[PATCH] D108074: [MemorySSA] Remove unnecessary MSSA dependencies

[Nikita Popov via Phabricator via llvm-commits]

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

LoopLoadElimination, LoopVersioning and LoopVectorize currently fetch MemorySSA when construction LoopAccessAnalysis. However, LoopAccessAnalysis does not actually use MemorySSA and we can pass nullptr instead.

Together with D108073 <https://reviews.llvm.org/D108073> this makes for a free compile-time improvement: https://llvm-compile-time-tracker.com/compare.php?from=371f6ec0254dbdb461323a46515d167c6fe40359&to=59e5e3b85ed5a01c92b9d76a65327eae98953a3d&stat=instructions


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108074

Files:
  llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
  llvm/lib/Transforms/Utils/LoopVersioning.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/novect-lcssa-cfg-invalidation.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D108074.366439.patch
Type: text/x-patch
Size: 4912 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210814/dfc1ef31/attachment.bin>