On Thu, 19 Jan 2023 19:23:30 GMT, Erik Joelsson <er...@openjdk.org> wrote:
> Changing the global optimization flags is a pretty big and potentially > intrusive change. It's quite possible that the current flags need a > re-evaluation, since they were chosen a long time ago, for a much older > version of Visual Studio. But, doing that evaluation is going to take some > work. What is the impact on footprint and performance? How thoroughly have > you tested that the increased optimization level isn't triggering something > in Hotspot? We have quite a bit of history of compiler optimizations not > working well with certain things that are done in the JVM. Yes, I need to get my personal box back together so I can see the results on Windows. The main drawback of the changes is going to be binary size, the question is out much. I'll move this back to draft until I can see for myself. Based on compiler explorer -O2 is much more optimal than -O1 for certain things. ------------- PR: https://git.openjdk.org/jdk/pull/12073
