[PATCH] D129980: [RISCV] Optimize (seteq (i64 (and X, 0xffffffff)), C1)

[Philip Reames via Phabricator via llvm-commits]

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

LGTM

Correct me if I'm wrong, but this should improve the idiomatic icmp eq i32 patterns for ELEN=64 right?  If so, have you thought about analogous cases for 16 and 8 bits w/Zb*?  On the surface, using a sext.h/b over a zext.h/b wouldn't seem to matter, but the constant simplifications are potentially interesting.  Should we be canonicalizing towards sext anyways?


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https://reviews.llvm.org/D129980