[PATCH] Use function attribute "arm-restrict-it"

[Renato Golin]

In http://reviews.llvm.org/D10416#191097, @echristo wrote:

> We've always had two options for this sort of thing, just much more
>  horribly implemented. :)


I see. It is hidden, and it has the exact same behaviour (tri-state, isARMv8() on default, implemented in the same function), so I guess it's ok.

The chances that people will abuse of this relationship or will change one and not the other is indeed, minimal.

cheers,
--renato


http://reviews.llvm.org/D10416

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