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GH-87849: Simplify stack effect of SEND and specialize it for generators and coroutines. (GH-101788)

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Mark Shannon 2023-02-13 11:24:55 +00:00 • committed by GitHub
parent a1f08f5f19
commit 160f2fe2b9
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15 changed files with 191 additions and 105 deletions
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9
Lib/dis.py
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@ -39,6 +39,7 @@ LOAD_GLOBAL = opmap['LOAD_GLOBAL']
BINARY_OP = opmap['BINARY_OP']
JUMP_BACKWARD = opmap['JUMP_BACKWARD']
FOR_ITER = opmap['FOR_ITER']
SEND = opmap['SEND']
LOAD_ATTR = opmap['LOAD_ATTR']
CACHE = opmap["CACHE"]
@ -453,6 +454,7 @@ def _get_instructions_bytes(code, varname_from_oparg=None,
argrepr = ''
positions = Positions(*next(co_positions, ()))
deop = _deoptop(op)
caches = _inline_cache_entries[deop]
if arg is not None:
# Set argval to the dereferenced value of the argument when
# available, and argrepr to the string representation of argval.
@ -478,8 +480,7 @@ def _get_instructions_bytes(code, varname_from_oparg=None,
elif deop in hasjrel:
signed_arg = -arg if _is_backward_jump(deop) else arg
argval = offset + 2 + signed_arg*2
if deop == FOR_ITER:
argval += 2
argval += 2 * caches
argrepr = "to " + repr(argval)
elif deop in haslocal or deop in hasfree:
argval, argrepr = _get_name_info(arg, varname_from_oparg)
@ -633,12 +634,12 @@ def findlabels(code):
for offset, op, arg in _unpack_opargs(code):
if arg is not None:
deop = _deoptop(op)
caches = _inline_cache_entries[deop]
if deop in hasjrel:
if _is_backward_jump(deop):
arg = -arg
label = offset + 2 + arg*2
if deop == FOR_ITER:
label += 2
label += 2 * caches
elif deop in hasjabs:
label = arg*2
else: