[PATCH] D41463: [CodeGen] Add a new pass for PostRA sink

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml added a comment.

> This pass destroys DominatorInfo and we have to recompute it right after the pass from scratch. Is it possible to preserve it? Also, have you measured compile time impact of the patch?

I measured compile time impact of this patch for spec2000/2006/2017. Overall, I wasn't able to see any reproduciable regression; all up and down are in noise range. There is no change in CFG in this pass, preserve DT should be good and I will submit a follow-up patch for it.


Repository:
  rL LLVM

https://reviews.llvm.org/D41463