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bpo-47120: Replace the JUMP_ABSOLUTE opcode by the relative JUMP_BACKWARD (GH-32115)

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Irit Katriel 2022-03-31 14:14:15 +01:00 • committed by GitHub
parent b36d222110
commit a00518d9ad
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15 changed files with 147 additions and 113 deletions
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6
Lib/dis.py
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@ -30,6 +30,7 @@ MAKE_FUNCTION_FLAGS = ('defaults', 'kwdefaults', 'annotations', 'closure')
LOAD_CONST = opmap['LOAD_CONST']
LOAD_GLOBAL = opmap['LOAD_GLOBAL']
BINARY_OP = opmap['BINARY_OP']
JUMP_BACKWARD = opmap['JUMP_BACKWARD']
CACHE = opmap["CACHE"]
@ -441,7 +442,8 @@ def _get_instructions_bytes(code, varname_from_oparg=None,
argval = arg*2
argrepr = "to " + repr(argval)
elif op in hasjrel:
argval = offset + 2 + arg*2
signed_arg = -arg if op == JUMP_BACKWARD else arg
argval = offset + 2 + signed_arg*2
argrepr = "to " + repr(argval)
elif op in haslocal or op in hasfree:
argval, argrepr = _get_name_info(arg, varname_from_oparg)
@ -566,6 +568,8 @@ def findlabels(code):
for offset, op, arg in _unpack_opargs(code):
if arg is not None:
if op in hasjrel:
if op == JUMP_BACKWARD:
arg = -arg
label = offset + 2 + arg*2
elif op in hasjabs:
label = arg*2