[PATCH] D42402: [GISel]: Eliminate redundant copies b/w VRegs of same regclass at the end of InstructionSelection

Quentin Colombet via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Jan 23 16:51:24 PST 2018


qcolombet accepted this revision.
qcolombet added a comment.
This revision is now accepted and ready to land.

LGTM too. The code is probably simpler to understand like this and if compile-time turns out to be a problem we can revisit.
I wonder though if removing this copies upfront wouldn't have helped tablegen current matching table (because it does not look through COPYs right now).


https://reviews.llvm.org/D42402





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