1; REQUIRES: asserts 2; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -riscv-v-vector-bits-min=128 -mattr="+v" -debug-only=loop-vectorize --disable-output -S 2>&1 | FileCheck %s 3 4; CHECK: LV: Loop hints: force=enabled 5; CHECK: LV: Scalar loop costs: 4. 6; ChosenFactor.Cost is 4, but the real cost will be divided by the width, which is 2. 7; CHECK: Cost for VF 2: 4 (Estimated cost per lane: 2.0) 8; Regardless of force vectorization or not, this loop will eventually be vectorized because of the cost model. 9; Therefore, the following message does not need to be printed even if vectorization is explicitly forced in the metadata. 10; CHECK-NOT: LV: Vectorization seems to be not beneficial, but was forced by a user. 11 12target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128" 13target triple = "riscv64-unknown-unknown" 14 15define i64 @foo(ptr nocapture noundef readonly %a, i64 noundef %N, i64 noundef %init) { 16entry: 17 br label %for.body 18 19for.body: ; preds = %entry, %for.body 20 %i.06 = phi i64 [ %inc, %for.body ], [ 0, %entry ] 21 %rd.05 = phi i64 [ %add, %for.body ], [ %init, %entry ] 22 %arrayidx = getelementptr inbounds i64, ptr %a, i64 %i.06 23 %0 = load i64, ptr %arrayidx, align 8 24 %add = add nsw i64 %0, %rd.05 25 %inc = add nuw i64 %i.06, 1 26 %exitcond.not = icmp eq i64 %inc, %N 27 br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !0 28 29for.end: ; preds = %for.body 30 ret i64 %add 31} 32 33!0 = !{!0, !1} 34!1 = !{!"llvm.loop.vectorize.enable", i1 true} 35