From fb3ac44dd839010b0bb91fdb76d42c6b01b300de Mon Sep 17 00:00:00 2001
From: jyn <github@jyn.dev>
Date: Sun, 9 Jul 2023 18:59:48 -0500
Subject: [PATCH] Don't checkout the LLVM submodule in `x dist --dry-run`

We don't actually need it and it's quite slow.
---
 src/bootstrap/dist.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index 2141bb0ddd9b..8c71b7f7fc22 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -902,7 +902,9 @@ impl Step for Src {
 
     /// Creates the `rust-src` installer component
     fn run(self, builder: &Builder<'_>) -> GeneratedTarball {
-        builder.update_submodule(&Path::new("src/llvm-project"));
+        if !builder.config.dry_run() {
+            builder.update_submodule(&Path::new("src/llvm-project"));
+        }
 
         let tarball = Tarball::new_targetless(builder, "rust-src");