !84 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !85, file: !17, line: 93) !85 = !DISubprogram(name: "strchr", scope: !7, file: !7, line: 225, type: !86, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !86 = !DISubroutineType(types: !87) !87 = !{!40, !44, !13} !88 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !89, file: !17, line: 94) !89 = !DISubprogram(name: "strpbrk", scope: !7, file: !7, line: 302, type: !90, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !90 = !DISubroutineType(types: !91) !91 = !{!40, !44, !44} !92 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !93, file: !17, line: 95) !93 = !DISubprogram(name: "strrchr", scope: !7, file: !7, line: 252, type: !86, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !94 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !5, entity: !95, file: !17, line: 96) !95 = !DISubprogram(name: "strstr", scope: !7, file: !7, line: 329, type: !90, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) !96 = !{i32 7, !"Dwarf Version", i32 4} !97 = !{i32 2, !"Debug Info Version", i32 3} !98 = !{i32 1, !"wchar_size", i32 4} !99 = !{!"clang version 12.0.0"} !100 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !1, file: !1, line: 4, type: !101, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !103) !101 = !DISubroutineType(types: !102) !102 = !{null} !103 = !{!104, !111} !104 = !DILocalVariable(name: "point", scope: !100, file: !1, line: 5, type: !105) !105 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "V3i", file: !1, line: 3, size: 192, flags: DIFlagTypePassByValue, elements: !106, identifier: "_ZTS3V3i") !106 = !{!107, !109, !110} !107 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !105, file: !1, line: 3, baseType: !108, size: 64) !108 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed) !109 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !105, file: !1, line: 3, baseType: !108, size: 64, offset: 64) !110 = !DIDerivedType(tag: DW_TAG_member, name: "z", scope: !105, file: !1, line: 3, baseType: !108, size: 64, offset: 128) !111 = !DILocalVariable(name: "other", scope: !100, file: !1, line: 7, type: !105) !112 = distinct !DIAssignID() !113 = !DILocation(line: 0, scope: !100) !114 = distinct !DIAssignID() !115 = !DILocation(line: 5, column: 3, scope: !100) !116 = !DILocation(line: 5, column: 7, scope: !100) !117 = distinct !DIAssignID() !118 = !DILocation(line: 6, column: 9, scope: !100) !119 = !DILocation(line: 6, column: 11, scope: !100) !125 = distinct !DIAssignID() !126 = !DILocation(line: 7, column: 3, scope: !100) !127 = !DILocation(line: 7, column: 7, scope: !100) !128 = distinct !DIAssignID() !129 = !DILocation(line: 8, column: 22, scope: !100) !130 = !DILocation(line: 8, column: 3, scope: !100) !131 = !DILocation(line: 8, column: 32, scope: !100) !132 = distinct !DIAssignID() !133 = !DILocation(line: 9, column: 1, scope: !100) !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}