mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
40 lines
641 B
Python
40 lines
641 B
Python
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from rule import Rule
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from opcodes import *
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"""
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Rule:
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OR(OR(X, Y), Y) -> OR(X, Y)
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OR(Y, OR(X, Y)) -> OR(X, Y)
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OR(OR(Y, X), Y) -> OR(Y, X)
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OR(Y, OR(Y, X)) -> OR(Y, X)
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Requirements:
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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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# Constants
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BitWidth = BitVecVal(n_bits, n_bits)
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# Requirements
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# Non optimized result
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nonopt_1 = OR(OR(X, Y), Y)
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nonopt_2 = OR(Y, OR(X, Y))
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nonopt_3 = OR(OR(Y, X), Y)
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nonopt_4 = OR(Y, OR(Y, X))
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# Optimized result
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opt_1 = OR(X, Y)
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opt_2 = OR(Y, X)
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rule.check(nonopt_1, opt_1)
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rule.check(nonopt_2, opt_1)
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rule.check(nonopt_3, opt_2)
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rule.check(nonopt_4, opt_2)
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