if we know the test is a const bool, then create a branch llvm can get rid of
if we know the test is a const bool, then create a branch llvm can get rid of

toshok/echojs,carlosalberto/echo-js,carlosalberto/echo-js,toshok/echojs,toshok/echojs,carlosalberto/echo-js,toshok/echojs,toshok/echojs,toshok/echojs,carlosalberto/echo-js,carlosalberto/echo-js,toshok/echojs,toshok/echojs,carlosalberto/echo-js