[PATCH] [AArch64 NEON] Fix a bug in implementing register copy bwtween FPR16.

[Tim Northover]

  Hi Kevin,

  The change looks obvious, but can we have a test? It shouldn't be too difficult to come up with a test where the compiler is forced to copy an FPR16 in a known way.

  Cheers.

  Tim.

http://llvm-reviews.chandlerc.com/D2590