[PATCH] D30254: Remove sometimes faulty rewrite of memcpy in instcombine.

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Those results are much more noisy than they should be... if you're seeing run-to-run performance differences of over a second for the same binary, something has gone very wrong.  Please ask on llvm-dev for help with that.

Not sure what's causing the test failures... make sure you're passing --cc, --cxx, --cflags, and --cxxflags?


https://reviews.llvm.org/D30254