mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
26 lines
372 B
Python
26 lines
372 B
Python
from opcodes import AND, SHL
|
|
from rule import Rule
|
|
from z3 import BitVec
|
|
|
|
"""
|
|
Rule:
|
|
AND(SHL(Z,X), SHL(Z,Y)) -> SHL(Z, AND(X,Y))
|
|
"""
|
|
|
|
rule = Rule()
|
|
|
|
n_bits = 128
|
|
|
|
# Input vars
|
|
X = BitVec('X', n_bits)
|
|
Y = BitVec('Y', n_bits)
|
|
Z = BitVec('Z', n_bits)
|
|
|
|
# Non optimized result
|
|
nonopt = AND(SHL(Z,X), SHL(Z,Y))
|
|
|
|
# Optimized result
|
|
opt = SHL(Z, AND(X,Y))
|
|
|
|
rule.check(nonopt, opt)
|