From f9b673309f791f3e8fee6fc385e71ddcd51795e4 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sat, 11 Apr 2020 19:34:25 +0200
Subject: [PATCH] codegen tests: add link to LLVM FileCheck docs (#673)

---
 src/tests/intro.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/tests/intro.md b/src/tests/intro.md
index a81255de..fd0e50c8 100644
--- a/src/tests/intro.md
+++ b/src/tests/intro.md
@@ -36,6 +36,8 @@ details.
 - `debuginfo` – tests that run in gdb or lldb and query the debug info
 - `codegen` – tests that compile and then test the generated LLVM
   code to make sure that the optimizations we want are taking effect.
+  See [LLVM docs](https://llvm.org/docs/CommandGuide/FileCheck.html) for how to
+  write such tests.
 - `assembly` – similar to `codegen` tests, but verifies assembly output
   to make sure LLVM target backend can handle provided code.
 - `mir-opt` – tests that check parts of the generated MIR to make