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1; REQUIRES: asserts2; RUN: opt -passes=loop-vectorize -mtriple=arm64-apple-iphoneos -pass-remarks-analysis=loop-vectorize -debug-only=loop-vectorize -S < %s 2>&1 | FileCheck %s3 4; Specify a large unsafe vectorization factor of 32 that gets clamped to 16.5 6; CHECK: LV: User VF=32 is unsafe, clamping to max safe VF=16.7; CHECK: remark: <unknown>:0:0: User-specified vectorization factor 32 is unsafe, clamping to maximum safe vectorization factor 168; CHECK: LV: Selecting VF: 16.9; CHECK-LABEL: @test10; CHECK: <16 x i64>11define void @test(ptr nocapture %a, ptr nocapture readonly %b) {12entry:13 br label %loop.header14 15loop.header:16 %iv = phi i64 [ 0, %entry ], [ %iv.next, %latch ]17 %arrayidx = getelementptr inbounds i64, ptr %a, i64 %iv18 %0 = load i64, ptr %arrayidx, align 419 %arrayidx2 = getelementptr inbounds i64, ptr %b, i64 %iv20 %1 = load i64, ptr %arrayidx2, align 421 %add = add nsw i64 %1, %022 %2 = add nuw nsw i64 %iv, 1623 %arrayidx5 = getelementptr inbounds i64, ptr %a, i64 %224 %c = icmp eq i64 %1, 12025 br i1 %c, label %then, label %latch26 27then:28 store i64 %add, ptr %arrayidx5, align 429 br label %latch30 31latch:32 %iv.next = add nuw nsw i64 %iv, 133 %exitcond.not = icmp eq i64 %iv.next, 102434 br i1 %exitcond.not, label %exit, label %loop.header, !llvm.loop !035 36exit:37 ret void38}39 40!0 = !{!0, !1, !2}41!1 = !{!"llvm.loop.vectorize.width", i64 32}42!2 = !{!"llvm.loop.vectorize.enable", i1 true}43