On Monday, 11 July 2022 at 18:19:41 UTC, max haughton wrote:
The dmd backend is ancient, it isn't really capable of these kinds of loop optimizations.
I've said it several times before. Just depreciate the the DMD backend, it's just not up to the task anymore. This is not criticism against the original purpose of it as back in the 90s and early 2000s it made sense to create your own backend. Time has moved on and we have LLVM and GCC backends with a lot of CPU support that the D project could never achieve themselves. The D project should just can the DMD backend in order to free up resources for more important tasks.
Some people say they like it because it is fast, yes it is fast because it doesn't do much.
