[llvm] [docs][GitHub] Document alternative approach to stacked PRs (PR #132424)

[Andrzej Warzyński via llvm-commits]

https://github.com/banach-space created https://github.com/llvm/llvm-project/pull/132424

None

>From 7de08172b6580c0c7b04001d72b054d3667aa03f Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Fri, 21 Mar 2025 16:58:14 +0000
Subject: [PATCH] [docs][GitHub] Document alternative approach to stacked PRs

---
 llvm/docs/GitHub.rst | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/llvm/docs/GitHub.rst b/llvm/docs/GitHub.rst
index 03cf2251f955e..bb9587423bb6a 100644
--- a/llvm/docs/GitHub.rst
+++ b/llvm/docs/GitHub.rst
@@ -29,8 +29,24 @@ intended to be able to support "stacked" pull-request. Do not create any branche
 llvm/llvm-project repository otherwise, please use a fork (see below). User branches that
 aren't associated with a pull-request **will be deleted**.
 
+Stacked Pull Requests
+=====================
+
+GitHub does not natively support stacked pull requests. There are two common
+alternatives:
+
+* Add a note in your PR summary indicating that your patch is part of a series or
+depends on another PR (e.g., “Depends on #123456”). It also helps to highlight
+which commits belong to other PRs, so reviewers can focus only on the relevant
+changes.
+
+* Use Graphite (described below), a tool that supports stacked PR workflows.
+
+Both approaches help streamline the review process. Choose the one that works
+best for you.
+
 Using Graphite for stacked Pull Requests
-========================================
+----------------------------------------
 
 `Graphite <https://app.graphite.dev/>`_ is a stacked pull request tool supported
 by the LLVM repo (the other being `reviewable.io <https://reviewable.io>`_).