[PATCH] D28388: Add ArgumentCopyElision MI pass

[Bob Haarman via Phabricator via llvm-commits]

inglorion added a comment.

Right. The reason I asked is that it seems to me that enabling the pass will be neutral or better for code size and run time, while not costing much or possibly even being beneficial at compile time (we do a bit of extra analysis on a few instructions, but then we lower the number of instructions that the rest of the build operates on). If that is indeed the case, I would be in favor of enabling the new pass by default.


https://reviews.llvm.org/D28388