Optimization

Make a program boring.

Someone else will, later, optimize it under-the-hood.

Portability

Forget about addressing portability directly.

Portabilty is a subset of optimization.

Normalize the program. Optimization techniques can be used to port the program to other architectures.

RTL ports programs to disparate CPU architectures using normalization (“everything is a register”).

OCG ports programs to disparate CPU architectures using normalization (“everything is a lower-level operation using Data Descriptors”).

OCG provides a declarative syntax for describing portability decision trees.

Portability is a subset of Projectional Editing. Projectional Editing is a subset of Normalization.