From 60877f9ba48c2c20cb90b522a5bb690d7989d85a Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Tue, 11 Feb 2020 11:31:08 -0700
Subject: [PATCH] Revert "Check for AVX512 at runtime to avoid invalid opcode
 trap (#8166)"

This reverts commit ef5fb6fa46e71eb0e152c493d60858a4d73ef07b.
---
 core/build.rs         |  8 --------
 core/src/validator.rs | 10 ----------
 2 files changed, 18 deletions(-)
 delete mode 100644 core/build.rs

diff --git a/core/build.rs b/core/build.rs
deleted file mode 100644
index a2fbf3bef..000000000
--- a/core/build.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-fn main() {
-    // Until https://github.com/rust-lang/rust/issues/44839 is resolved
-    // `#[target_feature(enable = "avx512f")]` is not available.
-    // Use an env flag instead:
-    if is_x86_feature_detected!("avx512f") {
-        println!("cargo:rustc-env=TARGET_FEATURE_AVX512F=1");
-    }
-}
diff --git a/core/src/validator.rs b/core/src/validator.rs
index 302603cfd..48b129211 100644
--- a/core/src/validator.rs
+++ b/core/src/validator.rs
@@ -659,16 +659,6 @@ fn report_target_features() {
             process::exit(1);
         }
     }
-
-    // TARGET_FEATURE_AVX512F is defined by build.rs
-    if option_env!("TARGET_FEATURE_AVX512F").is_some() {
-        if is_x86_feature_detected!("avx512f") {
-            info!("AVX512 detected");
-        } else {
-            error!("Your machine does not have AVX512 support, please rebuild from source on your machine");
-            process::exit(1);
-        }
-    }
 }
 
 // Get the activated stake percentage (based on the provided bank) that is visible in gossip