Compilation and Optimizer Performance Improvements

[ekpyron]

We target several improvements on compilation time in general and performance of the via-IR pipeline in particular.

1. Help frameworks reduce compilation overhead through proper use of fine-grained output selection

   • Document output selection #15744
   • Requesting implicitly generated outputs #15742
   • Fix bugs: #13985, #12931, #15747, #14363
   • Consistent interface for older versions: solc-js#690, solc-js#755

2. Increase speed of via-IR compilation via internal refactoring:

   • https://github.com/ethereum/solidity/pull/15215 / https://github.com/ethereum/solidity/pull/15281 and related PRs
   • Improved data structures in the Yul optimizer based on the above refactoring

3. Increase the speed of the YUL->EVM code transform via transitioning to SSA-CFG based codegen.