alt Hacker News> isn't this handled at the compiler level? I.e. lower level than game devs worry about.
But game devs (at least of a certain type) are notorious for thinking about low-level hardware performance right from the start. As a class I'm pretty sure game devs use godbolt much, much more than your typical developer.
Sadly, nowadays very few, if any, game developers care about performance or optimizations. Look at recent headline about "Helldivers 2 devs slash install size from 154GB to 23GB" and it was done by simply deduplicating assets. Gone are the days of finding inredible ways to use less opcodes that game would feel smoother.