Vladimir Sukharev 24c3ef3325 [AArch64] Refactor AArch64NamedImmMapper to become dependent on subtarget features.
In order to introduce v8.1a-specific entities, Mappers should be aware of SubtargetFeatures available.

This patch introduces refactoring, that will then allow to easily introduce:

- v8.1-specific "pan" PState for PStateMapper (PAN extension)

- v8.1-specific sysregs for SysRegMapper (LOR,VHE extensions)

Reviewers: jmolloy

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8496

Patch by Tom Coxon


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235089 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-16 12:15:27 +00:00
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