Save function results in memory

[clearloop]

We are currently using stack to save the results of functions provides micro optimization in performance and macro side effects in our functions, using stack is not the standard solution and really buggy as what we can see so far

the usage of stack should be limited in the operations inside of functions, whatever stack based machine like EVM/WASM or register based VM, we need to fix the problem in our implementation ))

[clearloop]

feel free to join the discussion here or share the problems you met in your PRs @g4titanx @AurelienFT