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gh-130704: Strength reduce LOAD_FAST{_LOAD_FAST} (#130708)

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Optimize `LOAD_FAST` opcodes into faster versions that load borrowed references onto the operand stack when we can prove that the lifetime of the local outlives the lifetime of the temporary that is loaded onto the stack.
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mpage 2025-04-01 10:18:42 -07:00 • committed by GitHub
parent e9556e1004
commit 053c285f6b
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GPG key ID: B5690EEEBB952194
35 changed files with 1282 additions and 345 deletions
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10
Python/opcode_targets.h generated
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@ -84,6 +84,8 @@ static void *opcode_targets[256] = {
&&TARGET_LOAD_DEREF,
&&TARGET_LOAD_FAST,
&&TARGET_LOAD_FAST_AND_CLEAR,
&&TARGET_LOAD_FAST_BORROW,
&&TARGET_LOAD_FAST_BORROW_LOAD_FAST_BORROW,
&&TARGET_LOAD_FAST_CHECK,
&&TARGET_LOAD_FAST_LOAD_FAST,
&&TARGET_LOAD_FROM_DICT_OR_DEREF,
@ -126,8 +128,6 @@ static void *opcode_targets[256] = {
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&TARGET_RESUME,
&&TARGET_BINARY_OP_ADD_FLOAT,
&&TARGET_BINARY_OP_ADD_INT,
@ -414,6 +414,8 @@ Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_CONST_MORTAL(TAIL_CALL_PARA
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_DEREF(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FAST(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FAST_AND_CLEAR(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FAST_BORROW(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FAST_BORROW_LOAD_FAST_BORROW(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FAST_CHECK(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FAST_LOAD_FAST(TAIL_CALL_PARAMS);
Py_PRESERVE_NONE_CC static PyObject *_TAIL_CALL_LOAD_FROM_DICT_OR_DEREF(TAIL_CALL_PARAMS);
@ -648,6 +650,8 @@ static py_tail_call_funcptr INSTRUCTION_TABLE[256] = {
[LOAD_DEREF] = _TAIL_CALL_LOAD_DEREF,
[LOAD_FAST] = _TAIL_CALL_LOAD_FAST,
[LOAD_FAST_AND_CLEAR] = _TAIL_CALL_LOAD_FAST_AND_CLEAR,
[LOAD_FAST_BORROW] = _TAIL_CALL_LOAD_FAST_BORROW,
[LOAD_FAST_BORROW_LOAD_FAST_BORROW] = _TAIL_CALL_LOAD_FAST_BORROW_LOAD_FAST_BORROW,
[LOAD_FAST_CHECK] = _TAIL_CALL_LOAD_FAST_CHECK,
[LOAD_FAST_LOAD_FAST] = _TAIL_CALL_LOAD_FAST_LOAD_FAST,
[LOAD_FROM_DICT_OR_DEREF] = _TAIL_CALL_LOAD_FROM_DICT_OR_DEREF,
@ -725,8 +729,6 @@ static py_tail_call_funcptr INSTRUCTION_TABLE[256] = {
[UNPACK_SEQUENCE_TWO_TUPLE] = _TAIL_CALL_UNPACK_SEQUENCE_TWO_TUPLE,
[WITH_EXCEPT_START] = _TAIL_CALL_WITH_EXCEPT_START,
[YIELD_VALUE] = _TAIL_CALL_YIELD_VALUE,
[117] = _TAIL_CALL_UNKNOWN_OPCODE,
[118] = _TAIL_CALL_UNKNOWN_OPCODE,
[119] = _TAIL_CALL_UNKNOWN_OPCODE,
[120] = _TAIL_CALL_UNKNOWN_OPCODE,
[121] = _TAIL_CALL_UNKNOWN_OPCODE,