[llvm] [VPlan] Handle early exit before forming regions. (NFC) (PR #138393)

[via llvm-commits]

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@@ -9383,7 +9383,8 @@ LoopVectorizationPlanner::tryToBuildVPlanWithVPRecipes(VFRange &Range) {
   VPlanTransforms::prepareForVectorization(
       *Plan, Legal->getWidestInductionType(), PSE, RequiresScalarEpilogueCheck,
       CM.foldTailByMasking(), OrigLoop,
-      getDebugLocFromInstOrOperands(Legal->getPrimaryInduction()));
+      getDebugLocFromInstOrOperands(Legal->getPrimaryInduction()),
+      Legal->hasUncountableEarlyExit(), Range);
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ayalz wrote:

Ah, thanks for clarifying!
"If it is false, it means there are no uncountable early exits, i.e., all early exits are countable which requires a scalar epilogue."

https://github.com/llvm/llvm-project/pull/138393