[PATCH] D100684: [WIP][X86][CostModel] Further `X86TTIImpl::getMemoryOpCost()` improvements

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added a project: LLVM.
Herald added subscribers: pengfei, hiraditya.
lebedev.ri requested review of this revision.

Not really ready for review.

This improves costs for overaligned loads (even if we don't need the whole vector, we still can load it),
improves costs for stores, but regresses costs for normal loads,
`getShuffleCost(TTI::ShuffleKind::SK_InsertSubvector)` needs fixes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100684

Files:
  llvm/lib/Target/X86/X86TargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/X86/load_store.ll

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