[PATCH] D79561: [ARM][CostModel] Improve getCastInstrCost

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
samparker added reviewers: dmgreen, SjoerdMeijer, efriedma, fhahn, t.p.northover.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls.
Herald added a project: LLVM.

- Specifically check for sext/zext users which have 'long' form NEON instructions.
- Add more entries to the table for sext/zexts so that we can report more accurately the number of vmovls required for NEON.
- Pass the instruction to the base implementation.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79561

Files:
  llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/ARM/cast.ll
  llvm/test/Transforms/LoopVectorize/ARM/add-cast-vect.ll
  llvm/test/Transforms/LoopVectorize/ARM/shl-cast-vect.ll
  llvm/test/Transforms/LoopVectorize/ARM/sub-cast-vect.ll

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