Add the IR attribute 'sspstrong'.

SSPStrong applies a heuristic to insert stack protectors in these situations:

* A Protector is required for functions which contain an array, regardless of
  type or length.

* A Protector is required for functions which contain a structure/union which
  contains an array, regardless of type or length.  Note, there is no limit to
  the depth of nesting.

* A protector is required when the address of a local variable (i.e., stack
  based variable) is exposed. (E.g., such as through a local whose address is
  taken as part of the RHS of an assignment or a local whose address is taken as
  part of a function argument.)

This patch implements the SSPString attribute to be equivalent to
SSPRequired. This will change in a subsequent patch.

llvm-svn: 173230

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/Target/CppBackend/CPPBackend.cpp b/llvm/lib/Target/CppBackend/CPPBackend.cpp
index f4688614342..50bfef5127a 100644
--- a/llvm/lib/Target/CppBackend/CPPBackend.cpp
+++ b/llvm/lib/Target/CppBackend/CPPBackend.cpp
@@ -499,6 +499,7 @@ void CppWriter::printAttributes(const AttributeSet &PAL,
       HANDLE_ATTR(OptimizeForSize);
       HANDLE_ATTR(StackProtect);
       HANDLE_ATTR(StackProtectReq);
+      HANDLE_ATTR(StackProtectStrong);
       HANDLE_ATTR(NoCapture);
       HANDLE_ATTR(NoRedZone);
       HANDLE_ATTR(NoImplicitFloat);