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; RUN: opt < %s -passes=loop-vectorize -enable-vplan-native-path -vplan-build-stress-test -debug-only=loop-vectorize -disable-output 2>&1 | FileCheck %s
; REQUIRES: asserts
; Verify that the stress testing flag for the VPlan H-CFG builder works as
; expected with and without enabling the VPlan H-CFG Verifier.
; CHECK: VPlan 'HCFGBuilder: Plain CFG
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @foo(ptr nocapture %a, ptr nocapture readonly %b, i32 %N, i32 %M) {
entry:
%cmp32 = icmp sgt i32 %N, 0
br i1 %cmp32, label %outer.ph, label %for.end15
outer.ph:
%cmp230 = icmp sgt i32 %M, 0
%0 = sext i32 %M to i64
%wide.trip.count = zext i32 %M to i64
%wide.trip.count38 = zext i32 %N to i64
br label %outer.body
outer.body:
%indvars.iv35 = phi i64 [ 0, %outer.ph ], [ %indvars.iv.next36, %outer.inc ]
br i1 %cmp230, label %inner.ph, label %outer.inc
inner.ph:
%1 = mul nsw i64 %indvars.iv35, %0
br label %inner.body
inner.body:
%indvars.iv = phi i64 [ 0, %inner.ph ], [ %indvars.iv.next, %inner.body ]
%2 = add nsw i64 %indvars.iv, %1
%arrayidx = getelementptr inbounds i32, ptr %b, i64 %2
%3 = load i32, ptr %arrayidx, align 4
%arrayidx12 = getelementptr inbounds i32, ptr %a, i64 %2
store i32 %3, ptr %arrayidx12, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
br i1 %exitcond, label %outer.inc, label %inner.body
outer.inc:
%indvars.iv.next36 = add nuw nsw i64 %indvars.iv35, 1
%exitcond39 = icmp eq i64 %indvars.iv.next36, %wide.trip.count38
br i1 %exitcond39, label %for.end15, label %outer.body
for.end15:
ret void
}
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