I'm wondering if there's a place that lists things which are
slower/faster to compile? DMD is pretty famed for compiling
quickly, but I'm not seeing particularly high speed at all, and I
want to fix that.
Currently at ~1ksloc/s of d input without optimizing anything,
which corresponds to 350ksloc/s if measuring by `-vcg-ast` output
instead of d source input, while using the same time measurement
from before, so the flag doesn't cost time.
Here's my learnings so far:
- CTFE is obviously unboundedly slow, since it runs arbitrary code
- Template expansion is presumably O(n) in the size of the
generated code, and the `-vcg-ast` flag helps a bit to see how
much it's expanding. I'm not convinced it's the reason my code
compiles slowly, though.
- no idea how expensive static if's on traits are
- std.regex compiles really slowly
- CTFE always runs on all top-level value definitions (even if
they contain things which cannot be executed at compile-time, and
I hate this so so much)
What other things are there?
- identifier lengths?
- comments?
- aliases?
- delegates?
- Variants?
