[PATCH] D90342: [POC][LoopVectorizer] Propagate ElementCount to interfaces in preparation for scalable auto-vec.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen created this revision.
Herald added subscribers: dexonsmith, bmahjour, rogfer01, bollu, hiraditya.
Herald added a reviewer: rengolin.
Herald added a project: LLVM.
sdesmalen requested review of this revision.
Herald added a subscriber: vkmr.

This patch is part of a proof of concept for vectorising a loop using 
scalable vectors. The patch is shared for reference and there is no
expectation for this patch to land in the current form.

Some of the changes include:

- Change VFRange to use ElementCount for Start, End.
- Change buildVPlans to take an ElementCount
- Change buildVPlansWithVPRecipes to take an ElementCount
- Change LoopVectorizationCostModel::computeMaxVF to take an ElementCount.
- Change LoopVectorizationCostModel::computeFeasibleMaxVF to return an ElementCount.

This patch is NFC for fixed-width vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90342

Files:
  llvm/include/llvm/Support/TypeSize.h
  llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/VPlan.h

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