add runtime-feature detection for tsc

Author: gnzlbg

coresimd/src/runtime/x86.rs

@@ -32,6 +32,9 @@ macro_rules! __unstable_detect_feature {
     ("aes", $unstable_detect_feature:path) => {
         $unstable_detect_feature(
             $crate::__vendor_runtime::__Feature::aes{})  };
+    ("tsc", $unstable_detect_feature:path) => {
+        $unstable_detect_feature(
+            $crate::__vendor_runtime::__Feature::tsc{})  };
     ("mmx", $unstable_detect_feature:path) => {
         $unstable_detect_feature(
             $crate::__vendor_runtime::__Feature::mmx{})  };
@@ -173,6 +176,8 @@ macro_rules! __unstable_detect_feature {
 pub enum __Feature {
     /// AES (Advanced Encryption Standard New Instructions AES-NI)
     aes,
+    /// TSC (Time Stamp Counter)
+    tsc,
     /// MMX
     mmx,
     /// SSE (Streaming SIMD Extensions)
@@ -346,8 +351,9 @@ pub fn detect_features() -> usize {
         enable(proc_info_ecx, 20, __Feature::sse4_2);
         enable(proc_info_ecx, 23, __Feature::popcnt);
         enable(proc_info_ecx, 25, __Feature::aes);
-        enable(proc_info_edx, 24, __Feature::fxsr);
+        enable(proc_info_edx, 4, __Feature::tsc);
         enable(proc_info_edx, 23, __Feature::mmx);
+        enable(proc_info_edx, 24, __Feature::fxsr);
         enable(proc_info_edx, 25, __Feature::sse);
         enable(proc_info_edx, 26, __Feature::sse2);
 
@@ -457,6 +463,7 @@ mod tests {
     #[test]
     fn dump() {
         println!("aes: {:?}", cfg_feature_enabled!("aes"));
+        println!("tsc: {:?}", cfg_feature_enabled!("tsc"));
         println!("sse: {:?}", cfg_feature_enabled!("sse"));
         println!("sse2: {:?}", cfg_feature_enabled!("sse2"));
         println!("sse3: {:?}", cfg_feature_enabled!("sse3"));
@@ -497,6 +504,7 @@ mod tests {
     fn compare_with_cupid() {
         let information = cupid::master().unwrap();
         assert_eq!(cfg_feature_enabled!("aes"), information.aesni());
+        assert_eq!(cfg_feature_enabled!("tsc"), information.tsc());
         assert_eq!(cfg_feature_enabled!("sse"), information.sse());
         assert_eq!(cfg_feature_enabled!("sse2"), information.sse2());
         assert_eq!(cfg_feature_enabled!("sse3"), information.sse3());