[PATCH] D45271: [LV] Introduce TTI::getMinimumVF

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz created this revision.
kparzysz added reviewers: hsaito, craig.topper, dcaballe.

The function getMinimumVF(ElemWidth) will return the minimum VF for a vector with elements of size ElemWidth bits. This value will only apply to targets for which TTI::shouldMaximizeVectorBandwidth returns true. The value of 0 indicates that there is no minimum VF.

This is a follow-up to https://reviews.llvm.org/D44735.


Repository:
  rL LLVM

https://reviews.llvm.org/D45271

Files:
  include/llvm/Analysis/TargetTransformInfo.h
  include/llvm/Analysis/TargetTransformInfoImpl.h
  lib/Analysis/TargetTransformInfo.cpp
  lib/Target/Hexagon/HexagonTargetTransformInfo.cpp
  lib/Target/Hexagon/HexagonTargetTransformInfo.h
  lib/Transforms/Vectorize/LoopVectorize.cpp
  test/Transforms/LoopVectorize/Hexagon/lit.local.cfg
  test/Transforms/LoopVectorize/Hexagon/minimum-vf.ll

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