[llvm] [VPlan] Make canonical IV part of the region (PR #156262)

[via llvm-commits]

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@@ -1521,9 +1531,11 @@ static bool isConditionTrueViaVFAndUF(VPValue *Cond, VPlan &Plan,
     });
 
   auto *CanIV = Plan.getCanonicalIV();
-  if (!match(Cond, m_SpecificICmp(CmpInst::ICMP_EQ,
-                                  m_Specific(CanIV->getBackedgeValue()),
-                                  m_Specific(&Plan.getVectorTripCount()))))
+  if (!match(Cond, m_Binary<Instruction::ICmp>(
+                       m_c_Add(m_Specific(CanIV), m_Specific(&Plan.getVFxUF())),
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ayalz wrote:

Trying to retrieve CanIVInc, w/o having a backedge value?

https://github.com/llvm/llvm-project/pull/156262