================
@@ -8520,7 +8561,29 @@
LoopVectorizationPlanner::tryToBuildVPlanWithVPRecipes(VFRange &Range) {
// When not folding the tail, we know that the induction increment will not
// overflow.
bool HasNUW = Style == TailFoldingStyle::None;
- addCanonicalIVRecipes(*Plan, Legal->getWidestInductionType(), HasNUW, DL);
+
+ VPValue *AliasMask = nullptr;
----------------
fhahn wrote:
If possible to do so in a separate transform, that would preferable IMO as now
the general VPlan construction has a bunch of added complexity for something
that is quite specific.
A similar approach was taken for adding various options to control tail-folding
(`addActiveLaneMask`, `tryAddExplicitVectorLength`). This also has the
advantage of keeping the code responsible to generate the new construct at a
single place, rather than spreading it across multiple places?
Having it as a separate transform also allows to generate VPlans with different
strategies (e.g. with and without this new mask) and pick the best option based
on cost.
https://github.com/llvm/llvm-project/pull/100579
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