[PATCH] [asan] Speed up interesting alloca checks

[Kostya Serebryany]

LGTM (with a nit about {})

> > We currently do not run an instruction visitor in the very beginning of the pass

> 


Yes, indeed.


http://reviews.llvm.org/D8639

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/