Auto merge of rust-lang#127347 - DianQK:test-llvm-96631, r=<try>

[Don't merge] Test the performance of 96631

Test for llvm/llvm-project#96631 (comment).

r? ghost

`@rustbot` label +S-experimental

Author: bors

.gitmodules

@@ -32,8 +32,8 @@
 	shallow = true
 [submodule "src/llvm-project"]
 	path = src/llvm-project
-	url = https://github.com/rust-lang/llvm-project.git
-	branch = rustc/18.1-2024-05-19
+	url = https://github.com/DianQK/llvm-project.git
+	branch = test-llvm-96631
 	shallow = true
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book