[PATCH] [AArch64] Refactor AArch64NamedImmMapper to become dependent on subtarget features.

[Vladimir Sukharev]

Eric, (or Tim?)
would you please review my last version? This had blocked the approved chain to commit
http://reviews.llvm.org/D8584 [AArch64] Handle Cyclone-specific register in common way
http://reviews.llvm.org/D8498 [AArch64] Add v8.1a "Privileged Access Never" extension
http://reviews.llvm.org/D8500 [AArch64] Add v8.1a "Virtualization Host Extensions"
http://reviews.llvm.org/D8499 [AArch64] Add v8.1a "Limited Ordering Regions" extension


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D8496

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