Integrate LLVM at llvm/llvm-project@671f0e2e189c

Updates LLVM usage to match
[671f0e2e189c](https://github.com/llvm/llvm-project/commit/671f0e2e189c)

PiperOrigin-RevId: 371011125
diff --git a/SUBMODULE_VERSIONS.txt b/SUBMODULE_VERSIONS.txt
index 8bf2e9c..138c9ee 100644
--- a/SUBMODULE_VERSIONS.txt
+++ b/SUBMODULE_VERSIONS.txt
@@ -5,7 +5,7 @@
 b1fbd33c06cdb0024c67733c6fdec2009d17b384 third_party/googletest
 88b845dee001723c4a0db1fe5477de735b6d3bb0 third_party/liburing
 24e073a2b2f5b60d0a3a2a8ad007de47c9430863 third_party/llvm-bazel
-bf9eef92b6cd71d262ac12ce6c4919271bd6c910 third_party/llvm-project
+671f0e2e189c561512511331d95de382e2d6d15d third_party/llvm-project
 679d7183b657a24f48d16de1fcefb20d7cd1f6a2 third_party/mlir-emitc
 9e9434a0ea92c9ff1519a0ac97fba86282d6fde4 third_party/mlir-hlo
 2b2bd45bbf9be04fd22ece5cc1f54679202e9257 third_party/pffft
diff --git a/third_party/llvm-project b/third_party/llvm-project
index bf9eef9..671f0e2 160000
--- a/third_party/llvm-project
+++ b/third_party/llvm-project
@@ -1 +1 @@
-Subproject commit bf9eef92b6cd71d262ac12ce6c4919271bd6c910
+Subproject commit 671f0e2e189c561512511331d95de382e2d6d15d