[PATCH] [AArch64] Fix v2i8->i16 bitcast legalization.

[Ahmed Bougacha]

Nope, the test only covers the ReplaceBITCASTResults change, the other one was for consistency, really.
I don't think we can hit that assert: from what I've seen, stuff like "bitcast <2 x i8> to half" is legalized elsewhere and wouldn't reach that function.

I can remove that change, what do you think?

-Ahmed

http://reviews.llvm.org/D6307