1 ; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s 2 3 ; C/C++ code for control flow test 4 ; 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: loop control flow is not understood by vectorizer 14 ; CHECK: remark: source.cpp:5:9: loop not vectorized: vectorization was not specified 15 16 ; CHECK: _Z4testPii 17 ; CHECK-NOT: x i32> 18 ; CHECK: ret 19 20 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 21 22 ; Function Attrs: nounwind optsize ssp uwtable 23 define i32 @_Z4testPii(i32* nocapture %A, i32 %Length) #0 { 24 entry: 25 %cmp8 = icmp sgt i32 %Length, 0, !dbg !10 26 br i1 %cmp8, label %for.body.preheader, label %end, !dbg !10 27 28 for.body.preheader: ; preds = %entry 29 br label %for.body, !dbg !12 30 31 for.body: ; preds = %for.body.preheader, %if.else 32 %indvars.iv = phi i64 [ %indvars.iv.next, %if.else ], [ 0, %for.body.preheader ] 33 %arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !12 34 %0 = load i32* %arrayidx, align 4, !dbg !12, !tbaa !15 35 %cmp1 = icmp sgt i32 %0, 10, !dbg !12 36 br i1 %cmp1, label %end.loopexit, label %if.else, !dbg !12 37 38 if.else: ; preds = %for.body 39 store i32 0, i32* %arrayidx, align 4, !dbg !19, !tbaa !15 40 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10 41 %1 = trunc i64 %indvars.iv.next to i32, !dbg !10 42 %cmp = icmp slt i32 %1, %Length, !dbg !10 43 br i1 %cmp, label %for.body, label %end.loopexit, !dbg !10 44 45 end.loopexit: ; preds = %if.else, %for.body 46 br label %end 47 48 end: ; preds = %end.loopexit, %entry 49 ret i32 0, !dbg !20 50 } 51 52 attributes #0 = { nounwind } 53 54 !llvm.dbg.cu = !{!0} 55 !llvm.module.flags = !{!7, !8} 56 !llvm.ident = !{!9} 57 58 !0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 2} 59 !1 = metadata !{metadata !"source.cpp", metadata !"."} 60 !2 = metadata !{} 61 !3 = metadata !{metadata !4} 62 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"test", metadata !"test", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32*, i32)* @_Z4testPii, null, null, metadata !2, i32 2} 63 !5 = metadata !{i32 786473, metadata !1} 64 !6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null} 65 !7 = metadata !{i32 2, metadata !"Dwarf Version", i32 2} 66 !8 = metadata !{i32 2, metadata !"Debug Info Version", i32 1} 67 !9 = metadata !{metadata !"clang version 3.5.0"} 68 !10 = metadata !{i32 3, i32 8, metadata !11, null} 69 !11 = metadata !{i32 786443, metadata !1, metadata !4, i32 3, i32 3, i32 0, i32 0} 70 !12 = metadata !{i32 5, i32 9, metadata !13, null} 71 !13 = metadata !{i32 786443, metadata !1, metadata !14, i32 5, i32 9, i32 0, i32 2} 72 !14 = metadata !{i32 786443, metadata !1, metadata !11, i32 4, i32 3, i32 0, i32 1} 73 !15 = metadata !{metadata !16, metadata !16, i64 0} 74 !16 = metadata !{metadata !"int", metadata !17, i64 0} 75 !17 = metadata !{metadata !"omnipotent char", metadata !18, i64 0} 76 !18 = metadata !{metadata !"Simple C/C++ TBAA"} 77 !19 = metadata !{i32 8, i32 7, metadata !13, null} 78 !20 = metadata !{i32 12, i32 3, metadata !4, null} 79
