Merging r196198:

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r196198 | haoliu | 2013-12-02 19:39:47 -0800 (Mon, 02 Dec 2013) | 3 lines

AArch64: Add missing scalar pair intrinsics.
E.g. "float32_t vaddv_f32(float32x2_t a)" to be matched into "faddp s0, v1.2s".

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llvm-svn: 196691