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> The focus of Lua 5.4.0 is performance. We're especially interested in
> feedback about its performance but all feedback is welcome. Thanks.
> --lhf

In particular, we are interested in how our jump table implementation
behave in different platforms. It seems to hurt performance in some
systems. You can turn them on/off defining the flag LUA_USE_JUMPTABLE
to 1 or 0. The default is 1 when __GNUC__ is defined. Also, in some
systems you may get better performance with jump tables by turning
off some compiler optimizations, such as crossjumping.

-- Roberto