Auto merge of #138630 - matthiaskrgr:rollup-kk1gogr, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #138384 (Move `hir::Item::ident` into `hir::ItemKind`.)
 - #138508 (Clarify "owned data" in E0515.md)
 - #138531 (Store test diffs in job summaries and improve analysis formatting)
 - #138533 (Only use `DIST_TRY_BUILD` for try jobs that were not selected explicitly)
 - #138556 (Fix ICE: attempted to remap an already remapped filename)
 - #138608 (rustc_target: Add target feature constraints for LoongArch)
 - #138619 (Flatten `if`s in `rustc_codegen_ssa`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

src/tests/ci.md

@@ -180,6 +180,8 @@ their results can be seen [here](https://github.com/rust-lang-ci/rust/actions),
 although usually you will be notified of the result by a comment made by bors on
 the corresponding PR.
 
+Note that if you start the default try job using `@bors try`, it will skip building several `dist` components and running post-optimization tests, to make the build duration shorter. If you want to execute the full build as it would happen before a merge, add an explicit `try-job` pattern with the name of the default try job (currently `dist-x86_64-linux`).
+
 Multiple try builds can execute concurrently across different PRs.
 
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