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3 Commits

Author SHA1 Message Date
Evgeniy Stepanov
00cd59a292 [safestack] Add canary to unsafe stack frames 
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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266004 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-04-11 22:27:48 +00:00
Anna Zaks
59203823d7 [safestack] Make sure the unsafe stack pointer is popped in all cases 
The unsafe stack pointer is only popped in moveStaticAllocasToUnsafeStack so it won't happen if there are no static allocas.

Fixes https://llvm.org/bugs/show_bug.cgi?id=26122

Differential Revision: http://reviews.llvm.org/D16339

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259447 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-02 01:03:11 +00:00
Benjamin Kramer
b714d34a7e Move SafeStack to CodeGen. 
It depends on the target machinery, that's not available for
instrumentation passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258942 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-27 16:53:42 +00:00