[PATCH] D41463: [CodeGen] Add a new pass to sink Copy instructions after RA

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml added a comment.

In my environment, Xalan is sensitive in code alignment. I open see some small change which is not even applied in hot functions could impact on score in range of 3~4%.  I'm not sure if this is also your case.  Can you please share how this change impact on hot functions (AFAIK, Xalan has two hot functions). It will be great if you can share any suspicious sinking or transformations caused by sinking copies.


https://reviews.llvm.org/D41463