1 files changed, 106 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/source/cfg_if/detect/arch/aarch64.rs b/src/tools/rustfmt/tests/source/cfg_if/detect/arch/aarch64.rs
new file mode 100644
index 000000000..ebae2bd28
--- /dev/null
+++ b/src/tools/rustfmt/tests/source/cfg_if/detect/arch/aarch64.rs
@@ -0,0 +1,106 @@
+//! Aarch64 run-time features.
+
+/// Checks if `aarch64` feature is enabled.
+#[macro_export]
+#[unstable(feature = "stdsimd", issue = "27731")]
+#[allow_internal_unstable(stdsimd_internal,stdsimd)]
+macro_rules! is_aarch64_feature_detected {
+    ("neon") => {
+        // FIXME: this should be removed once we rename Aarch64 neon to asimd
+        cfg!(target_feature = "neon") ||
+            $crate::detect::check_for($crate::detect::Feature::asimd)
+    };
+    ("asimd") => {
+        cfg!(target_feature = "neon") ||
+            $crate::detect::check_for($crate::detect::Feature::asimd)
+    };
+    ("pmull") => {
+        cfg!(target_feature = "pmull") ||
+            $crate::detect::check_for($crate::detect::Feature::pmull)
+    };
+    ("fp") => {
+        cfg!(target_feature = "fp") ||
+            $crate::detect::check_for($crate::detect::Feature::fp)
+    };
+    ("fp16") => {
+        cfg!(target_feature = "fp16") ||
+            $crate::detect::check_for($crate::detect::Feature::fp16)
+    };
+    ("sve") => {
+        cfg!(target_feature = "sve") ||
+            $crate::detect::check_for($crate::detect::Feature::sve)
+    };
+    ("crc") => {
+        cfg!(target_feature = "crc") ||
+            $crate::detect::check_for($crate::detect::Feature::crc)
+    };
+    ("crypto") => {
+        cfg!(target_feature = "crypto") ||
+            $crate::detect::check_for($crate::detect::Feature::crypto)
+    };
+    ("lse") => {
+        cfg!(target_feature = "lse") ||
+            $crate::detect::check_for($crate::detect::Feature::lse)
+    };
+    ("rdm") => {
+        cfg!(target_feature = "rdm") ||
+            $crate::detect::check_for($crate::detect::Feature::rdm)
+    };
+    ("rcpc") => {
+        cfg!(target_feature = "rcpc") ||
+            $crate::detect::check_for($crate::detect::Feature::rcpc)
+    };
+    ("dotprod") => {
+        cfg!(target_feature = "dotprod") ||
+            $crate::detect::check_for($crate::detect::Feature::dotprod)
+    };
+    ("ras") => {
+        compile_error!("\"ras\" feature cannot be detected at run-time")
+    };
+    ("v8.1a") => {
+        compile_error!("\"v8.1a\" feature cannot be detected at run-time")
+    };
+    ("v8.2a") => {
+        compile_error!("\"v8.2a\" feature cannot be detected at run-time")
+    };
+    ("v8.3a") => {
+        compile_error!("\"v8.3a\" feature cannot be detected at run-time")
+    };
+    ($t:tt,) => {
+        is_aarch64_feature_detected!($t);
+    };
+    ($t:tt) => { compile_error!(concat!("unknown aarch64 target feature: ", $t)) };
+}
+
+/// ARM Aarch64 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 (ASIMD)
+    asimd,
+    /// Polynomial Multiply
+    pmull,
+    /// Floating point support
+    fp,
+    /// Half-float support.
+    fp16,
+    /// Scalable Vector Extension (SVE)
+    sve,
+    /// CRC32 (Cyclic Redundancy Check)
+    crc,
+    /// Crypto: AES + PMULL + SHA1 + SHA2
+    crypto,
+    /// Atomics (Large System Extension)
+    lse,
+    /// Rounding Double Multiply (ASIMDRDM)
+    rdm,
+    /// Release consistent Processor consistent (RcPc)
+    rcpc,
+    /// Vector Dot-Product (ASIMDDP)
+    dotprod,
+}