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Diffstat (limited to '')
-rw-r--r-- | src/tools/rustfmt/tests/source/cfg_if/detect/arch/arm.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/source/cfg_if/detect/arch/arm.rs b/src/tools/rustfmt/tests/source/cfg_if/detect/arch/arm.rs new file mode 100644 index 000000000..b2626bf29 --- /dev/null +++ b/src/tools/rustfmt/tests/source/cfg_if/detect/arch/arm.rs @@ -0,0 +1,39 @@ +//! Run-time feature detection on ARM Aarch32. + +/// Checks if `arm` feature is enabled. +#[macro_export] +#[unstable(feature = "stdsimd", issue = "27731")] +#[allow_internal_unstable(stdsimd_internal,stdsimd)] +macro_rules! is_arm_feature_detected { + ("neon") => { + cfg!(target_feature = "neon") || + $crate::detect::check_for($crate::detect::Feature::neon) + }; + ("pmull") => { + cfg!(target_feature = "pmull") || + $crate::detect::check_for($crate::detect::Feature::pmull) + }; + ("v7") => { compile_error!("\"v7\" feature cannot be detected at run-time") }; + ("vfp2") => { compile_error!("\"vfp2\" feature cannot be detected at run-time") }; + ("vfp3") => { compile_error!("\"vfp3\" feature cannot be detected at run-time") }; + ("vfp4") => { compile_error!("\"vfp4\" feature cannot be detected at run-time") }; + ($t:tt,) => { + is_arm_feature_detected!($t); + }; + ($t:tt) => { compile_error!(concat!("unknown arm target feature: ", $t)) }; +} + +/// ARM CPU Feature enum. Each variant denotes a position in a bitset for a +/// particular feature. +/// +/// PLEASE: do not use this, it is an implementation detail subject to change. +#[doc(hidden)] +#[allow(non_camel_case_types)] +#[repr(u8)] +#[unstable(feature = "stdsimd_internal", issue = "0")] +pub enum Feature { + /// ARM Advanced SIMD (NEON) - Aarch32 + neon, + /// Polynomial Multiply + pmull, +} |