[PATCH] D48041: [SCEV] Add transform zext((A * B * ...)<nuw>) --> (zext(A) * zext(B) * ...)<nuw>.

Sanjoy Das via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Jun 11 20:52:34 PDT 2018


sanjoy added a comment.

In https://reviews.llvm.org/D48041#1129233, @mzolotukhin wrote:

> Hi Justin,
>
> This (or the previous) commit caused a ~1.4% compile time slowdown on CTMark/mafft/pairlocalalign. Any ideas on how we can avoid it?


Is there some way to figure out what exactly got slower (it could be SCEV or some user of SCEV)?


Repository:
  rL LLVM

https://reviews.llvm.org/D48041





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