Block* makeExit(IRGS& env, Offset targetBcOff /* = -1 */) { return implMakeExit(env, TransFlags{}, targetBcOff); }
Block* makeExit(IRGS& env, TransFlags flags) { return implMakeExit(env, flags, -1); }
Block* makeGuardExit(IRGS& env, TransFlags flags) { return implMakeExit(env, flags, -1, true); }