This will usher in the era of "hypermature optimization".
It's pretty crazy how many problems we have are people trying to solve already solved problems
I’ve need no evidence that AI writes particularly performant code (especially wrt to specific hardware.)
Nor have I seen any big player showing off models which were tuned for performant code generation.
Code performance work is almost always very specific to the codebase at hand and not at all general.
Imagine a simple todo application. Instead of a conditional filter on completed items the code itself changes to always and only return completed items upon request, spoken or otherwise.