From e402868a4413956da8eeebf4a20ef557201e3462 Mon Sep 17 00:00:00 2001
From: Tyler Mandry <tmandry@google.com>
Date: Thu, 4 Jan 2024 18:43:58 -0800
Subject: [PATCH] Handle move of cpu_model.c

This happened in https://github.com/llvm/llvm-project/pull/75635/files
and shows up when building against a recent commit of LLVM.
---
 build.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/build.rs b/build.rs
index 04861167..a85d1a57 100644
--- a/build.rs
+++ b/build.rs
@@ -601,7 +601,12 @@ mod c {
             build_aarch64_out_of_line_atomics_libraries(&src_dir, cfg);
 
             // Some run-time CPU feature detection is necessary, as well.
-            sources.extend(&[("__aarch64_have_lse_atomics", "cpu_model.c")]);
+            let cpu_model_src = if src_dir.join("cpu_model.c").exists() {
+                "cpu_model.c"
+            } else {
+                "cpu_model/aarch64.c"
+            };
+            sources.extend(&[("__aarch64_have_lse_atomics", cpu_model_src)]);
         }
 
         let mut added_sources = HashSet::new();