[PATCH] D65360: [AArch64][GlobalISel] Eliminate redundant G_ZEXT when the source is implicitly zext-loaded

[Jessica Paquette via Phabricator via llvm-commits]

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

I think that for -O0 this makes sense.

(As for another combiner round, I wonder if it would make sense to have a "minimal combiner" for -O0 which only handles //extremely// simple transformations? Or is just adding a pass too much compile time overhead, even if it results in fewer instructions and thus less work for later passes?)


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https://reviews.llvm.org/D65360