[PATCH] D18846: [safestack] Add canary to unsafe stack frames

[Evgeniy Stepanov via llvm-commits]

eugenis added a comment.

moveStaticAllocasToUnsafeStack must be called once per function.

Also, there may be no unsafe stack frame at all, then there would be no need for the guard at all. SafeStack is currently smarter about this than StackProtector; it uses SCEV to prove that allocas can never overflow.


Repository:
  rL LLVM

http://reviews.llvm.org/D18846