Integrate LLVM at llvm/llvm-project@6a7a2ee8161d

Updates LLVM usage to match
[6a7a2ee8161d](https://github.com/llvm/llvm-project/commit/6a7a2ee8161d)

PiperOrigin-RevId: 387344937
diff --git a/SUBMODULE_VERSIONS.txt b/SUBMODULE_VERSIONS.txt
index f1495e3..a754b3a 100644
--- a/SUBMODULE_VERSIONS.txt
+++ b/SUBMODULE_VERSIONS.txt
@@ -4,7 +4,7 @@
 aa533abfd4232b01f9e57041d70114d5a77e6de0 third_party/googletest
 88b845dee001723c4a0db1fe5477de735b6d3bb0 third_party/liburing
 acd6f6f014c25e46363e718381e0b35205df2d83 third_party/libyaml
-de7a4e53a22b27d47503b9fc513898251319d5c7 third_party/llvm-project
+6a7a2ee8161da84d9a58a88b497b0b47c8df99f3 third_party/llvm-project
 50d567c403292d77e1323b5b9b01b0f974867162 third_party/mlir-hlo
 4c7697dbe973ed01ae6fbec37d186ebd05982e1f third_party/pybind11
 2e1b5fb39ebc2ef4cb77005f8267e4f3a6241ba1 third_party/spirv_cross
diff --git a/third_party/llvm-project b/third_party/llvm-project
index de7a4e5..6a7a2ee 160000
--- a/third_party/llvm-project
+++ b/third_party/llvm-project
@@ -1 +1 @@
-Subproject commit de7a4e53a22b27d47503b9fc513898251319d5c7
+Subproject commit 6a7a2ee8161da84d9a58a88b497b0b47c8df99f3