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

[Evgeniy Stepanov via llvm-commits]

eugenis created this revision.
eugenis added reviewers: pcc, ed.
eugenis added a subscriber: llvm-commits.
eugenis set the repository for this revision to rL LLVM.
Herald added subscribers: srhines, danalbert, tberghammer.

Add StackProtector to SafeStack.
This adds limited protection against data corruption in the caller frame.
Current implementation treats all stack protector levels as -fstack-protector-all.

This depends on a clang change to allow both safestack and ssp* attributes on the same function.


Repository:
  rL LLVM

http://reviews.llvm.org/D18846

Files:
  lib/CodeGen/SafeStack.cpp
  lib/CodeGen/StackProtector.cpp
  lib/IR/Attributes.cpp
  test/CodeGen/X86/safestack_ssp.ll
  test/Transforms/SafeStack/AArch64/abi_ssp.ll

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