; RUN: opt -passes=mldst-motion -S %s -o - \ ; RUN: | FileCheck %s ; RUN: opt --try-experimental-debuginfo-iterators -passes=mldst-motion -S %s -o - \ ; RUN: | FileCheck %s ;; $ cat test.cpp ;; int cond; ;; void esc(int*); ;; void fun() { ;; int a[4]; ;; if (cond) ;; a[1] = 1; ;; else ;; a[1] = 2; ;; esc(a); ;; } ;; ;; ;; mldst-motion will merge and sink the stores in if.then and if.else into ;; if.end. Ensure the merged store has a DIAssignID linking it to the two ;; dbg.assign intrinsics which have been left in their original blocks. ; CHECK: if.then: ; CHECK-NEXT: call void @llvm.dbg.assign(metadata i32 1,{{.+}}, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32), metadata ![[ID:[0-9]+]], metadata ptr %1, metadata !DIExpression()) ; CHECK: if.else: ; CHECK-NEXT: call void @llvm.dbg.assign(metadata i32 2,{{.+}}, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32), metadata ![[ID]], metadata ptr %1, metadata !DIExpression()) ; CHECK: if.end: ; CHECK: store i32 %.sink, ptr %1, align 4{{.+}}, !DIAssignID ![[ID]] @cond = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0 define dso_local void @_Z3funv() !dbg !11 { entry: %a = alloca [4 x i32], align 16, !DIAssignID !19 call void @llvm.dbg.assign(metadata i1 undef, metadata !15, metadata !DIExpression(), metadata !19, metadata ptr %a, metadata !DIExpression()), !dbg !20 call void @llvm.lifetime.start.p0i8(i64 16, ptr nonnull %a) #4, !dbg !21 %0 = load i32, i32* @cond, align 4, !dbg !22 %tobool.not = icmp eq i32 %0, 0, !dbg !22 br i1 %tobool.not, label %if.else, label %if.then, !dbg !28 if.then: ; preds = %entry %arrayidx = getelementptr inbounds [4 x i32], ptr %a, i64 0, i64 1, !dbg !29 store i32 1, ptr %arrayidx, align 4, !dbg !30, !DIAssignID !31 call void @llvm.dbg.assign(metadata i32 1, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32), metadata !31, metadata ptr %arrayidx, metadata !DIExpression()), !dbg !20 br label %if.end, !dbg !29 if.else: ; preds = %entry %arrayidx1 = getelementptr inbounds [4 x i32], ptr %a, i64 0, i64 1, !dbg !32 store i32 2, ptr %arrayidx1, align 4, !dbg !33, !DIAssignID !34 call void @llvm.dbg.assign(metadata i32 2, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32), metadata !34, metadata ptr %arrayidx1, metadata !DIExpression()), !dbg !20 br label %if.end if.end: ; preds = %if.else, %if.then %arraydecay = getelementptr inbounds [4 x i32], ptr %a, i64 0, i64 0, !dbg !35 call void @_Z3escPi(ptr noundef nonnull %arraydecay), !dbg !36 call void @llvm.lifetime.end.p0i8(i64 16, ptr nonnull %a) #4, !dbg !37 ret void, !dbg !37 } declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) declare !dbg !38 dso_local void @_Z3escPi(i32* noundef) declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) !llvm.dbg.cu = !{!2} !llvm.module.flags = !{!6, !7, !8, !9, !1000} !llvm.ident = !{!10} !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) !1 = distinct !DIGlobalVariable(name: "cond", scope: !2, file: !3, line: 1, type: !5, isLocal: false, isDefinition: true) !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None) !3 = !DIFile(filename: "test.cpp", directory: "/") !4 = !{!0} !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !6 = !{i32 7, !"Dwarf Version", i32 5} !7 = !{i32 2, !"Debug Info Version", i32 3} !8 = !{i32 1, !"wchar_size", i32 4} !9 = !{i32 7, !"uwtable", i32 1} !10 = !{!"clang version 14.0.0"} !11 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !3, file: !3, line: 3, type: !12, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14) !12 = !DISubroutineType(types: !13) !13 = !{null} !14 = !{!15} !15 = !DILocalVariable(name: "a", scope: !11, file: !3, line: 4, type: !16) !16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !5, size: 128, elements: !17) !17 = !{!18} !18 = !DISubrange(count: 4) !19 = distinct !DIAssignID() !20 = !DILocation(line: 0, scope: !11) !21 = !DILocation(line: 4, column: 3, scope: !11) !22 = !DILocation(line: 5, column: 7, scope: !23) !23 = distinct !DILexicalBlock(scope: !11, file: !3, line: 5, column: 7) !28 = !DILocation(line: 5, column: 7, scope: !11) !29 = !DILocation(line: 6, column: 5, scope: !23) !30 = !DILocation(line: 6, column: 10, scope: !23) !31 = distinct !DIAssignID() !32 = !DILocation(line: 8, column: 5, scope: !23) !33 = !DILocation(line: 8, column: 10, scope: !23) !34 = distinct !DIAssignID() !35 = !DILocation(line: 9, column: 7, scope: !11) !36 = !DILocation(line: 9, column: 3, scope: !11) !37 = !DILocation(line: 10, column: 1, scope: !11) !38 = !DISubprogram(name: "esc", linkageName: "_Z3escPi", scope: !3, file: !3, line: 2, type: !39, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !42) !39 = !DISubroutineType(types: !40) !40 = !{null, !41} !41 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64) !42 = !{} !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}