mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
25 lines
327 B
Python
25 lines
327 B
Python
from opcodes import EQ, ISZERO, SUB
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from rule import Rule
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from z3 import BitVec
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"""
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Rule:
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ISZERO(SUB(X, Y)) -> EQ(X, Y)
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"""
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rule = Rule()
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n_bits = 256
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# Input vars
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X = BitVec('X', n_bits)
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Y = BitVec('Y', n_bits)
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# Non optimized result
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nonopt = ISZERO(SUB(X, Y))
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# Optimized result
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opt = EQ(X, Y)
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rule.check(nonopt, opt)
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