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1; REQUIRES: asserts2; RUN: opt < %s -S -passes=loop-vectorize -enable-vplan-native-path -vplan-build-stress-test -debug-only=loop-vectorize -disable-output 2>&1 | FileCheck %s3 4; This test checks that, when stress testing VPlan, if the computed VF5; is 1, we override it to VF = 4.6 7; CHECK: LV: VPlan computed VF 1.8; CHECK: LV: VPlan stress testing: overriding computed VF.9; CHECK: LV: Using VF 4 to build VPlans.10@arr2 = external global [8 x i32], align 1611@arr = external global [8 x [8 x i32]], align 1612 13; Function Attrs: norecurse nounwind uwtable14define void @foo(i32 %n) {15entry:16 br label %for.body17 18for.body: ; preds = %for.inc8, %entry19 %indvars.iv21 = phi i64 [ 0, %entry ], [ %indvars.iv.next22, %for.inc8 ]20 %arrayidx = getelementptr inbounds [8 x i32], ptr @arr2, i64 0, i64 %indvars.iv2121 %0 = trunc i64 %indvars.iv21 to i3222 store i32 %0, ptr %arrayidx, align 423 %1 = trunc i64 %indvars.iv21 to i3224 %add = add nsw i32 %1, %n25 br label %for.body326 27for.body3: ; preds = %for.body3, %for.body28 %indvars.iv = phi i64 [ 0, %for.body ], [ %indvars.iv.next, %for.body3 ]29 %arrayidx7 = getelementptr inbounds [8 x [8 x i32]], ptr @arr, i64 0, i64 %indvars.iv, i64 %indvars.iv2130 store i32 %add, ptr %arrayidx7, align 431 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 132 %exitcond = icmp eq i64 %indvars.iv.next, 833 br i1 %exitcond, label %for.inc8, label %for.body334 35for.inc8: ; preds = %for.body336 %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 137 %exitcond23 = icmp eq i64 %indvars.iv.next22, 838 br i1 %exitcond23, label %for.end10, label %for.body, !llvm.loop !139 40for.end10: ; preds = %for.inc841 ret void42}43 44!1 = distinct !{!1, !2}45!2 = !{!"llvm.loop.vectorize.enable", i1 true}46