From 5b2edfa0bd8489beb8f874e1d70085b0d20a312e Mon Sep 17 00:00:00 2001
From: scafe3 <161312198+scafe3@users.noreply.github.com>
Date: Fri, 5 Jul 2024 07:49:07 +0100
Subject: [PATCH] Show `blst` hardware support in `lighthouse --version`
 (#6039)

* Show blst hardware support in lighthouse --version

* fix: detect adx extension in runtime

* fix

* add arm detect
---
 lighthouse/src/main.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/lighthouse/src/main.rs b/lighthouse/src/main.rs
index 47b44d3828f..a7521d5f8cd 100644
--- a/lighthouse/src/main.rs
+++ b/lighthouse/src/main.rs
@@ -26,12 +26,14 @@ lazy_static! {
     pub static ref LONG_VERSION: String = format!(
         "{}\n\
          BLS library: {}\n\
+         BLS hardware acceleration: {}\n\
          SHA256 hardware acceleration: {}\n\
          Allocator: {}\n\
          Profile: {}\n\
          Specs: mainnet (true), minimal ({}), gnosis ({})",
         SHORT_VERSION.as_str(),
         bls_library_name(),
+        bls_hardware_acceleration(),
         have_sha_extensions(),
         allocator_name(),
         build_profile_name(),
@@ -50,6 +52,15 @@ fn bls_library_name() -> &'static str {
     }
 }
 
+#[inline(always)]
+fn bls_hardware_acceleration() -> bool {
+    #[cfg(target_arch = "x86_64")]
+    return std::is_x86_feature_detected!("adx");
+
+    #[cfg(target_arch = "aarch64")]
+    return std::arch::is_aarch64_feature_detected!("neon");
+}
+
 fn allocator_name() -> &'static str {
     if cfg!(target_os = "windows") {
         "system"