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1; RUN: opt --passes=licm -S -o - < %s | FileCheck %s2 3; Building the test case with `clang -O2 -g` the call to 'getInOrder'4; on line 16 is sunk out of the loop by LICM.5; According to 'HowToUpdateDebugInfo' the source location of the sunk6; call should be dropped.7 8; 1 __attribute__((noinline)) int getInOrder(int Idx) {9; 2 static int InOrder[] = { 0, 1 };10; 3 return InOrder[Idx];11; 4 }12; 513; 6 __attribute__((noinline)) int getRandVar(int Idx) {14; 7 static int RandVars[] = { 4, 4 };15; 8 return RandVars[Idx];16; 9 }17; 1018; 11 int bounce() {19; 12 int Sum = 0;20; 13 int Extra = 0;21; 14 for (int I = 0; I < 2; ++I) {22; 15 Sum += getRandVar(I);23; 16 Extra = getInOrder(I);24; 17 Sum %= 4;25; 18 }26; 19 return Sum + Extra;27; 20 }28 29; CHECK-LABEL: for.end:30; CHECK: tail call noundef i32 @getInOrder({{.*}}), !dbg ![[DBG:[0-9]+]]31; CHECK-DAG: ![[DBG]] = !DILocation(line: 0, scope: ![[SCOPE:[0-9]+]]32; CHECK-DAG: ![[SCOPE]] = distinct !DISubprogram(name: "bounce",33 34define noundef i32 @getInOrder(i32 noundef %Idx) #0 !dbg !9 {35entry:36 ret i32 237}38 39define noundef i32 @getRandVar(i32 noundef %Idx) #0 !dbg !15 {40entry:41 ret i32 442}43 44define noundef i32 @bounce() !dbg !17 {45entry:46 br label %for.body, !dbg !2047 48for.body: ; preds = %entry, %for.body49 %I.07 = phi i32 [ 0, %entry ], [ %inc, %for.body ]50 %Sum.06 = phi i32 [ 0, %entry ], [ %rem, %for.body ]51 %call = tail call noundef i32 @getRandVar(i32 noundef %I.07), !dbg !2152 %add = add nsw i32 %call, %Sum.06, !dbg !2153 %call1 = tail call noundef i32 @getInOrder(i32 noundef %I.07), !dbg !2254 %rem = srem i32 %add, 4, !dbg !2355 %inc = add nuw nsw i32 %I.07, 1, !dbg !2056 %cmp = icmp ult i32 %inc, 2, !dbg !2057 br i1 %cmp, label %for.body, label %for.end, !dbg !20, !llvm.loop !2458 59for.end: ; preds = %for.body60 %Sum.0.lcssa = phi i32 [ %rem, %for.body ], !dbg !2761 %Extra.0.lcssa = phi i32 [ %call1, %for.body ], !dbg !2762 %add2 = add nsw i32 %Extra.0.lcssa, %Sum.0.lcssa, !dbg !2863 ret i32 %add2, !dbg !2864}65 66attributes #0 = { noinline nounwind willreturn memory(none) }67 68!llvm.dbg.cu = !{!0}69!llvm.module.flags = !{!2, !3, !4, !5, !6, !7}70!llvm.ident = !{!8}71 72!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 17.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)73!1 = !DIFile(filename: "test.cpp", directory: "", checksumkind: CSK_MD5, checksum: "cce1594f8ccf16528cd91ee35b0c1fea")74!2 = !{i32 2, !"CodeView", i32 1}75!3 = !{i32 2, !"Debug Info Version", i32 3}76!4 = !{i32 1, !"wchar_size", i32 2}77!5 = !{i32 8, !"PIC Level", i32 2}78!6 = !{i32 7, !"uwtable", i32 2}79!7 = !{i32 1, !"MaxTLSAlign", i32 65536}80!8 = !{!"clang version 17.0.0"}81!9 = distinct !DISubprogram(name: "getInOrder", scope: !1, file: !1, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13)82!10 = !DISubroutineType(types: !11)83!11 = !{!12, !12}84!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)85!13 = !{}86!14 = !DILocation(line: 3, scope: !9)87!15 = distinct !DISubprogram(name: "getRandVar", scope: !1, file: !1, line: 6, type: !10, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13)88!16 = !DILocation(line: 8, scope: !15)89!17 = distinct !DISubprogram(name: "bounce", scope: !1, file: !1, line: 11, type: !18, scopeLine: 11, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13)90!18 = !DISubroutineType(types: !19)91!19 = !{!12}92!20 = !DILocation(line: 14, scope: !17)93!21 = !DILocation(line: 15, scope: !17)94!22 = !DILocation(line: 16, scope: !17)95!23 = !DILocation(line: 17, scope: !17)96!24 = distinct !{!24, !20, !25, !26}97!25 = !DILocation(line: 18, scope: !17)98!26 = !{!"llvm.loop.mustprogress"}99!27 = !DILocation(line: 0, scope: !17)100!28 = !DILocation(line: 19, scope: !17)101