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More work on CFA for try-finally in the presence of loops.

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This commit is contained in:
Jon Riehl 2013-05-15 18:40:44 -05:00
commit c5d95e01e1
3 changed files with 288 additions and 35 deletions
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8
llpython/opcode_util.py
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@ -9,9 +9,11 @@ import opcode
# Note that opcode.hasjrel and opcode.hasjabs applies only to opcodes
# that calculate a jump point based on the argument. This ignores
# jumps that use the frame stack to calculate their targets.
# jumps that use the frame stack to calculate their targets, and
# exceptions.
NON_ARG_JUMP_NAMES = 'BREAK_LOOP', 'RETURN_VALUE', 'END_FINALLY'
NON_ARG_JUMP_NAMES = ('BREAK_LOOP', 'RETURN_VALUE', 'END_FINALLY',
'RAISE_VARARGS')
NON_ARG_JUMPS = [opcode.opmap[opname]
for opname in NON_ARG_JUMP_NAMES
if opname in opcode.opmap]
@ -118,7 +120,7 @@ OPCODE_MAP = {
'PRINT_ITEM_TO': (2, None, 1),
'PRINT_NEWLINE': (0, None, 1),
'PRINT_NEWLINE_TO': (1, None, 1),
'RAISE_VARARGS': (None, None, None),
'RAISE_VARARGS': (-1, None, 1),
'RETURN_VALUE': (1, None, 1),
'ROT_FOUR': (None, None, None),
'ROT_THREE': (None, None, None),