[llvm] [gn] port 3fe75b62c3a977 (PR #215943)

[Nico Weber via llvm-commits]

https://github.com/nico created https://github.com/llvm/llvm-project/pull/215943

None

>From 1a8e07c372d7709f71f7f7f4dbdab2acfe806bc7 Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis at chromium.org>
Date: Wed, 12 Aug 2026 21:26:01 -0700
Subject: [PATCH] [gn] port 3fe75b62c3a977

---
 llvm/utils/gn/secondary/clang/include/clang/Basic/BUILD.gn | 1 +
 llvm/utils/gn/secondary/clang/unittests/CIR/BUILD.gn       | 1 +
 2 files changed, 2 insertions(+)

diff --git a/llvm/utils/gn/secondary/clang/include/clang/Basic/BUILD.gn b/llvm/utils/gn/secondary/clang/include/clang/Basic/BUILD.gn
index 202ffda4f7b0f..ac368bd090460 100644
--- a/llvm/utils/gn/secondary/clang/include/clang/Basic/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang/include/clang/Basic/BUILD.gn
@@ -21,6 +21,7 @@ write_cmake_config("version") {
 diag_groups = [
   "Analysis",
   "AST",
+  "CodeGen",
   "Comment",
   "Common",
   "CrossTU",
diff --git a/llvm/utils/gn/secondary/clang/unittests/CIR/BUILD.gn b/llvm/utils/gn/secondary/clang/unittests/CIR/BUILD.gn
index c232b23c2abfb..888071f9316c1 100644
--- a/llvm/utils/gn/secondary/clang/unittests/CIR/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang/unittests/CIR/BUILD.gn
@@ -2,6 +2,7 @@
 # part of the GN build.
 group("CIRUnitTests") {
   sources = [
+    "CIRDiagnosticHandlerTest.cpp",
     "CallOpTest.cpp",
     "ControlFlowTest.cpp",
     "FenvOpTest.cpp",