[PATCH] D132960: [InstCombine] Transform small unaligned memcmp calls used in zero equality tests

[Martin Sebor via Phabricator via llvm-commits]

msebor added a comment.

In D132960#3759601 <https://reviews.llvm.org/D132960#3759601>, @efriedma wrote:

> To be clear, this is proposing to replace a memcmp of 8 bytes with up to 16 byte-sized loads on targets with strict alignment?  That seems excessive to me.

No, the patch doesn't change the size limit (the size of a scalar register, or 8 on all the targets I tested).  It just removes the restriction on alignment and size being a power of two.


Repository:
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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D132960/new/

https://reviews.llvm.org/D132960