Some platforms do not allow runtime code generation, for security reasons. The prime example of this is the iOS platform for Apple mobile devices. Only the first two stages would help performance on those platforms.
I dont really know anything about Apple systems, but from the title I thought you might be interested about this: https://www.google.com/amp/s/9to5mac.com/2020/11/06/ios-14-2-brings-jit-compilation-support-which-enables-emulation-apps-at-full-performance/amp/
I dont really know anything about Apple systems, but from the title I thought you might be interested about this: https://www.google.com/amp/s/9to5mac.com/2020/11/06/ios-14-2-brings-jit-compilation-support-which-enables-emulation-apps-at-full-performance/amp/