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1; Confirm that the line numbers for the middle.block operations are all the2; same as the start of the loop.3 4; RUN: opt -S -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=4 <%s | FileCheck %s5;6; CHECK: middle.block:7; CHECK-NEXT: %{{.*}}= add <4 x i32>{{.*}}, !dbg ![[DL:[0-9]+]]8; CHECK-NEXT: %{{.*}}= add <4 x i32>{{.*}}, !dbg ![[DL]]9; CHECK-NEXT: %{{.*}}= add <4 x i32>{{.*}}, !dbg ![[DL]]10; CHECK-NEXT: %{{.*}}= call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> {{.*}}), !dbg ![[DL]]11; CHECK-NEXT: %{{.*}}= icmp eq i64{{.*}}, !dbg ![[DL]]12; CHECK-NEXT: br i1 %{{.*}}, !dbg ![[DL]]13; CHECK: ![[DL]] = !DILocation(line: 5,14 15; This IR can be generated by running:16; clang -gmlt -S src.cpp -emit-llvm -mllvm -opt-bisect-limit=56 -O2 -o -17;18; Where src.cpp contains:19; int foo(int count, int *bar)20; {21; int ret = count;22; int tmp;23; for (int j = 0; j < count; j++) {24; tmp = bar[j];25; ret += tmp;26; }27;28; return ret;29; }30 31define dso_local i32 @"foo"(i32 %count, ptr nocapture readonly %bar) local_unnamed_addr !dbg !8 {32entry:33 %cmp8 = icmp sgt i32 %count, 0, !dbg !1034 br i1 %cmp8, label %for.body.preheader, label %for.cond.cleanup, !dbg !1035 36for.body.preheader: ; preds = %entry37 %wide.trip.count = zext i32 %count to i6438 br label %for.body, !dbg !1139 40for.cond.cleanup.loopexit: ; preds = %for.body41 %add.lcssa = phi i32 [ %add, %for.body ], !dbg !1242 br label %for.cond.cleanup, !dbg !1343 44for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry45 %ret.0.lcssa = phi i32 [ %count, %entry ], [ %add.lcssa, %for.cond.cleanup.loopexit ], !dbg !1446 ret i32 %ret.0.lcssa, !dbg !1347 48for.body: ; preds = %for.body, %for.body.preheader49 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]50 %ret.09 = phi i32 [ %count, %for.body.preheader ], [ %add, %for.body ]51 %arrayidx = getelementptr inbounds i32, ptr %bar, i64 %indvars.iv, !dbg !1152 %0 = load i32, ptr %arrayidx, align 4, !dbg !11, !tbaa !1553 %add = add nsw i32 %0, %ret.09, !dbg !1254 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !1055 %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count, !dbg !1056 br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !10, !llvm.loop !1957}58 59!llvm.dbg.cu = !{!0}60!llvm.module.flags = !{!3, !4, !5, !6}61!llvm.ident = !{!7}62 63!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, nameTableKind: None)64!1 = !DIFile(filename: "src.cpp", directory: "")65!2 = !{}66!3 = !{i32 2, !"CodeView", i32 1}67!4 = !{i32 2, !"Debug Info Version", i32 3}68!5 = !{i32 1, !"wchar_size", i32 2}69!6 = !{i32 7, !"PIC Level", i32 2}70!7 = !{!""}71!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !9, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)72!9 = !DISubroutineType(types: !2)73!10 = !DILocation(line: 5, scope: !8)74!11 = !DILocation(line: 6, scope: !8)75!12 = !DILocation(line: 7, scope: !8)76!13 = !DILocation(line: 10, scope: !8)77!14 = !DILocation(line: 0, scope: !8)78!15 = !{!16, !16, i64 0}79!16 = !{!"int", !17, i64 0}80!17 = !{!"omnipotent char", !18, i64 0}81!18 = !{!"Simple C++ TBAA"}82!19 = distinct !{!19, !10, !20}83!20 = !DILocation(line: 8, scope: !8)84