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54 Commits

Author SHA1 Message Date
Evgeniy Stepanov
01d7218552 [safestack] Fixup llvm.dbg.value when rewriting unsafe allocas. 
When moving unsafe allocas to the unsafe stack, dbg.declare intrinsics are
updated to refer to the new location.

This change does the same to dbg.value intrinsics.

llvm-svn: 272968
 2016-06-16 22:34:00 +00:00
Evgeniy Stepanov
b10de1bbaa [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.

llvm-svn: 266004
 2016-04-11 22:27:48 +00:00
Anna Zaks
b310adabbe [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

llvm-svn: 259447
 2016-02-02 01:03:11 +00:00
Benjamin Kramer
c98a806c74 Move SafeStack to CodeGen. 
It depends on the target machinery, that's not available for
instrumentation passes.

llvm-svn: 258942
 2016-01-27 16:53:42 +00:00