; RUN: opt %s -S -passes=sroa -o - | FileCheck %s ; RUN: opt --try-experimental-debuginfo-iterators %s -S -passes=sroa -o - | FileCheck %s ;; $ cat test.cpp ;; class c { ;; float b[4]; ;; }; ;; c fn1(); ;; void d() { ;; c a[3]; ;; a[2] = fn1(); ;; } ;; ;; Generated by grabbing IR before sroa in: ;; $ clang++ -O2 -g -c test.cpp -Xclang -fexperimental-assignment-tracking ;; ;; Check that when the memcpy to fragment(256, 128) is split into two 2xfloat ;; stores, the dbg.assign is split into two with fragment(256, 64) & ;; fragment(320, 64). Ensure that only the value-expression gets fragment info; ;; that the address-expression remains untouched. ; CHECK: %call = call ; CHECK-NEXT: %0 = extractvalue { <2 x float>, <2 x float> } %call, 0 ; CHECK-NEXT: %1 = extractvalue { <2 x float>, <2 x float> } %call, 1 ; CHECK-NEXT: call void @llvm.dbg.value(metadata <2 x float> %0, metadata ![[var:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 256, 64)) ; CHECK-NEXT: call void @llvm.dbg.value(metadata <2 x float> %1, metadata ![[var]], metadata !DIExpression(DW_OP_LLVM_fragment, 320, 64)) %class.c = type { [4 x float] } ; Function Attrs: uwtable define dso_local void @_Z1dv() #0 !dbg !7 { entry: %a = alloca [3 x %class.c], align 16, !DIAssignID !22 call void @llvm.dbg.assign(metadata i1 undef, metadata !11, metadata !DIExpression(), metadata !22, metadata ptr %a, metadata !DIExpression()), !dbg !23 %ref.tmp = alloca %class.c, align 4 %0 = bitcast ptr %a to ptr, !dbg !24 call void @llvm.lifetime.start.p0i8(i64 48, ptr %0) #4, !dbg !24 %1 = bitcast ptr %ref.tmp to ptr, !dbg !25 call void @llvm.lifetime.start.p0i8(i64 16, ptr %1) #4, !dbg !25 %call = call { <2 x float>, <2 x float> } @_Z3fn1v(), !dbg !25 %coerce.dive = getelementptr inbounds %class.c, ptr %ref.tmp, i32 0, i32 0, !dbg !25 %2 = bitcast ptr %coerce.dive to ptr, !dbg !25 %3 = getelementptr inbounds { <2 x float>, <2 x float> }, ptr %2, i32 0, i32 0, !dbg !25 %4 = extractvalue { <2 x float>, <2 x float> } %call, 0, !dbg !25 store <2 x float> %4, ptr %3, align 4, !dbg !25 %5 = getelementptr inbounds { <2 x float>, <2 x float> }, ptr %2, i32 0, i32 1, !dbg !25 %6 = extractvalue { <2 x float>, <2 x float> } %call, 1, !dbg !25 store <2 x float> %6, ptr %5, align 4, !dbg !25 %arrayidx = getelementptr inbounds [3 x %class.c], ptr %a, i64 0, i64 2, !dbg !26 %7 = bitcast ptr %arrayidx to ptr, !dbg !27 %8 = bitcast ptr %ref.tmp to ptr, !dbg !27 call void @llvm.memcpy.p0i8.p0i8.i64(ptr align 16 %7, ptr align 4 %8, i64 16, i1 false), !dbg !27, !DIAssignID !32 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 %9 = bitcast ptr %ref.tmp to ptr, !dbg !26 call void @llvm.lifetime.end.p0i8(i64 16, ptr %9) #4, !dbg !26 %10 = bitcast ptr %a to ptr, !dbg !33 call void @llvm.lifetime.end.p0i8(i64 48, ptr %10) #4, !dbg !33 ret void, !dbg !33 } ; Function Attrs: argmemonly nofree nosync nounwind willreturn declare void @llvm.lifetime.start.p0i8(i64 immarg, ptr nocapture) #1 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 declare !dbg !34 dso_local { <2 x float>, <2 x float> } @_Z3fn1v() #3 ; Function Attrs: argmemonly nofree nosync nounwind willreturn declare void @llvm.memcpy.p0i8.p0i8.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1 ; Function Attrs: argmemonly nofree nosync nounwind willreturn declare void @llvm.lifetime.end.p0i8(i64 immarg, ptr nocapture) #1 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #2 !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!3, !4, !5, !1000} !llvm.ident = !{!6} !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) !1 = !DIFile(filename: "reduce.cpp", directory: "/") !2 = !{} !3 = !{i32 7, !"Dwarf Version", i32 4} !4 = !{i32 2, !"Debug Info Version", i32 3} !5 = !{i32 1, !"wchar_size", i32 4} !6 = !{!"clang version 12.0.0"} !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) !8 = !DISubroutineType(types: !9) !9 = !{null} !10 = !{!11} !11 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 6, type: !12) !12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 384, elements: !20) !13 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "c", file: !1, line: 1, size: 128, flags: DIFlagTypePassByValue, elements: !14, identifier: "_ZTS1c") !14 = !{!15} !15 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !13, file: !1, line: 2, baseType: !16, size: 128) !16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, size: 128, elements: !18) !17 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) !18 = !{!19} !19 = !DISubrange(count: 4) !20 = !{!21} !21 = !DISubrange(count: 3) !22 = distinct !DIAssignID() !23 = !DILocation(line: 0, scope: !7) !24 = !DILocation(line: 6, column: 3, scope: !7) !25 = !DILocation(line: 7, column: 10, scope: !7) !26 = !DILocation(line: 7, column: 3, scope: !7) !27 = !DILocation(line: 7, column: 8, scope: !7) !32 = distinct !DIAssignID() !33 = !DILocation(line: 8, column: 1, scope: !7) !34 = !DISubprogram(name: "fn1", linkageName: "_Z3fn1v", scope: !1, file: !1, line: 4, type: !35, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) !35 = !DISubroutineType(types: !36) !36 = !{!13} !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}