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1; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -S -pass-remarks-missed='loop-vectorize' 2>&1 | FileCheck %s2 3; C/C++ code for control flow test4; int test(int *A, int Length) {5; for (int i = 0; i < Length; i++) {6; if (A[i] > 10.0) goto end;7; A[i] = 0;8; }9; end:10; return 0;11; }12 13; CHECK: remark: source.cpp:5:9: loop not vectorized: Cannot vectorize potentially faulting early exit loop14; CHECK: remark: source.cpp:5:9: loop not vectorized15 16; CHECK: _Z4testPii17; CHECK-NOT: x i32>18; CHECK: ret19 20target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"21 22; Function Attrs: nounwind optsize ssp uwtable23define i32 @_Z4testPii(ptr nocapture %A, i32 %Length) #0 !dbg !4 {24entry:25 %cmp8 = icmp sgt i32 %Length, 0, !dbg !1026 br i1 %cmp8, label %for.body.preheader, label %end, !dbg !1027 28for.body.preheader: ; preds = %entry29 br label %for.body, !dbg !1230 31for.body: ; preds = %for.body.preheader, %if.else32 %indvars.iv = phi i64 [ %indvars.iv.next, %if.else ], [ 0, %for.body.preheader ]33 %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv, !dbg !1234 %0 = load i32, ptr %arrayidx, align 4, !dbg !12, !tbaa !1535 %cmp1 = icmp sgt i32 %0, 10, !dbg !1236 br i1 %cmp1, label %end.loopexit, label %if.else, !dbg !1237 38if.else: ; preds = %for.body39 store i32 0, ptr %arrayidx, align 4, !dbg !19, !tbaa !1540 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !1041 %1 = trunc i64 %indvars.iv.next to i32, !dbg !1042 %cmp = icmp slt i32 %1, %Length, !dbg !1043 br i1 %cmp, label %for.body, label %end.loopexit, !dbg !1044 45end.loopexit: ; preds = %if.else, %for.body46 br label %end47 48end: ; preds = %end.loopexit, %entry49 ret i32 0, !dbg !2050}51 52attributes #0 = { nounwind }53 54!llvm.dbg.cu = !{!0}55!llvm.module.flags = !{!7, !8}56!llvm.ident = !{!9}57 58!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)59!1 = !DIFile(filename: "source.cpp", directory: ".")60!2 = !{}61!4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2)62!5 = !DIFile(filename: "source.cpp", directory: ".")63!6 = !DISubroutineType(types: !2)64!7 = !{i32 2, !"Dwarf Version", i32 2}65!8 = !{i32 2, !"Debug Info Version", i32 3}66!9 = !{!"clang version 3.5.0"}67!10 = !DILocation(line: 3, column: 8, scope: !11)68!11 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4)69!12 = !DILocation(line: 5, column: 9, scope: !13)70!13 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !14)71!14 = distinct !DILexicalBlock(line: 4, column: 3, file: !1, scope: !11)72!15 = !{!16, !16, i64 0}73!16 = !{!"int", !17, i64 0}74!17 = !{!"omnipotent char", !18, i64 0}75!18 = !{!"Simple C/C++ TBAA"}76!19 = !DILocation(line: 8, column: 7, scope: !13)77!20 = !DILocation(line: 12, column: 3, scope: !4)78