[PATCH] D46278: [AArch64] Fold B = csel A, A into B = COPY A

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Do you have any idea why this is happening?  I would expect that normally, instruction selection won't insert a useless csel.  (If we're missing some fold before isel, fixing that could have a larger benefit overall.)


https://reviews.llvm.org/D46278