[PATCH] D136234: [RFC][GISel] Add a way to ignore COPY instructions in InstructionSelector

[Petar Avramovic via Phabricator via llvm-commits]

Petar.Avramovic added a comment.

I like the GISelFlags, looks pretty lightweight.
Are you planning to add more flags?
About IgnoreCopies, it looks correct to me. Considering the possibility to break constant bus limit, patch synergies well with GISelPredicateCode that checks for it.
Can you add look through copies to Three Op Pats from VOP3 td file?
Upcoming regbankselect changes should be able to deal with copies but nevertheless I would like to see this one merged.
LGTM but I would wait for feedback from other reviewers.


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https://reviews.llvm.org/D136234