[1.7>master] [MERGE #4100 @obastemur] [optional] Improve OS14363556
[1.7>master] [MERGE #4100 @obastemur] [optional] Improve OS14363556

Merge pull request #4100 from obastemur:rem_xor

Discussion is on VSO.

mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore