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bpo-47186: Replace JUMP_IF_NOT_EXC_MATCH by CHECK_EXC_MATCH + jump (GH-32231)

This commit is contained in:
Irit Katriel 2022-04-01 13:59:38 +01:00 committed by GitHub
parent ae9de82e32
commit 04e07c258f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 107 additions and 111 deletions
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18
Doc/library/dis.rst
View File

@ -628,6 +628,12 @@ iterations of the loop.
.. versionadded:: 3.11
.. opcode:: CHECK_EXC_MATCH
Performs exception matching for ``except``. Tests whether the TOS1 is an exception
matching TOS. Pops TOS and pushes the boolean result of the test.
.. versionadded:: 3.11
.. opcode:: WITH_EXCEPT_START
@ -916,18 +922,6 @@ iterations of the loop.
.. versionadded:: 3.1
.. opcode:: JUMP_IF_NOT_EXC_MATCH (target)
Performs exception matching for ``except``.
Tests whether the second value on the stack is an exception matching TOS,
and jumps if it is not. Pops one value from the stack.
.. versionadded:: 3.9
.. versionchanged:: 3.11
This opcode no longer pops the active exception.
.. opcode:: JUMP_IF_NOT_EG_MATCH (target)
Performs exception matching for ``except*``. Applies ``split(TOS)`` on

3
Doc/whatsnew/3.11.rst
View File

@ -520,7 +520,8 @@ CPython bytecode changes
* Add :opcode:`POP_JUMP_IF_NOT_NONE` and :opcode:`POP_JUMP_IF_NONE` opcodes to
speed up conditional jumps.
* :opcode:`JUMP_IF_NOT_EXC_MATCH` no longer pops the active exception.
* Replaced :opcode:`JUMP_IF_NOT_EXC_MATCH` by :opcode:`CHECK_EXC_MATCH` which
performs the check but does not jump.
* Replaced :opcode:`JUMP_ABSOLUTE` by the relative :opcode:`JUMP_BACKWARD`.

72
Include/opcode.h generated
View File

@ -21,6 +21,7 @@ extern "C" {
#define MATCH_SEQUENCE 32
#define MATCH_KEYS 33
#define PUSH_EXC_INFO 35
#define CHECK_EXC_MATCH 36
#define WITH_EXCEPT_START 49
#define GET_AITER 50
#define GET_ANEXT 51
@ -74,7 +75,6 @@ extern "C" {
#define CONTAINS_OP 118
#define RERAISE 119
#define COPY 120
#define JUMP_IF_NOT_EXC_MATCH 121
#define BINARY_OP 122
#define SEND 123
#define LOAD_FAST 124
@ -136,39 +136,39 @@ extern "C" {
#define COMPARE_OP_INT_JUMP 28
#define COMPARE_OP_STR_JUMP 29
#define JUMP_BACKWARD_QUICK 34
#define LOAD_ATTR_ADAPTIVE 36
#define LOAD_ATTR_INSTANCE_VALUE 37
#define LOAD_ATTR_MODULE 38
#define LOAD_ATTR_SLOT 39
#define LOAD_ATTR_WITH_HINT 40
#define LOAD_CONST__LOAD_FAST 41
#define LOAD_FAST__LOAD_CONST 42
#define LOAD_FAST__LOAD_FAST 43
#define LOAD_GLOBAL_ADAPTIVE 44
#define LOAD_GLOBAL_BUILTIN 45
#define LOAD_GLOBAL_MODULE 46
#define LOAD_METHOD_ADAPTIVE 47
#define LOAD_METHOD_CLASS 48
#define LOAD_METHOD_MODULE 55
#define LOAD_METHOD_NO_DICT 56
#define LOAD_METHOD_WITH_DICT 57
#define LOAD_METHOD_WITH_VALUES 58
#define PRECALL_ADAPTIVE 59
#define PRECALL_BOUND_METHOD 62
#define PRECALL_BUILTIN_CLASS 63
#define PRECALL_BUILTIN_FAST_WITH_KEYWORDS 64
#define PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS 65
#define PRECALL_NO_KW_BUILTIN_FAST 66
#define PRECALL_NO_KW_BUILTIN_O 67
#define PRECALL_NO_KW_ISINSTANCE 72
#define PRECALL_NO_KW_LEN 73
#define PRECALL_NO_KW_LIST_APPEND 76
#define PRECALL_NO_KW_METHOD_DESCRIPTOR_FAST 77
#define PRECALL_NO_KW_METHOD_DESCRIPTOR_NOARGS 78
#define PRECALL_NO_KW_METHOD_DESCRIPTOR_O 79
#define PRECALL_NO_KW_STR_1 80
#define PRECALL_NO_KW_TUPLE_1 81
#define PRECALL_NO_KW_TYPE_1 113
#define LOAD_ATTR_ADAPTIVE 37
#define LOAD_ATTR_INSTANCE_VALUE 38
#define LOAD_ATTR_MODULE 39
#define LOAD_ATTR_SLOT 40
#define LOAD_ATTR_WITH_HINT 41
#define LOAD_CONST__LOAD_FAST 42
#define LOAD_FAST__LOAD_CONST 43
#define LOAD_FAST__LOAD_FAST 44
#define LOAD_GLOBAL_ADAPTIVE 45
#define LOAD_GLOBAL_BUILTIN 46
#define LOAD_GLOBAL_MODULE 47
#define LOAD_METHOD_ADAPTIVE 48
#define LOAD_METHOD_CLASS 55
#define LOAD_METHOD_MODULE 56
#define LOAD_METHOD_NO_DICT 57
#define LOAD_METHOD_WITH_DICT 58
#define LOAD_METHOD_WITH_VALUES 59
#define PRECALL_ADAPTIVE 62
#define PRECALL_BOUND_METHOD 63
#define PRECALL_BUILTIN_CLASS 64
#define PRECALL_BUILTIN_FAST_WITH_KEYWORDS 65
#define PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS 66
#define PRECALL_NO_KW_BUILTIN_FAST 67
#define PRECALL_NO_KW_BUILTIN_O 72
#define PRECALL_NO_KW_ISINSTANCE 73
#define PRECALL_NO_KW_LEN 76
#define PRECALL_NO_KW_LIST_APPEND 77
#define PRECALL_NO_KW_METHOD_DESCRIPTOR_FAST 78
#define PRECALL_NO_KW_METHOD_DESCRIPTOR_NOARGS 79
#define PRECALL_NO_KW_METHOD_DESCRIPTOR_O 80
#define PRECALL_NO_KW_STR_1 81
#define PRECALL_NO_KW_TUPLE_1 113
#define PRECALL_NO_KW_TYPE_1 121
#define PRECALL_PYFUNC 141
#define RESUME_QUICK 143
#define STORE_ATTR_ADAPTIVE 150
@ -205,7 +205,7 @@ static const uint32_t _PyOpcode_Jump[8] = {
0U,
0U,
536870912U,
2316156928U,
2282602496U,
4163U,
0U,
0U,
@ -259,6 +259,7 @@ const uint8_t _PyOpcode_Deopt[256] = {
[CALL_FUNCTION_EX] = CALL_FUNCTION_EX,
[CALL_PY_EXACT_ARGS] = CALL,
[CALL_PY_WITH_DEFAULTS] = CALL,
[CHECK_EXC_MATCH] = CHECK_EXC_MATCH,
[COMPARE_OP] = COMPARE_OP,
[COMPARE_OP_ADAPTIVE] = COMPARE_OP,
[COMPARE_OP_FLOAT_JUMP] = COMPARE_OP,
@ -294,7 +295,6 @@ const uint8_t _PyOpcode_Deopt[256] = {
[JUMP_FORWARD] = JUMP_FORWARD,
[JUMP_IF_FALSE_OR_POP] = JUMP_IF_FALSE_OR_POP,
[JUMP_IF_NOT_EG_MATCH] = JUMP_IF_NOT_EG_MATCH,
[JUMP_IF_NOT_EXC_MATCH] = JUMP_IF_NOT_EXC_MATCH,
[JUMP_IF_TRUE_OR_POP] = JUMP_IF_TRUE_OR_POP,
[JUMP_NO_INTERRUPT] = JUMP_NO_INTERRUPT,
[KW_NAMES] = KW_NAMES,

3
Lib/importlib/_bootstrap_external.py
View File

@ -397,6 +397,7 @@ _code_type = type(_write_atomic.__code__)
# Python 3.11a6 3487 (Remove the adaptive "oparg counter" mechanism)
# Python 3.11a6 3488 (LOAD_GLOBAL can push additional NULL)
# Python 3.11a6 3489 (Add JUMP_BACKWARD, remove JUMP_ABSOLUTE)
# Python 3.11a6 3490 (remove JUMP_IF_NOT_EXC_MATCH, add CHECK_EXC_MATCH)
# Python 3.12 will start with magic number 3500
@ -411,7 +412,7 @@ _code_type = type(_write_atomic.__code__)
# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
# in PC/launcher.c must also be updated.
MAGIC_NUMBER = (3489).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3490).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
_PYCACHE = '__pycache__'

2
Lib/opcode.py
View File

@ -76,6 +76,7 @@ def_op('MATCH_SEQUENCE', 32)
def_op('MATCH_KEYS', 33)
def_op('PUSH_EXC_INFO', 35)
def_op('CHECK_EXC_MATCH', 36)
def_op('WITH_EXCEPT_START', 49)
def_op('GET_AITER', 50)
@ -138,7 +139,6 @@ def_op('IS_OP', 117)
def_op('CONTAINS_OP', 118)
def_op('RERAISE', 119)
def_op('COPY', 120)
jabs_op('JUMP_IF_NOT_EXC_MATCH', 121)
def_op('BINARY_OP', 122, 1)
jrel_op('SEND', 123) # Number of bytes to skip
def_op('LOAD_FAST', 124) # Local variable number

85
Lib/test/test_dis.py
View File

@ -372,7 +372,8 @@ dis_traceback = """\
>> PUSH_EXC_INFO
%3d LOAD_GLOBAL 0 (Exception)
JUMP_IF_NOT_EXC_MATCH 35 (to 70)
CHECK_EXC_MATCH
POP_JUMP_IF_FALSE 36 (to 72)
STORE_FAST 0 (e)
%3d LOAD_FAST 0 (e)
@ -683,8 +684,7 @@ class DisTests(DisTestBase):
def test_widths(self):
for opcode, opname in enumerate(dis.opname):
if opname in ('BUILD_MAP_UNPACK_WITH_CALL',
'BUILD_TUPLE_UNPACK_WITH_CALL',
'JUMP_IF_NOT_EXC_MATCH'):
'BUILD_TUPLE_UNPACK_WITH_CALL'):
continue
with self.subTest(opname=opname):
width = dis._OPNAME_WIDTH
@ -1299,47 +1299,48 @@ expected_opinfo_jumpy = [
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=322, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=324, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=326, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='JUMP_FORWARD', opcode=110, arg=30, argval=390, argrepr='to 390', offset=328, starts_line=None, is_jump_target=True, positions=None),
Instruction(opname='JUMP_FORWARD', opcode=110, arg=31, argval=392, argrepr='to 392', offset=328, starts_line=None, is_jump_target=True, positions=None),
Instruction(opname='PUSH_EXC_INFO', opcode=35, arg=None, argval=None, argrepr='', offset=330, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=4, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=332, starts_line=22, is_jump_target=False, positions=None),
Instruction(opname='JUMP_IF_NOT_EXC_MATCH', opcode=121, arg=191, argval=382, argrepr='to 382', offset=344, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=346, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=348, starts_line=23, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=360, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=362, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=366, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=376, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=378, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='JUMP_FORWARD', opcode=110, arg=21, argval=424, argrepr='to 424', offset=380, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=0, argval=0, argrepr='', offset=382, starts_line=22, is_jump_target=True, positions=None),
Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=384, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=386, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=388, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=390, starts_line=28, is_jump_target=True, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=402, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=404, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=408, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=418, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=420, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=422, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='NOP', opcode=9, arg=None, argval=None, argrepr='', offset=424, starts_line=23, is_jump_target=True, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=426, starts_line=28, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=438, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=440, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=444, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=454, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=456, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=458, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PUSH_EXC_INFO', opcode=35, arg=None, argval=None, argrepr='', offset=460, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=462, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=474, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=476, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=480, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=490, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=0, argval=0, argrepr='', offset=492, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=494, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=496, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=498, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CHECK_EXC_MATCH', opcode=36, arg=None, argval=None, argrepr='', offset=344, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=192, argval=384, argrepr='to 384', offset=346, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=348, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=350, starts_line=23, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=362, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=364, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=368, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=378, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=380, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='JUMP_FORWARD', opcode=110, arg=21, argval=426, argrepr='to 426', offset=382, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=0, argval=0, argrepr='', offset=384, starts_line=22, is_jump_target=True, positions=None),
Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=386, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=388, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=390, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=392, starts_line=28, is_jump_target=True, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=404, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=406, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=410, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=420, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=422, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=424, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='NOP', opcode=9, arg=None, argval=None, argrepr='', offset=426, starts_line=23, is_jump_target=True, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=428, starts_line=28, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=440, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=442, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=446, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=456, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=458, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=460, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PUSH_EXC_INFO', opcode=35, arg=None, argval=None, argrepr='', offset=462, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=464, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=476, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='PRECALL', opcode=166, arg=1, argval=1, argrepr='', offset=478, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=482, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=492, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=0, argval=0, argrepr='', offset=494, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=496, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=498, starts_line=None, is_jump_target=False, positions=None),
Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=500, starts_line=None, is_jump_target=False, positions=None),
]
# One last piece of inspect fodder to check the default line number handling

1
Misc/NEWS.d/next/Core and Builtins/2022-04-01-11-53-59.bpo-47186.RBCPk8.rst Normal file
View File

@ -0,0 +1 @@
Replace :opcode:`JUMP_IF_NOT_EXC_MATCH` by :opcode:`CHECK_EXC_MATCH` + jump.

4
Objects/frameobject.c
View File

@ -207,7 +207,6 @@ mark_stacks(PyCodeObject *code_obj, int len)
case JUMP_IF_TRUE_OR_POP:
case POP_JUMP_IF_FALSE:
case POP_JUMP_IF_TRUE:
case JUMP_IF_NOT_EXC_MATCH:
case JUMP_IF_NOT_EG_MATCH:
{
int64_t target_stack;
@ -216,8 +215,7 @@ mark_stacks(PyCodeObject *code_obj, int len)
if (stacks[j] == UNINITIALIZED && j < i) {
todo = 1;
}
if (opcode == JUMP_IF_NOT_EXC_MATCH ||
opcode == JUMP_IF_NOT_EG_MATCH)
if (opcode == JUMP_IF_NOT_EG_MATCH)
{
next_stack = pop_value(pop_value(next_stack));
target_stack = next_stack;

6
Python/ceval.c
View File

@ -3853,7 +3853,7 @@ handle_eval_breaker:
DISPATCH();
}
TARGET(JUMP_IF_NOT_EXC_MATCH) {
TARGET(CHECK_EXC_MATCH) {
PyObject *right = POP();
PyObject *left = TOP();
assert(PyExceptionInstance_Check(left));
@ -3864,9 +3864,7 @@ handle_eval_breaker:
int res = PyErr_GivenExceptionMatches(left, right);
Py_DECREF(right);
if (res == 0) {
JUMPTO(oparg);
}
PUSH(Py_NewRef(res ? Py_True : Py_False));
DISPATCH();
}

10
Python/compile.c
View File

@ -977,8 +977,8 @@ stack_effect(int opcode, int oparg, int jump)
case IS_OP:
case CONTAINS_OP:
return -1;
case JUMP_IF_NOT_EXC_MATCH:
return -1;
case CHECK_EXC_MATCH:
return 0;
case JUMP_IF_NOT_EG_MATCH:
return jump > 0 ? -1 : 0;
case IMPORT_NAME:
@ -3352,7 +3352,8 @@ compiler_try_star_finally(struct compiler *c, stmt_ty s)
[] JUMP L0
[exc] L1: <evaluate E1> )
[exc, E1] JUMP_IF_NOT_EXC_MATCH L2 ) only if E1
[exc, E1] CHECK_EXC_MATCH )
[exc, bool] POP_JUMP_IF_FALSE L2 ) only if E1
[exc] <assign to V1> (or POP if no V1)
[] <code for S1>
JUMP L0
@ -3410,7 +3411,8 @@ compiler_try_except(struct compiler *c, stmt_ty s)
return 0;
if (handler->v.ExceptHandler.type) {
VISIT(c, expr, handler->v.ExceptHandler.type);
ADDOP_JUMP(c, JUMP_IF_NOT_EXC_MATCH, except);
ADDOP(c, CHECK_EXC_MATCH);
ADDOP_JUMP(c, POP_JUMP_IF_FALSE, except);
}
if (handler->v.ExceptHandler.name) {
basicblock *cleanup_end, *cleanup_body;

14
Python/opcode_targets.h generated
View File

@ -35,6 +35,7 @@ static void *opcode_targets[256] = {
&&TARGET_MATCH_KEYS,
&&TARGET_JUMP_BACKWARD_QUICK,
&&TARGET_PUSH_EXC_INFO,
&&TARGET_CHECK_EXC_MATCH,
&&TARGET_LOAD_ATTR_ADAPTIVE,
&&TARGET_LOAD_ATTR_INSTANCE_VALUE,
&&TARGET_LOAD_ATTR_MODULE,
@ -47,40 +48,39 @@ static void *opcode_targets[256] = {
&&TARGET_LOAD_GLOBAL_BUILTIN,
&&TARGET_LOAD_GLOBAL_MODULE,
&&TARGET_LOAD_METHOD_ADAPTIVE,
&&TARGET_LOAD_METHOD_CLASS,
&&TARGET_WITH_EXCEPT_START,
&&TARGET_GET_AITER,
&&TARGET_GET_ANEXT,
&&TARGET_BEFORE_ASYNC_WITH,
&&TARGET_BEFORE_WITH,
&&TARGET_END_ASYNC_FOR,
&&TARGET_LOAD_METHOD_CLASS,
&&TARGET_LOAD_METHOD_MODULE,
&&TARGET_LOAD_METHOD_NO_DICT,
&&TARGET_LOAD_METHOD_WITH_DICT,
&&TARGET_LOAD_METHOD_WITH_VALUES,
&&TARGET_PRECALL_ADAPTIVE,
&&TARGET_STORE_SUBSCR,
&&TARGET_DELETE_SUBSCR,
&&TARGET_PRECALL_ADAPTIVE,
&&TARGET_PRECALL_BOUND_METHOD,
&&TARGET_PRECALL_BUILTIN_CLASS,
&&TARGET_PRECALL_BUILTIN_FAST_WITH_KEYWORDS,
&&TARGET_PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS,
&&TARGET_PRECALL_NO_KW_BUILTIN_FAST,
&&TARGET_PRECALL_NO_KW_BUILTIN_O,
&&TARGET_GET_ITER,
&&TARGET_GET_YIELD_FROM_ITER,
&&TARGET_PRINT_EXPR,
&&TARGET_LOAD_BUILD_CLASS,
&&TARGET_PRECALL_NO_KW_BUILTIN_O,
&&TARGET_PRECALL_NO_KW_ISINSTANCE,
&&TARGET_PRECALL_NO_KW_LEN,
&&TARGET_LOAD_ASSERTION_ERROR,
&&TARGET_RETURN_GENERATOR,
&&TARGET_PRECALL_NO_KW_LEN,
&&TARGET_PRECALL_NO_KW_LIST_APPEND,
&&TARGET_PRECALL_NO_KW_METHOD_DESCRIPTOR_FAST,
&&TARGET_PRECALL_NO_KW_METHOD_DESCRIPTOR_NOARGS,
&&TARGET_PRECALL_NO_KW_METHOD_DESCRIPTOR_O,
&&TARGET_PRECALL_NO_KW_STR_1,
&&TARGET_PRECALL_NO_KW_TUPLE_1,
&&TARGET_LIST_TO_TUPLE,
&&TARGET_RETURN_VALUE,
&&TARGET_IMPORT_STAR,
@ -112,7 +112,7 @@ static void *opcode_targets[256] = {
&&TARGET_JUMP_FORWARD,
&&TARGET_JUMP_IF_FALSE_OR_POP,
&&TARGET_JUMP_IF_TRUE_OR_POP,
&&TARGET_PRECALL_NO_KW_TYPE_1,
&&TARGET_PRECALL_NO_KW_TUPLE_1,
&&TARGET_POP_JUMP_IF_FALSE,
&&TARGET_POP_JUMP_IF_TRUE,
&&TARGET_LOAD_GLOBAL,
@ -120,7 +120,7 @@ static void *opcode_targets[256] = {
&&TARGET_CONTAINS_OP,
&&TARGET_RERAISE,
&&TARGET_COPY,
&&TARGET_JUMP_IF_NOT_EXC_MATCH,
&&TARGET_PRECALL_NO_KW_TYPE_1,
&&TARGET_BINARY_OP,
&&TARGET_SEND,
&&TARGET_LOAD_FAST,