Disable GenericSpecializer for borrow accessors in OSSA temporarily

Author: meg-gupta

lib/SILOptimizer/Transforms/GenericSpecializer.cpp

@@ -107,6 +107,15 @@ bool swift::specializeAppliesInFunction(SILFunction &F,
       if (!Callee)
         continue;
 
+      // TODO: Enable GenericSpecializer for borrow accessors in OSSA
+      // Currently disabled since GenericSpecializer generates store_borrow to a
+      // temporary stack location and returns a projection from the
+      // store_borrow. This does not work for borrow accessors that return the
+      // projection from within the store_borrow scope.
+      if (F.hasOwnership() && Callee->getConventions().hasGuaranteedAddressResults()) {
+        continue;
+      }
+
       FunctionBuilder.getModule().performOnceForPrespecializedImportedExtensions(
         [&FunctionBuilder](AbstractFunctionDecl *pre) {
         transferSpecializeAttributeTargets(FunctionBuilder.getModule(), FunctionBuilder,