1; RUN: opt %s -S -passes=sroa -o - | FileCheck %s 2; RUN: opt --try-experimental-debuginfo-iterators %s -S -passes=sroa -o - | FileCheck %s 3 4;; $ cat test.cpp 5;; class c { 6;; float b[4]; 7;; }; 8;; c fn1(); 9;; void d() { 10;; c a[3]; 11;; a[2] = fn1(); 12;; } 13;; 14;; Generated by grabbing IR before sroa in: 15;; $ clang++ -O2 -g -c test.cpp -Xclang -fexperimental-assignment-tracking 16;; 17;; Check that when the memcpy to fragment(256, 128) is split into two 2xfloat 18;; stores, the dbg.assign is split into two with fragment(256, 64) & 19;; fragment(320, 64). Ensure that only the value-expression gets fragment info; 20;; that the address-expression remains untouched. 21 22; CHECK: %call = call 23; CHECK-NEXT: %0 = extractvalue { <2 x float>, <2 x float> } %call, 0 24; CHECK-NEXT: %1 = extractvalue { <2 x float>, <2 x float> } %call, 1 25; CHECK-NEXT: #dbg_value(<2 x float> %0, ![[var:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 256, 64), 26; CHECK-NEXT: #dbg_value(<2 x float> %1, ![[var]], !DIExpression(DW_OP_LLVM_fragment, 320, 64), 27 28%class.c = type { [4 x float] } 29 30; Function Attrs: uwtable 31define dso_local void @_Z1dv() #0 !dbg !7 { 32entry: 33 %a = alloca [3 x %class.c], align 16, !DIAssignID !22 34 call void @llvm.dbg.assign(metadata i1 undef, metadata !11, metadata !DIExpression(), metadata !22, metadata ptr %a, metadata !DIExpression()), !dbg !23 35 %ref.tmp = alloca %class.c, align 4 36 %0 = bitcast ptr %a to ptr, !dbg !24 37 call void @llvm.lifetime.start.p0(i64 48, ptr %0) #4, !dbg !24 38 %1 = bitcast ptr %ref.tmp to ptr, !dbg !25 39 call void @llvm.lifetime.start.p0(i64 16, ptr %1) #4, !dbg !25 40 %call = call { <2 x float>, <2 x float> } @_Z3fn1v(), !dbg !25 41 %coerce.dive = getelementptr inbounds %class.c, ptr %ref.tmp, i32 0, i32 0, !dbg !25 42 %2 = bitcast ptr %coerce.dive to ptr, !dbg !25 43 %3 = getelementptr inbounds { <2 x float>, <2 x float> }, ptr %2, i32 0, i32 0, !dbg !25 44 %4 = extractvalue { <2 x float>, <2 x float> } %call, 0, !dbg !25 45 store <2 x float> %4, ptr %3, align 4, !dbg !25 46 %5 = getelementptr inbounds { <2 x float>, <2 x float> }, ptr %2, i32 0, i32 1, !dbg !25 47 %6 = extractvalue { <2 x float>, <2 x float> } %call, 1, !dbg !25 48 store <2 x float> %6, ptr %5, align 4, !dbg !25 49 %arrayidx = getelementptr inbounds [3 x %class.c], ptr %a, i64 0, i64 2, !dbg !26 50 %7 = bitcast ptr %arrayidx to ptr, !dbg !27 51 %8 = bitcast ptr %ref.tmp to ptr, !dbg !27 52 call void @llvm.memcpy.p0.p0.i64(ptr align 16 %7, ptr align 4 %8, i64 16, i1 false), !dbg !27, !DIAssignID !32 53 call void @llvm.dbg.assign(metadata i1 undef, metadata !11, metadata !DIExpression(DW_OP_LLVM_fragment, 256, 128), metadata !32, metadata ptr %7, metadata !DIExpression()), !dbg !23 54 %9 = bitcast ptr %ref.tmp to ptr, !dbg !26 55 call void @llvm.lifetime.end.p0(i64 16, ptr %9) #4, !dbg !26 56 %10 = bitcast ptr %a to ptr, !dbg !33 57 call void @llvm.lifetime.end.p0(i64 48, ptr %10) #4, !dbg !33 58 ret void, !dbg !33 59} 60 61; Function Attrs: argmemonly nofree nosync nounwind willreturn 62declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1 63 64; Function Attrs: nofree nosync nounwind readnone speculatable willreturn 65declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 66 67declare !dbg !34 dso_local { <2 x float>, <2 x float> } @_Z3fn1v() #3 68 69; Function Attrs: argmemonly nofree nosync nounwind willreturn 70declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1 71 72; Function Attrs: argmemonly nofree nosync nounwind willreturn 73declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1 74 75; Function Attrs: nofree nosync nounwind readnone speculatable willreturn 76declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #2 77 78!llvm.dbg.cu = !{!0} 79!llvm.module.flags = !{!3, !4, !5, !1000} 80!llvm.ident = !{!6} 81 82!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 83!1 = !DIFile(filename: "reduce.cpp", directory: "/") 84!2 = !{} 85!3 = !{i32 7, !"Dwarf Version", i32 4} 86!4 = !{i32 2, !"Debug Info Version", i32 3} 87!5 = !{i32 1, !"wchar_size", i32 4} 88!6 = !{!"clang version 12.0.0"} 89!7 = distinct !DISubprogram(name: "d", linkageName: "_Z1dv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10) 90!8 = !DISubroutineType(types: !9) 91!9 = !{null} 92!10 = !{!11} 93!11 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 6, type: !12) 94!12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 384, elements: !20) 95!13 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "c", file: !1, line: 1, size: 128, flags: DIFlagTypePassByValue, elements: !14, identifier: "_ZTS1c") 96!14 = !{!15} 97!15 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !13, file: !1, line: 2, baseType: !16, size: 128) 98!16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, size: 128, elements: !18) 99!17 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) 100!18 = !{!19} 101!19 = !DISubrange(count: 4) 102!20 = !{!21} 103!21 = !DISubrange(count: 3) 104!22 = distinct !DIAssignID() 105!23 = !DILocation(line: 0, scope: !7) 106!24 = !DILocation(line: 6, column: 3, scope: !7) 107!25 = !DILocation(line: 7, column: 10, scope: !7) 108!26 = !DILocation(line: 7, column: 3, scope: !7) 109!27 = !DILocation(line: 7, column: 8, scope: !7) 110!32 = distinct !DIAssignID() 111!33 = !DILocation(line: 8, column: 1, scope: !7) 112!34 = !DISubprogram(name: "fn1", linkageName: "_Z3fn1v", scope: !1, file: !1, line: 4, type: !35, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 113!35 = !DISubroutineType(types: !36) 114!36 = !{!13} 115!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true} 116