Integrate LLVM at llvm/llvm-project@19734ae6f054

Updates LLVM usage to match
[19734ae6f054](https://github.com/llvm/llvm-project/commit/19734ae6f054)

PiperOrigin-RevId: 398640511

SUBMODULE_VERSIONS.txt

diff --git a/SUBMODULE_VERSIONS.txt b/SUBMODULE_VERSIONS.txt
index c65fc8d..0a46283 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
-c6013f71a4555f6d9ef9c60e6bc4376ad63f1c47 third_party/llvm-project
+19734ae6f05498a75d4bb3960be06f5d704f8528 third_party/llvm-project
 3dc10b441f7d8e5cd167601a5e153c6083d6fcc7 third_party/mlir-hlo
 3f701faace7addc75d16dea8a6cd769fa5b3f260 third_party/musl
 4c7697dbe973ed01ae6fbec37d186ebd05982e1f third_party/pybind11

third_party/llvm-project

diff --git a/third_party/llvm-project b/third_party/llvm-project
index c6013f7..19734ae 160000
--- a/third_party/llvm-project
+++ b/third_party/llvm-project
@@ -1 +1 @@
-Subproject commit c6013f71a4555f6d9ef9c60e6bc4376ad63f1c47
+Subproject commit 19734ae6f05498a75d4bb3960be06f5d704f8528