[3.10] bpo-45116: Shrink interpreter by targetted revert of #25244 #28475
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…uces size of each opocde in interpreter.
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pablogsal
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By moving the pre-dispatch code (saving lasti, checking for tracing and advancing the instruction pointer) to just before the switch we save (N-1) copies of it (where N is the number of opcodes).
https://bugs.python.org/issue45116