Rollup merge of #93969 - bjorn3:codegen_backend_dep_info, r=pnkfelix

Only add codegen backend to dep info if -Zbinary-dep-depinfo is used

I am currently migrating the cg_clif build system from using a binary linked to the codegen backend as rustc replacement to passing `-Zcodegen-backend` instead. Without this PR this would force cargo to rebuild the sysroot on any change to the codegen backend even if I explicitly specify that I want it to be preserved, which would make development of cg_clif a lot slower. If you still want to have changes to the codegen backend invalidate the cargo build cache you can explicitly specify `-Zbinary-dep-depinfo`.

cc ``@eddyb`` as the codegen backend was initially added to the depinfo for rust-gpu.

0 files changed, 0 insertions, 0 deletions