[llvm] [LV, VP]VP intrinsics support for the Loop Vectorizer + adding new tail-folding mode using EVL. (PR #76172)

[Alexey Bataev via llvm-commits]

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@@ -8599,6 +8655,8 @@ void LoopVectorizationPlanner::buildVPlansWithVPRecipes(ElementCount MinVF,
         VPlanTransforms::truncateToMinimalBitwidths(
             *Plan, CM.getMinimalBitwidths(), PSE.getSE()->getContext());
       VPlanTransforms::optimize(*Plan, *PSE.getSE());
+      if (CM.useVPIWithVPEVLVectorization())
+        VPlanTransforms::addExplicitVectorLength(*Plan);
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alexey-bataev wrote:

I tried it, explained it here long time ago https://reviews.llvm.org/D99750. It does not work because of some reason (some recipes are removed/transformed too early, so cannot put it later in the pipeline)

https://github.com/llvm/llvm-project/pull/76172