Merging r196208:

------------------------------------------------------------------------
r196208 | haoliu | 2013-12-02 21:58:30 -0800 (Mon, 02 Dec 2013) | 3 lines

AArch64: add missing ACLE intrinsics mapping to general arithmetic operation from VFP instructions.
E.g. float64x1_t vadd_f64(float64x1_t a, float64x1_t b) -> FADD Dd, Dn, Dm.

------------------------------------------------------------------------

llvm-svn: 196693