[llvm] [gn build] Port 430e1be254f9 (PR #191540)

[Nico Weber via llvm-commits]

https://github.com/nico created https://github.com/llvm/llvm-project/pull/191540

None

>From fe7be2511f727580490698e8557462bc81cf35bc Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis at chromium.org>
Date: Fri, 10 Apr 2026 18:00:36 -0400
Subject: [PATCH] [gn build] Port 430e1be254f9

---
 .../gn/secondary/clang-tools-extra/clang-tidy/llvm/BUILD.gn      | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/llvm/BUILD.gn b/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/llvm/BUILD.gn
index 96ba6235f2dd4..c6893bcccd46b 100644
--- a/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/llvm/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/llvm/BUILD.gn
@@ -19,6 +19,7 @@ static_library("llvm") {
     "PreferIsaOrDynCastInConditionalsCheck.cpp",
     "PreferRegisterOverUnsignedCheck.cpp",
     "PreferStaticOverAnonymousNamespaceCheck.cpp",
+    "RedundantCastingCheck.cpp",
     "TwineLocalCheck.cpp",
     "TypeSwitchCaseTypesCheck.cpp",
     "UseNewMLIROpBuilderCheck.cpp",