Add OSSA test for CopyForwarding

Author: meg-gupta

test/SILOptimizer/copyforward.sil

@@ -91,7 +91,8 @@ bb0(%0 : $*T):
   %c1 = apply %f1<T>(%l1) : $@convention(thin) <τ_0_0> (@in τ_0_0) -> ()
   debug_value_addr %l1 : $*T
   dealloc_stack %l1 : $*T
-  // forwardPropagateCopy should cleanup debug_value_addr. See rdar
+  // forwardPropagateCopy should cleanup debug_value_addr. See rdar://66000188
+
   debug_value_addr %0 : $*T
   destroy_addr %0 : $*T
   %r1 = tuple ()
@@ -186,7 +187,7 @@ bb0(%0 : $*T):
   debug_value_addr %l1 : $*T
   copy_addr %l1 to [initialization] %0 : $*T
   debug_value_addr %0 : $*T
-  // backwardPropagateCopy should cleanup debug_value_addr. See rdar
+  // backwardPropagateCopy should cleanup debug_value_addr. See rdar://66000188
   debug_value_addr %l1 : $*T
   destroy_addr %l1 : $*T
   dealloc_stack %l1 : $*T