def propagand_ops(codes):
for i, c in enumerate(codes):
if c.code_t == tac.BINARY and not c.immp('y') and c.immp('z'):
if c.z == 0 and c.op in ['+', '-']: # + 0 / - 0: throw
codes[i] = tac.assign(c.x, c.y)
elif c.z == 1 and c.op in ['*', '/']:
codes[i] = tac.assign(c.x, c.y)
elif c.z == 0 and c.op == '*':
codes[i] = tac.assign(c.x, 0)
elif c.z == 0 and c.op == '/':
raise CompileTimeError, 'divide by zero'
return make_optim(False)
def case0_run(codes, argl, argd):
for i in argd['opt_idx']:
codes[i] = tac.assign(codes[i].x, codes[i].fold())