rust/compiler/rustc_feature/src
Matthias Krüger b9d4ef16c9
Rollup merge of #132552 - taiki-e:sparc-target-feature, r=workingjubilee
Add v9, v8plus, and leoncasa target feature to sparc and use v8plus in create_object_file

This adds the following three unstable target features:

- `v9`: SPARC-V9 instructions ([LLVM definition][sparc-v9])
  - Relevant to https://github.com/rust-lang/rust/pull/131222#issuecomment-2453310963
  - Relevant to https://github.com/rust-lang/rust/pull/132472#discussion_r1832606081
  - This is also needed to implement https://github.com/taiki-e/atomic-maybe-uninit/pull/31 (depends on inline assembly support) more robustly.
- `v8plus`: SPARC-V8+ ABI ([LLVM definition][sparc-v8plus])
  - This is added in LLVM 20. In LLVM 19 and older, it is emulated to work the same way as LLVM in each LLVM version.
  - See https://github.com/rust-lang/rust/issues/132585#issuecomment-2453926257 for more.
- `leoncasa`: CASA instruction[^1] of LEON3 and LEON4 processors ([LLVM definition][sparc-leoncasa], LLVM feature name: `hasleoncasa`)
  - This is needed to implement https://github.com/taiki-e/atomic-maybe-uninit/pull/31 (depends on inline assembly support) more robustly.

[^1]: Atomic CAS instruction

[sparc-v9]: f5e4ffaa49/llvm/lib/Target/Sparc/Sparc.td (L37-L39)
[sparc-v8plus]: f5e4ffaa49/llvm/lib/Target/Sparc/Sparc.td (L37-L39)
[sparc-leoncasa]: https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/Sparc/LeonFeatures.td#L32-L37
2024-11-09 10:52:03 +01:00
..
accepted.rs Rollup merge of #131984 - dingxiangfei2009:stabilize-if-let-rescope, r=traviscross,lcnr 2024-10-29 18:38:57 +01:00
builtin_attrs.rs remove support for rustc_safe_intrinsic attribute; use rustc_intrinsic functions instead 2024-11-08 09:16:00 +01:00
lib.rs Introduce Enabled{Lang,Lib}Feature 2024-10-25 10:30:37 +08:00
removed.rs Yeet effects feature 2024-11-03 18:59:31 +00:00
tests.rs tidy: Re-enable check for inline unit tests 2020-12-12 19:18:44 +03:00
unstable.rs Add v9 and leoncasa target feature to sparc 2024-11-09 03:17:24 +09:00