[PATCH] D64382: Use getMostFrequentByte to decide if should used memset+stores

[Vitaly Buka via Phabricator via cfe-commits]

vitalybuka created this revision.
vitalybuka added reviewers: eugenis, pcc, jfb.
Herald added subscribers: cfe-commits, dexonsmith.
Herald added a project: clang.
vitalybuka added a parent revision: D64111: Add getMostFrequentByte and use for isBytewiseValue implementation.

Previous implementation handled only memsets to zero.
There is options for other optimization which I left for separate patches and
tried to keep 'zeros' behavior unchanged.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D64382

Files:
  clang/lib/CodeGen/CGDecl.cpp
  clang/test/CodeGenCXX/auto-var-init.cpp

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