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rust/compiler/rustc_target
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Matthias Krüger fd9d961ed8
Rollup merge of #130873 - taiki-e:ppc64-atomic, r=Amanieu 
rustc_target: Add powerpc64 atomic-related features

This adds the following two target features to unstable powerpc_target_feature.

- `partword-atomics`: 8-bit and 16-bit atomic instructions (`l{b,h}arx` and `st{b,h}cx.`) ([definition in LLVM](https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/PowerPC/PPC.td#L170-L172))
- `quadword-atomics`: 128-bit atomic instructions (`lqarx` and `stqcx.`) ([definition in LLVM](https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/PowerPC/PPC.td#L173-L175))

Both features are [available on power8+](https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/PowerPC/PPC.td#L408-L422), so enabled by default for `powerpc64le-*` targets.

r? `@Amanieu`

`@rustbot` label +O-PowerPC
2024-09-27 19:08:00 +02:00
..
src Rollup merge of #130873 - taiki-e:ppc64-atomic, r=Amanieu 2024-09-27 19:08:00 +02:00
Cargo.toml dedup object 2024-07-28 17:21:07 +03:00
README.md Fix outdated crate names in compiler docs 2021-04-08 11:12:14 -05:00

README.md

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.