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GH-143732: SEND specialization (GH-148963)

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* SEND specialization. Adds 2 new specialized instructions:

* SEND_VIRTUAL: for sends to virtual iterators e.g lists and tuples
* SEND_ASYNC_GEN: for sends to async generators

Tweak FOR_ITER_VIRTUAL so that SEND_VIRTUAL and FOR_ITER_VIRTUAL use equivalent guards
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Mark Shannon 2026-05-05 15:19:16 +01:00 • committed by GitHub
parent ffb543d32f
commit 70bd1c2dd2
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29 changed files with 2662 additions and 1548 deletions
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25
Python/optimizer_bytecodes.c
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@ -2701,7 +2701,32 @@ dummy_func(void) {
stack_pointer = sym_set_stack_depth((int)this_instr->operand1, stack_pointer);
}
op(_GUARD_TOS_NOT_NULL, (null_or_index -- null_or_index)) {
if (sym_is_not_null(null_or_index)) {
REPLACE_OP(this_instr, _NOP, 0, 0);
}
else {
sym_set_non_null(null_or_index);
}
}
op(_GUARD_3OS_ASYNC_GEN_ASEND, (iter, null_or_index, value -- iter, null_or_index, value)) {
if (sym_matches_type(iter, &_PyAsyncGenASend_Type)) {
REPLACE_OP(this_instr, _NOP, 0, 0);
}
else {
sym_set_type(iter, &_PyAsyncGenASend_Type);
}
}
op(_GET_ANEXT, (aiter -- aiter, awaitable)) {
if (sym_matches_type(aiter, &PyAsyncGen_Type)) {
awaitable = sym_new_type(ctx, &_PyAsyncGenASend_Type);
}
else {
awaitable = sym_new_not_null(ctx);
}
}
// END BYTECODES //