[PATCH] D89207: [MemCpyOpt] Port to MemorySSA

[Nikita Popov via Phabricator via llvm-commits]

nikic created this revision.
nikic added reviewers: asbirlea, fhahn.
Herald added subscribers: llvm-commits, george.burgess.iv, hiraditya, Prazek.
Herald added a project: LLVM.
nikic requested review of this revision.

This is a straightforward port of MemCpyOpt to MemorySSA following the approach of D26739 <https://reviews.llvm.org/D26739>. MemDep queries are replaced with MSSA queries without changing the overall structure of the pass. Some care has to be taken to account for differences between these APIs (MemDep also returns reads, MSSA doesn't).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89207

Files:
  llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h
  llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
  llvm/test/Transforms/MemCpyOpt/callslot.ll
  llvm/test/Transforms/MemCpyOpt/invariant.start.ll
  llvm/test/Transforms/MemCpyOpt/memcpy-invoke-memcpy.ll
  llvm/test/Transforms/MemCpyOpt/memcpy.ll
  llvm/test/Transforms/MemCpyOpt/merge-into-memset.ll
  llvm/test/Transforms/MemCpyOpt/mixed-sizes.ll
  llvm/test/Transforms/MemCpyOpt/nonlocal-memcpy-memcpy.ll
  llvm/test/Transforms/MemCpyOpt/stackrestore.ll

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