Matthias Krüger 1762f018f7 Rollup merge of #137860 - taiki-e:powerpcspe-msync, r=workingjubilee ... rustc_target: Add msync target feature and enable it on powerpcspe targets Some older PowerPC processors do not have the `sync` (`sync 0`) and `lwsync` (`sync 1`) instructions, but instead have the `msync` instruction. (IIRC `msync` and `sync` will be assembled into the same bit-pattern, but `lwsync` will be SIGILL. See also https://gcc.gnu.org/legacy-ml/gcc-patches/2006-11/msg01238.html.) LLVM recognizes this as the [`msync` feature](cc5d8a4b2f/llvm/lib/Target/PowerPC/PPC.td (L140)) and enables for some cpus such as [e500](cc5d8a4b2f/llvm/lib/Target/PowerPC/PPC.td (L644)). powerpcspe is a target for CPUs such as e500 ([Debian Wiki](https://wiki.debian.org/PowerPCSPEPort)). However, the `msync` feature is currently not enabled except for vxworks, and at least since 2022-04, powerpc-unknown-linux-gnuspe was known to not work on real hardware without `-C target-cpu` (e.g., #96394, #117361). 8c392966a0/compiler/rustc_target/src/spec/targets/powerpc_wrs_vxworks_spe.rs (L28) Fixes #117361 cc `@BKPepe` ([powerpc-unknown-linux-muslspe target maintainer](https://doc.rust-lang.org/nightly/rustc/platform-support/powerpc-unknown-linux-muslspe.html#target-maintainers)) cc `@glaubitz` (who added powerpc-unknown-linux-gnuspe in https://github.com/rust-lang/rust/pull/48484) cc `@th0ma7` (who opened #117361) r? workingjubilee `@rustbot` label +O-PowerPC +A-target-feature		2025-03-02 22:44:25 +01:00
..
asm	Rollup merge of #136239 - folkertdev:show-supported-register-classes, r=SparrowLii,jieyouxu	2025-02-11 18:04:34 +01:00
callconv	rename BackendRepr::Vector → SimdVector	2025-02-28 17:17:45 +01:00
spec	rustc_target: Add msync target feature and enable it on powerpcspe targets	2025-03-02 03:03:52 +09:00
json.rs	compiler: internally merge Conv::PtxKernel into GpuKernel	2025-02-09 23:14:55 -08:00
lib.rs	compiler: remove rustc_target reexport of rustc_abi::HashStableContext	2025-02-11 18:55:48 -08:00
target_features.rs	rustc_target: Add msync target feature and enable it on powerpcspe targets	2025-03-02 03:03:52 +09:00
tests.rs	Use serde_json for target spec json	2022-06-03 16:46:19 +00:00