ESP32 Forum

I have just noticed that Espressif provides support for clang since some time.
What are your experiences with this? Does one lead to better code over another?

Tried it a few times, never got clang to work on Windows, gave up.
My general impression is that clang may optimize some constructs a little better than gcc, saving one instruction here or there, but I think you'd be hard-pressed to find a case where it makes a measurable difference.
(If 1 or 2 instructions more or less in a section of code do make a significant difference in a certain case, I'd argue that that code shouldn't be left to chance by hoping for the compiler to choose the 'right' optimization every time.)

FWIW, I think clang (or llvm) support in general is mostly done to get Rust to work. As far as I understand, gcc does not support Rust (yet).

I see, thanks. I'll stick with gcc then.