[PATCH] [AArch64] Fix a bug generating incorrect instruction when building small vector.

[Kevin Qin]

Hi Tim,


Here is the new revision adding codes to compute how many parts of split lane should be inserted. Please have a look.

Thanks,
Kevin

http://reviews.llvm.org/D4385

Files:
  lib/Target/AArch64/AArch64ISelLowering.cpp
  test/CodeGen/AArch64/arm64-neon-copy.ll
  test/CodeGen/AArch64/neon-perm.ll
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