[SPARC] [SSP] Add support for LOAD_STACK_GUARD.

This fixes PR22248 on sparc.

Differential Revision: http://reviews.llvm.org/D19386

llvm-svn: 267545
diff --git a/llvm/lib/Target/Sparc/SparcISelLowering.h b/llvm/lib/Target/Sparc/SparcISelLowering.h
index 5eee611..42a71d8 100644
--- a/llvm/lib/Target/Sparc/SparcISelLowering.h
+++ b/llvm/lib/Target/Sparc/SparcISelLowering.h
@@ -103,6 +103,10 @@
       return SP::I1;
     }
 
+    /// Override to support customized stack guard loading.
+    bool useLoadStackGuardNode() const override;
+    void insertSSPDeclarations(Module &M) const override;
+
     /// getSetCCResultType - Return the ISD::SETCC ValueType
     EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context,
                            EVT VT) const override;