[perl #38593] [TODO] JIT compiler improvements
Leopold Toetsch
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The JIT compiler tools/build/jit2h.pl creates src/{jit,exec}_cpu.c from
src/jit/*/core.jit by expanding some macros and templates, creating JIT
opcode functions and generating a table of these.
There are several possibilities for improvements, but be warned - some
are hard(er).
Easy bits:
*) jit2h.pl doesn't create a .h file - a better util name couldn't harm
*) warn about an attempt to create non-existing opcodes
I had e.g. defined Parrot_sqrt_n but there is no such opcode sqrt_n
(it's sqrt_n_n).
The JIT compiler should emit a warning for such cases
*) tidy perl code - only the visuals - no functional changes
Hard ones:
*) unify macros across architectures and jit/exec
jit/exec has some differences but not that much as handled inside
jit2h.pl
*) cleanup jit2h.pl functionality
the code is a mess with a lot of addons and exceptions
All need testing on ppc and x86 to verify changes with 'make testj'.
(exec is for sure broken but fixable later).
Thanks,
leo
