Integrate LLVM at llvm/llvm-project@b740899c500b

Updates LLVM usage to match
[b740899c500b](https://github.com/llvm/llvm-project/commit/b740899c500b)

PiperOrigin-RevId: 337679767
diff --git a/SUBMODULE_VERSIONS b/SUBMODULE_VERSIONS
index 2aac894..e2c1c48 100644
--- a/SUBMODULE_VERSIONS
+++ b/SUBMODULE_VERSIONS
@@ -5,7 +5,7 @@
 a5d9d0f7d368054fd1691aedf1db4116efcc233e third_party/flatbuffers
 4fb0ff7069bd88ee85902f4d0bb62794e5f6d021 third_party/flatcc
 f2fb48c3b3d79a75a88a99fba6576b25d42ec528 third_party/googletest
-51ff04567b2f8d06b2062bd3ed72eab2e93e4466 third_party/llvm-project
+b740899c500ba6a707711b74bfdacf104e8a8067 third_party/llvm-project
 17b12a4481daa150e2d1ea3ada086b551b856707 third_party/marl
 d2cdb70e038370b5e28f353fe98ccd70af1cbc25 third_party/mlir-emitc
 d8c7ee00a687ac369e62e2032514a93a9b413502 third_party/pybind11