[PATCH] [Inliner] Use whitelist instead of blacklist when checking function attribute compatibility and make the check stricter

[Eric Christopher]

Hi Akira,

I think for right now since it's fairly trivial to come up with a testcase that will run into problems we should do a quick conservative patch to the inliner first that will enable some progress - i.e. we should check the target-cpu and target-features strings and if they don't match exactly go ahead and reject in the inliner. This is, obviously, much less than optimal, but will get us to an iterative solution.

Thoughts?

-eric


http://reviews.llvm.org/D7802

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