[llvm] [docs] Rename LangRef.{rst|md} (PR #201974)

[Reid Kleckner via llvm-commits]

https://github.com/rnk updated https://github.com/llvm/llvm-project/pull/201974

>From e0ca16dee42d25ac92a6663f0d6cf220a69a4295 Mon Sep 17 00:00:00 2001
From: Reid Kleckner <rkleckner at nvidia.com>
Date: Fri, 5 Jun 2026 22:52:34 +0000
Subject: [PATCH] [docs] Rename LangRef.{rst|md}

Tracking issue: #201242

This commit does not use valid markdown, so the docs will not build, but they will be fixed in an immediate follow-up commit that does the migration.
---
 .github/new-prs-labeler.yml               | 2 +-
 llvm/docs/AddingConstrainedIntrinsics.rst | 2 +-
 llvm/docs/{LangRef.rst => LangRef.md}     | 0
 3 files changed, 2 insertions(+), 2 deletions(-)
 rename llvm/docs/{LangRef.rst => LangRef.md} (100%)

diff --git a/.github/new-prs-labeler.yml b/.github/new-prs-labeler.yml
index d8cba3bfa7272..908f6b68f97fd 100644
--- a/.github/new-prs-labeler.yml
+++ b/.github/new-prs-labeler.yml
@@ -832,7 +832,7 @@ llvm:ir:
     - any-glob-to-any-file:
       - llvm/lib/IR/**
       - llvm/include/llvm/IR/**
-      - llvm/docs/LangRef.rst
+      - llvm/docs/LangRef.md
       - llvm/unittests/IR/**
 
 llvm:SandboxIR:
diff --git a/llvm/docs/AddingConstrainedIntrinsics.rst b/llvm/docs/AddingConstrainedIntrinsics.rst
index 41e7dece6dd8b..4d1739ff11748 100644
--- a/llvm/docs/AddingConstrainedIntrinsics.rst
+++ b/llvm/docs/AddingConstrainedIntrinsics.rst
@@ -98,4 +98,4 @@ Add documentation and tests
 
 ::
 
-  docs/LangRef.rst
+  docs/LangRef.md
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.md
similarity index 100%
rename from llvm/docs/LangRef.rst
rename to llvm/docs/LangRef.md