Rollup of 5 pull requests
Successful merges:
- #132552 (Add v9, v8plus, and leoncasa target feature to sparc and use v8plus in create_object_file)
- #132745 (pointee_info_at: fix logic for recursing into enums)
- #132777 (try_question_mark_nop: update test for LLVM 20)
- #132785 (rustc_target: more target string fixes for LLVM 20)
- #132794 (Use a separate dir for r-a builds consistently in helix config)
r? `@ghost`
`@rustbot` modify labels: rollup
80445576d0