From db1c62aeb5a8af5cce86331baf32462b4f87b55f Mon Sep 17 00:00:00 2001
From: Michael Woerister <michaelwoerister@posteo>
Date: Fri, 31 Aug 2018 16:43:50 +0200
Subject: [PATCH] Perform cross-lang-lto for librustc_codegen_llvm.

---
 src/bootstrap/compile.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index da0ccf5e1773d..4cf89cc8981c2 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -687,6 +687,7 @@ impl Step for CodegenBackend {
 
         if builder.config.llvm_thin_lto {
             cargo_tails_args.push("--".to_string());
+            cargo_tails_args.push("-Zcross-lang-lto".to_string());
 
             let num_jobs = builder.jobs();