[PATCH] Added a new transformation " (sub (or A, B) (and A, B)) --> (xor A, B) "

[Anton Korobeynikov]

The question still applies (and actually is very in-line with Hal's comments in D5719) - you need to provide some evidence that such pattern indeed happens in practice (why it's so hard to count how many times it happens in test-suite? after more than month?). And it's not some random stuff which you simple want to commit in due to some reason you do not want to share with us.

http://reviews.llvm.org/D5720