[PATCH] D51751: Merge clang's isRepeatedBytePattern with LLVM's isBytewiseValue
JF Bastien via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 20 14:09:19 PDT 2018
jfb updated this revision to Diff 166359.
jfb marked 2 inline comments as done.
jfb added a comment.
- Augment isBytewiseValue to be as powerful as clang's version. Update code that used it to handle undef merging. This captures more memcpy patterns and can generate memcpy of undef (which selection DAG later gets rid of).
- Update comments and move Ctx down a bit.
- Remove ref param
- Remove extra changes, left over from clang-format
Repository:
rL LLVM
https://reviews.llvm.org/D51751
Files:
include/llvm/Analysis/ValueTracking.h
lib/Analysis/ValueTracking.cpp
lib/Transforms/Scalar/LoopIdiomRecognize.cpp
lib/Transforms/Scalar/MemCpyOptimizer.cpp
test/Transforms/MemCpyOpt/fca2memcpy.ll
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