Merge pull request #119 from outbrain/log-detected-x86-features

Log detected x86 features

src/logging_layer.rs

@@ -17,4 +17,31 @@ pub fn initialize_logging_layer() {
     if builder.try_init().is_ok() {
         log::info!("Initialized the logger ..")
     }
+
+    log_detected_x86_features();
 }
+
+fn log_detected_x86_features() {
+    let mut features: Vec<String> = Vec::new();
+    if is_x86_feature_detected!("avx") {
+        features.push("AVX".to_string());
+    }
+
+    if is_x86_feature_detected!("avx2") {
+        features.push("AVX2".to_string());
+    }
+
+    if is_x86_feature_detected!("avx512f") {
+        features.push("AVX512F".to_string());
+    }
+
+    if is_x86_feature_detected!("fma") {
+        features.push("FMA".to_string());
+    }
+
+    if features.is_empty() {
+        log::info!("No selected CPU features detected ..");
+    } else {
+        log::info!("Detected CPU features: {:?}", features.join(", "));
+    }
+}