Integrate LLVM at llvm/llvm-project@a4fa667dee60

Updates LLVM usage to match
[a4fa667dee60](https://github.com/llvm/llvm-project/commit/a4fa667dee60)

PiperOrigin-RevId: 355945749
diff --git a/SUBMODULE_VERSIONS.txt b/SUBMODULE_VERSIONS.txt
index 5dff149..2748469 100644
--- a/SUBMODULE_VERSIONS.txt
+++ b/SUBMODULE_VERSIONS.txt
@@ -5,7 +5,7 @@
 b1fbd33c06cdb0024c67733c6fdec2009d17b384 third_party/googletest
 88b845dee001723c4a0db1fe5477de735b6d3bb0 third_party/liburing
 fdb4089ea51649b03a20e2be7ebac8b4d9b00dbb third_party/llvm-bazel
-a1a1d338e99dc9c6d1234b70f43dea2e1bb2f8ce third_party/llvm-project
+a4fa667dee6012e350bd405ee7a759a53738b279 third_party/llvm-project
 4e501d8c6e2d834999301a2492adefe5ddbdc0cb third_party/mlir-emitc
 99bc05f2e45437f523ed5c89506a49b17acbf743 third_party/mlir-hlo
 2b2bd45bbf9be04fd22ece5cc1f54679202e9257 third_party/pffft
diff --git a/third_party/llvm-project b/third_party/llvm-project
index a1a1d33..a4fa667 160000
--- a/third_party/llvm-project
+++ b/third_party/llvm-project
@@ -1 +1 @@
-Subproject commit a1a1d338e99dc9c6d1234b70f43dea2e1bb2f8ce
+Subproject commit a4fa667dee6012e350bd405ee7a759a53738b279