From 2799fe4cdbe77e017544f2fe61ae9baef650dbe6 Mon Sep 17 00:00:00 2001
From: pennae <github@quasiparticle.net>
Date: Tue, 21 Dec 2021 19:34:40 +0100
Subject: enable LTO in optimized builds
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

gives 2-5% performance improvement across a board of tests.
LTO is broken when using clang; some libs link fine while others crash
the linker with a segfault in the llvm linker plugin. 🙁
---
 doc/manual/src/release-notes/rl-next.md | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'doc/manual')

diff --git a/doc/manual/src/release-notes/rl-next.md b/doc/manual/src/release-notes/rl-next.md
index 7dd8387d8..d81e54e49 100644
--- a/doc/manual/src/release-notes/rl-next.md
+++ b/doc/manual/src/release-notes/rl-next.md
@@ -26,3 +26,6 @@
 
 * Templates can now define a `welcomeText` attribute, which is printed out by
   `nix flake {init,new} --template <template>`.
+
+* Nix can now be built with LTO by passing `--enable-lto` to `configure`.
+  LTO is currently only supported when building with GCC.
-- 
cgit v1.2.3