I had an idea for a theoretical super computer. Supposing, one was able to optimise(or significantly increase efficiency) all algorithms used in most computing tasks(An open source project on algorithm optimisation maybe? The system design is being optimised from the barest tools, the "axioms" of the RAM model(algorithms for file access and basic arithmetic operations will be optimised) all the way to the most complicated algorithms. Supposing one were to then develop a language that implemented these algorithms most effectively and had the best performance with the algorithms(A language was designed for the express purpose of getting the best performance possible out of the algorithms with no constraints based on the target machine). Suppose this was also a high level language like C++.
I hypothesised that one would be able to vastly increase the speed of the system, by designing entirely new architecture to effectively run programs built in this language. A sort of Hardware level compiler(By hardware level compiler, I was referring to architecture design, that can execute the program's source code through native hardware configurations. The hardware is designed for the language and NOT the other way round(which is what I thinks happens in with modern architectures).
An OS built on this language will be much faster on that hardware, but will lose portability. But gain a lot of speed. (I feel the tradeoff is worth it).
I have $3$ questions.
$(1.)$ Is my proposal feasible.
$(2.)$ Is my hypotheses correct.
$(3.)$ What magnitude of speed increases is feasibly possible.