Florian Hahn a7fda0e1e4 [VPlan] Introduce VPScalarPHIRecipe, use for can & EVL IV codegen (NFC). (#114305) ...

Introduce a general recipe to generate a scalar phi. Lower
VPCanonicalIVPHIRecipe and VPEVLBasedIVRecipe to VPScalarIVPHIrecipe
before plan execution, avoiding the need for duplicated ::execute
implementations. There are other cases that could benefit, including
in-loop reduction phis and pointer induction phis.

Builds on a similar idea as
https://github.com/llvm/llvm-project/pull/82270.

PR: https://github.com/llvm/llvm-project/pull/114305

2024-12-03 14:53:51 +00:00

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