[PATCH] D96405: [DAGCombiner] Improve reduceBuildVecToShuffle Performance

Michael Marjieh via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Feb 16 06:45:35 PST 2021


mmarjieh added a comment.

Hey guys, I would appreciate it if you can review.
I think this change is beneficial for all targets, since we are reducing the number of shuffle_vector dag nodes and hence reducing code size.
Since I am not familiar with all targets, can you go over the target assembly and verify that it is beneficial for you?
I counted the number of instructions in each lit test and saw an improvement in the number of instructions.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D96405/new/

https://reviews.llvm.org/D96405



More information about the llvm-commits mailing list