[1.4>master] [MERGE #2579 @rajatd] Add missing legalization for XOR
[1.4>master] [MERGE #2579 @rajatd] Add missing legalization for XOR

Merge pull request #2579 from rajatd:legalization-fix

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