From 7533c8f70cda4c49a60db4a05318772c32dba1fb Mon Sep 17 00:00:00 2001
From: MANISH WALIA <78153901+manishwalia15@users.noreply.github.com>
Date: Sun, 13 Oct 2024 01:07:02 +0530
Subject: [PATCH] Update CONTRIBUTING.md

---
 CONTRIBUTING.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index eeff563d8ecdf..0e5636a22d495 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -40,3 +40,13 @@ refer to [this section][contributing-bug-reports] and [open an issue][issue temp
 [internals]: https://internals.rust-lang.org
 [rust-discord]: http://discord.gg/rust-lang
 [rust-zulip]: https://rust-lang.zulipchat.com
+
+## External LLVM Version Compatibility
+
+To build `rustc`, it is important to know which versions of LLVM are supported. As of Rust 1.82, the following external LLVM versions are supported:
+
+- **Minimum Supported Version**: LLVM 17
+- **Maximum Supported Version**: LLVM 19
+
+If you attempt to use LLVM versions outside this range, you may encounter compatibility issues when compiling `rustc`. Please ensure you are using a compatible version for your build.
+