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1; RUN: opt -S -passes=licm < %s | FileCheck %s2 3; LICM is trying to merge the two `store` in block %14 and %17, but given their4; locations disagree, it sets a line zero location instead instead of picking a5; random one (the DILocation picked the nearest enclosing scope of the two stores).6 7; Original C testcase.8; volatile int a;9; extern int g;10; int g;11; void f1() {12; while (a) {13; g = 0;14; if (a)15; g = 0;16; }17; }18 19; CHECK: bb22:20; CHECK-NEXT: store i32 0, ptr getelementptr inbounds ([2 x i32], ptr @g_390, i64 0, i64 1), align 4, !dbg [[storeLocation:![0-9]+]]21; CHECK: [[storeLocation]] = !DILocation(line: 022 23target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"24target triple = "x86_64-apple-macosx10.15.0"25 26@b = global i32 0, align 4, !dbg !027@c = global i32 0, align 4, !dbg !1028@g_390 = local_unnamed_addr global [2 x i32] zeroinitializer, align 4, !dbg !1229@a = local_unnamed_addr global i32 0, align 4, !dbg !630 31define i32 @main() local_unnamed_addr !dbg !22 {32bb:33 %i = load volatile i32, ptr @b, align 4, !dbg !37, !tbaa !4034 %i1 = icmp sgt i32 %i, -9, !dbg !4435 br i1 %i1, label %bb2, label %bb4, !dbg !4536 37bb2: ; preds = %bb38 br label %bb8, !dbg !4539 40bb3: ; preds = %bb841 br label %bb4, !dbg !4542 43bb4: ; preds = %bb3, %bb44 %i5 = load volatile i32, ptr @c, align 4, !dbg !46, !tbaa !4045 %i6 = icmp slt i32 %i5, 6, !dbg !4746 br i1 %i6, label %bb7, label %bb23, !dbg !4847 48bb7: ; preds = %bb449 br label %bb13, !dbg !4850 51bb8: ; preds = %bb8, %bb252 %i9 = load volatile i32, ptr @b, align 4, !dbg !49, !tbaa !4053 %i10 = add nsw i32 %i9, -1, !dbg !4954 store volatile i32 %i10, ptr @b, align 4, !dbg !49, !tbaa !4055 %i11 = load volatile i32, ptr @b, align 4, !dbg !37, !tbaa !4056 %i12 = icmp sgt i32 %i11, -9, !dbg !4457 br i1 %i12, label %bb8, label %bb3, !dbg !45, !llvm.loop !5058 59bb13: ; preds = %bb17, %bb760 store i32 0, ptr getelementptr inbounds ([2 x i32], ptr @g_390, i64 0, i64 1), align 4, !dbg !53, !tbaa !4061 %i14 = load volatile i32, ptr @b, align 4, !dbg !54, !tbaa !4062 %i15 = icmp eq i32 %i14, 0, !dbg !5463 br i1 %i15, label %bb16, label %bb17, !dbg !5564 65bb16: ; preds = %bb1366 store i32 0, ptr getelementptr inbounds ([2 x i32], ptr @g_390, i64 0, i64 1), align 4, !dbg !56, !tbaa !4067 br label %bb1768 69bb17: ; preds = %bb16, %bb1370 %i18 = load volatile i32, ptr @c, align 4, !dbg !57, !tbaa !4071 %i20 = load volatile i32, ptr @c, align 4, !dbg !46, !tbaa !4072 %i21 = icmp slt i32 %i20, 6, !dbg !4773 br i1 %i21, label %bb13, label %bb22, !dbg !48, !llvm.loop !5874 75bb22: ; preds = %bb1776 br label %bb23, !dbg !4877 78bb23: ; preds = %bb22, %bb479 ret i32 0, !dbg !6080}81 82!llvm.dbg.cu = !{!2}83!llvm.module.flags = !{!17, !18, !19, !20}84!llvm.ident = !{!21}85 86!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())87!1 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)88!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 11.0.0 (https://github.com/llvm/llvm-project d3588d0814c4cbc7fca677b4d9634f6e1428a331)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None, sysroot: "/")89!3 = !DIFile(filename: "a.c", directory: "/Users/davide/work/build/bin")90!4 = !{}91!5 = !{!6, !0, !10, !12}92!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())93!7 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)94!8 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !9)95!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)96!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())97!11 = distinct !DIGlobalVariable(name: "c", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)98!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())99!13 = distinct !DIGlobalVariable(name: "g_390", scope: !2, file: !3, line: 2, type: !14, isLocal: false, isDefinition: true)100!14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 64, elements: !15)101!15 = !{!16}102!16 = !DISubrange(count: 2)103!17 = !{i32 7, !"Dwarf Version", i32 4}104!18 = !{i32 2, !"Debug Info Version", i32 3}105!19 = !{i32 1, !"wchar_size", i32 4}106!20 = !{i32 7, !"PIC Level", i32 2}107!21 = !{!"clang version 11.0.0 (https://github.com/llvm/llvm-project d3588d0814c4cbc7fca677b4d9634f6e1428a331)"}108!22 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !23, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !25)109!23 = !DISubroutineType(types: !24)110!24 = !{!9}111!25 = !{!26}112!26 = !DILocalVariable(name: "l_1546", scope: !27, file: !3, line: 11, type: !32)113!27 = distinct !DILexicalBlock(scope: !28, file: !3, line: 10, column: 10)114!28 = distinct !DILexicalBlock(scope: !29, file: !3, line: 8, column: 9)115!29 = distinct !DILexicalBlock(scope: !30, file: !3, line: 6, column: 23)116!30 = distinct !DILexicalBlock(scope: !31, file: !3, line: 6, column: 3)117!31 = distinct !DILexicalBlock(scope: !22, file: !3, line: 6, column: 3)118!32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !33, size: 288, elements: !34)119!33 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)120!34 = !{!35, !36, !35}121!35 = !DISubrange(count: 3)122!36 = !DISubrange(count: 4)123!37 = !DILocation(line: 4, column: 10, scope: !38)124!38 = distinct !DILexicalBlock(scope: !39, file: !3, line: 4, column: 3)125!39 = distinct !DILexicalBlock(scope: !22, file: !3, line: 4, column: 3)126!40 = !{!41, !41, i64 0}127!41 = !{!"int", !42, i64 0}128!42 = !{!"omnipotent char", !43, i64 0}129!43 = !{!"Simple C/C++ TBAA"}130!44 = !DILocation(line: 4, column: 12, scope: !38)131!45 = !DILocation(line: 4, column: 3, scope: !39)132!46 = !DILocation(line: 6, column: 10, scope: !30)133!47 = !DILocation(line: 6, column: 12, scope: !30)134!48 = !DILocation(line: 6, column: 3, scope: !31)135!49 = !DILocation(line: 4, column: 19, scope: !38)136!50 = distinct !{!50, !45, !51, !52}137!51 = !DILocation(line: 5, column: 5, scope: !39)138!52 = !{!"llvm.loop.unroll.disable"}139!53 = !DILocation(line: 7, column: 14, scope: !29)140!54 = !DILocation(line: 8, column: 9, scope: !28)141!55 = !DILocation(line: 8, column: 9, scope: !29)142!56 = !DILocation(line: 12, column: 16, scope: !27)143!57 = !DILocation(line: 6, column: 19, scope: !30)144!58 = distinct !{!58, !48, !59, !52}145!59 = !DILocation(line: 14, column: 3, scope: !31)146!60 = !DILocation(line: 15, column: 1, scope: !22)147