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GH-113710: Add a "globals to constants" pass (GH-114592)

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Converts specializations of `LOAD_GLOBAL` into constants during tier 2 optimization.
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Mark Shannon 2024-02-02 12:14:34 +00:00 • committed by GitHub
parent 2091fb2a85
commit 0e71a295e9
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16 changed files with 375 additions and 55 deletions
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24
Python/bytecodes.c
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@ -4071,13 +4071,37 @@ dummy_func(
}
op(_LOAD_CONST_INLINE, (ptr/4 -- value)) {
TIER_TWO_ONLY
value = Py_NewRef(ptr);
}
op(_LOAD_CONST_INLINE_BORROW, (ptr/4 -- value)) {
TIER_TWO_ONLY
value = ptr;
}
op(_LOAD_CONST_INLINE_WITH_NULL, (ptr/4 -- value, null)) {
TIER_TWO_ONLY
value = Py_NewRef(ptr);
null = NULL;
}
op(_LOAD_CONST_INLINE_BORROW_WITH_NULL, (ptr/4 -- value, null)) {
TIER_TWO_ONLY
value = ptr;
null = NULL;
}
op(_CHECK_GLOBALS, (dict/4 -- )) {
TIER_TWO_ONLY
DEOPT_IF(GLOBALS() != dict);
}
op(_CHECK_BUILTINS, (dict/4 -- )) {
TIER_TWO_ONLY
DEOPT_IF(BUILTINS() != dict);
}
/* Internal -- for testing executors */
op(_INTERNAL_INCREMENT_OPT_COUNTER, (opt --)) {
_PyCounterOptimizerObject *exe = (_PyCounterOptimizerObject *)opt;