From 12ac719b99560072cbe52a957f22d3fe6946cf2a Mon Sep 17 00:00:00 2001
From: Alessandro Decina <alessandro.d@gmail.com>
Date: Sun, 18 Apr 2021 17:45:08 +1000
Subject: [PATCH] Pass target features to bpf-linker

---
 compiler/rustc_codegen_ssa/src/back/linker.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/rustc_codegen_ssa/src/back/linker.rs b/compiler/rustc_codegen_ssa/src/back/linker.rs
index 672b910e974..9df8a99cdd6 100644
--- a/compiler/rustc_codegen_ssa/src/back/linker.rs
+++ b/compiler/rustc_codegen_ssa/src/back/linker.rs
@@ -1489,6 +1489,10 @@ impl<'a> Linker for BpfLinker<'a> {
             Some(ref s) => s,
             None => &self.sess.target.options.cpu,
         });
+        self.cmd.arg("--cpu-features").arg(match &self.sess.opts.cg.target_feature {
+            feat if !feat.is_empty() => feat,
+            _ => &self.sess.target.options.features,
+        });
     }
 
     fn link_dylib(&mut self, _lib: Symbol, _verbatim: bool, _as_needed: bool) {