[llvm] [gn build] Port b000f9032911 (PR #203537)

[Nico Weber via llvm-commits]

https://github.com/nico created https://github.com/llvm/llvm-project/pull/203537

None

>From efc4b34bd3252f711167a1d904d4f5a86496ed8a Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis at chromium.org>
Date: Fri, 12 Jun 2026 10:20:40 -0400
Subject: [PATCH] [gn build] Port b000f9032911

---
 llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn b/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn
index f1d7b37ae6d88..4af4d43d9bfc6 100644
--- a/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn
@@ -341,6 +341,7 @@ copy("Headers") {
     "riscv_mips.h",
     "riscv_nds.h",
     "riscv_ntlh.h",
+    "riscv_packed_simd.h",
     "rtmintrin.h",
     "s390intrin.h",
     "serializeintrin.h",