[issue43684] Add combined opcodes

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

We usually rejected such propositions unless there were evidences of significant effect on performance. I myself withdrawn several my patches after analyzing statistics.

What percent of opcodes will be ADD_INT in the compiled bytecode? What percent of executed opcodes will be ADD_INT? Compare it with other opcodes, in particularly BINARY_ADD. What are microbenchmark results?

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nosy: +serhiy.storchaka

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