mirror of
https://github.com/rust-lang/rust.git
synced 2026-04-27 18:57:42 +03:00
Jonathan Brouwer
b7286260c8
add the `fma4` x86 target feature tracking issue: https://github.com/rust-lang/rust/issues/155233 Implications are based on LLVM https://github.com/llvm/llvm-project/blob/df6c82053c5e1f9814d130d423f34871bc6423c5/llvm/lib/Target/X86/X86.td#L201-L206 This feature adds a slightly better instruction encoding for fma. We might want to expose the intrinsics in `stdarch` with that target feature, but just adding the target feature in user code should already take advantage of this improved encoding. This target feature is used in `libm`. r? sayantn