Switching Out LLVM Backends

[choudanu4]

Recently support landed in rustc for dynamically loading LLVM. It would be nice if the rustc-guide documented how to switch to a custom LLVM backend. I'm not sure if this was planned to be included in the trans chapter(#6), as it does not yet have a tracking issue I could comment on.

Sorry if this is out of scope for the rustc-guide!

An example where people ask for this documentation.

Cheers

[mark-i-m]

@choudanu4 I think if the focus is more on "how did we make it switchable?", then yes, it seems like a good addition. In general, this guide is aimed more at people build, rather than using, the compiler.

Would you be interested in starting a trans chapter?