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; REQUIRES: asserts
; RUN: opt < %s -S -loop-vectorize -enable-vplan-native-path -vplan-build-stress-test -debug-only=loop-vectorize -disable-output 2>&1 | FileCheck %s
; This test checks that, when stress testing VPlan, if the computed VF
; is 1, we override it to VF = 4.
; CHECK: LV: VPlan computed VF 1.
; CHECK: LV: VPlan stress testing: overriding computed VF.
; CHECK: LV: Using VF 4 to build VPlans.
@arr2 = external global [8 x i32], align 16
@arr = external global [8 x [8 x i32]], align 16
; Function Attrs: norecurse nounwind uwtable
define void @foo(i32 %n) {
entry:
br label %for.body
for.body: ; preds = %for.inc8, %entry
%indvars.iv21 = phi i64 [ 0, %entry ], [ %indvars.iv.next22, %for.inc8 ]
%arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* @arr2, i64 0, i64 %indvars.iv21
%0 = trunc i64 %indvars.iv21 to i32
store i32 %0, i32* %arrayidx, align 4
%1 = trunc i64 %indvars.iv21 to i32
%add = add nsw i32 %1, %n
br label %for.body3
for.body3: ; preds = %for.body3, %for.body
%indvars.iv = phi i64 [ 0, %for.body ], [ %indvars.iv.next, %for.body3 ]
%arrayidx7 = getelementptr inbounds [8 x [8 x i32]], [8 x [8 x i32]]* @arr, i64 0, i64 %indvars.iv, i64 %indvars.iv21
store i32 %add, i32* %arrayidx7, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 8
br i1 %exitcond, label %for.inc8, label %for.body3
for.inc8: ; preds = %for.body3
%indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
%exitcond23 = icmp eq i64 %indvars.iv.next22, 8
br i1 %exitcond23, label %for.end10, label %for.body, !llvm.loop !1
for.end10: ; preds = %for.inc8
ret void
}
!1 = distinct !{!1, !2}
!2 = !{!"llvm.loop.vectorize.enable", i1 true}
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