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GH-128685: Specialize (rather than quicken) LOAD_CONST into LOAD_CONST_[IM]MORTAL (GH-128708)

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Mark Shannon 2025-01-13 10:30:28 +00:00 • committed by GitHub
parent 29fe8072cf
commit ddd959987c
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14 changed files with 121 additions and 65 deletions
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Python/optimizer_bytecodes.c
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@ -479,6 +479,13 @@ dummy_func(void) {
value = sym_new_const(ctx, val);
}
op(_LOAD_CONST_MORTAL, (-- value)) {
PyObject *val = PyTuple_GET_ITEM(co->co_consts, this_instr->oparg);
int opcode = _Py_IsImmortal(val) ? _LOAD_CONST_INLINE_BORROW : _LOAD_CONST_INLINE;
REPLACE_OP(this_instr, opcode, 0, (uintptr_t)val);
value = sym_new_const(ctx, val);
}
op(_LOAD_CONST_IMMORTAL, (-- value)) {
PyObject *val = PyTuple_GET_ITEM(co->co_consts, this_instr->oparg);
REPLACE_OP(this_instr, _LOAD_CONST_INLINE_BORROW, 0, (uintptr_t)val);