3011154573
This reverts commit b376f5621b801460b911a75048a70698021bbc69, which is the main part of #90499, because it turns out that this causes a good amount of breakage in crates relying on the old behavior. Fixes #91372.
rustc_target contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.