diff options
Diffstat (limited to 'library/stdarch/crates/std_detect')
3 files changed, 6 insertions, 1 deletions
diff --git a/library/stdarch/crates/std_detect/src/detect/arch/arm.rs b/library/stdarch/crates/std_detect/src/detect/arch/arm.rs index 02bf654945d..96978b70098 100644 --- a/library/stdarch/crates/std_detect/src/detect/arch/arm.rs +++ b/library/stdarch/crates/std_detect/src/detect/arch/arm.rs @@ -14,4 +14,6 @@ features! { /// ARM Advanced SIMD (NEON) - Aarch32 @FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] pmull: "pmull"; /// Polynomial Multiply + @FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] crc: "crc"; + /// CRC32 (Cyclic Redundancy Check) } diff --git a/library/stdarch/crates/std_detect/src/detect/os/linux/arm.rs b/library/stdarch/crates/std_detect/src/detect/os/linux/arm.rs index a1b28dad70f..f55bc30b849 100644 --- a/library/stdarch/crates/std_detect/src/detect/os/linux/arm.rs +++ b/library/stdarch/crates/std_detect/src/detect/os/linux/arm.rs @@ -15,10 +15,11 @@ pub(crate) fn detect_features() -> cache::Initializer { // The values are part of the platform-specific [asm/hwcap.h][hwcap] // - // [hwcap]: https://github.com/torvalds/linux/blob/master/arch/arm64/include/uapi/asm/hwcap.h + // [hwcap]: https://github.com/torvalds/linux/blob/master/arch/arm/include/uapi/asm/hwcap.h if let Ok(auxv) = auxvec::auxv() { enable_feature(&mut value, Feature::neon, bit::test(auxv.hwcap, 12)); enable_feature(&mut value, Feature::pmull, bit::test(auxv.hwcap2, 1)); + enable_feature(&mut value, Feature::crc, bit::test(auxv.hwcap2, 4)); return value; } @@ -29,6 +30,7 @@ pub(crate) fn detect_features() -> cache::Initializer { c.field("Features").has("neon") && !has_broken_neon(&c), ); enable_feature(&mut value, Feature::pmull, c.field("Features").has("pmull")); + enable_feature(&mut value, Feature::crc, c.field("Features").has("crc32")); return value; } value diff --git a/library/stdarch/crates/std_detect/tests/cpu-detection.rs b/library/stdarch/crates/std_detect/tests/cpu-detection.rs index d441f4e1eff..7beb8a491a4 100644 --- a/library/stdarch/crates/std_detect/tests/cpu-detection.rs +++ b/library/stdarch/crates/std_detect/tests/cpu-detection.rs @@ -24,6 +24,7 @@ fn all() { fn arm_linux() { println!("neon: {}", is_arm_feature_detected!("neon")); println!("pmull: {}", is_arm_feature_detected!("pmull")); + println!("crc: {}", is_arm_feature_detected!("crc")); } #[test] |