[PATCH] [Target/AArch64] Introduce OptimizeBarriersPass

[Renato Golin]

This seems like a plain copy of ARMOptimizeBarriersPass.cpp, minus the comments. I think we ought to avoid copy&paste as much as possible.

We should probably make this into a generic codegen pass.

cheers,
--renato


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9632

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