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)