[PATCH] Attach function attribute "arm-restrict-it" instead of passing arm-restrict-it as a backend-option

[Akira Hatanaka]

In http://reviews.llvm.org/D10414#191915, @echristo wrote:

> Another possibility is that this gets mapped as a normal command line option passed into cc1 and then it can just be a subtarget feature?


Would it look something like this in the IR?

"target-features"="+neon,+vfp3,arn-restrict-it=false"


http://reviews.llvm.org/D10414

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