It's already there on x64. Note that to fully take advantage of it, the optimization layer above it that does type specialization also needs work (eg some opti

It's already there on x64. Note that to fully take advantage of it, the optimization layer above it that does type specialization also needs work (eg some optimizations were lost during the 'Great List Refactor', a semantic change that was set as one of the blockers for the 6.0 release).