[PATCH] [AArch64 NEON] Lower SELECT_CC with vector operand.

[Kevin Qin]

Hi,

When the scalar compare is between floating point, we custom lower SELECT_CC to use NEON SIMD compare for generating less instructions. Please review, thanks.

http://llvm-reviews.chandlerc.com/D2639

Files:
  lib/Target/AArch64/AArch64ISelLowering.cpp
  lib/Target/AArch64/AArch64InstrNEON.td
  test/CodeGen/AArch64/neon-select_cc.ll
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