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GH-125837: Split LOAD_CONST into three. (GH-125972)

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* Add LOAD_CONST_IMMORTAL opcode

* Add LOAD_SMALL_INT opcode

* Remove RETURN_CONST opcode
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Mark Shannon 2024-10-29 11:15:42 +00:00 • committed by GitHub
parent 67f5c5bd6f
commit faa3272fb8
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33 changed files with 706 additions and 538 deletions
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Python/codegen.c
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@ -280,6 +280,14 @@ codegen_addop_noarg(instr_sequence *seq, int opcode, location loc)
static int
codegen_addop_load_const(compiler *c, location loc, PyObject *o)
{
if (PyLong_CheckExact(o)) {
int overflow;
long val = PyLong_AsLongAndOverflow(o, &overflow);
if (!overflow && val >= 0 && val < 256 && val < _PY_NSMALLPOSINTS) {
ADDOP_I(c, loc, LOAD_SMALL_INT, val);
return SUCCESS;
}
}
Py_ssize_t arg = _PyCompile_AddConst(c, o);
if (arg < 0) {
return ERROR;
@ -656,6 +664,9 @@ codegen_setup_annotations_scope(compiler *c, location loc,
codegen_enter_scope(c, name, COMPILE_SCOPE_ANNOTATIONS,
key, loc.lineno, NULL, &umd));
// Insert None into consts to prevent an annotation
// appearing to be a docstring
_PyCompile_AddConst(c, Py_None);
// if .format != 1: raise NotImplementedError
_Py_DECLARE_STR(format, ".format");
ADDOP_I(c, loc, LOAD_FAST, 0);