Add docs for codegen_llvm to d.r-l.o/nightly/nightly-rustc

[bjorn3]

[scottmcm]

👍 -- I just wanted to link to Builder::nuwadd and friends, and couldn't.

[QuietMisdreavus]

@Mark-Simulacrum @kennytm I'm not sure what needs to happen to get this included in the compiler docs that get posted there, but it seems like this is a bit of an oversight there?

[kennytm]

You just need to change this line I think. Codegen is a dynamic library outside of the rustc driver executable, and thus not included when checking the dependency of the rustc-driver crate alone.

rust/src/bootstrap/doc.rs

Line 715 in 63d6649

for root_crate in &["rustc", "rustc_driver"] {

cc @davidtwco #49193.

[Mark-Simulacrum]

Yes, that looks accurate. Should be a relatively simple fix...