Integrate LLVM at llvm/llvm-project@5994201c8e4c

Updates LLVM usage to match
[5994201c8e4c](https://github.com/llvm/llvm-project/commit/5994201c8e4c)

PiperOrigin-RevId: 385657588

SUBMODULE_VERSIONS.txt

diff --git a/SUBMODULE_VERSIONS.txt b/SUBMODULE_VERSIONS.txt
index d859bdd..5e2cfcd 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
-50302feb1d2cce4a9fee38621cc7596b3c66ff02 third_party/llvm-project
+5994201c8e4c69518a10e143d09973b77886c90f third_party/llvm-project
 1b6e71edd1df812640d8453814afccb1bc12e170 third_party/mlir-hlo
 4c7697dbe973ed01ae6fbec37d186ebd05982e1f third_party/pybind11
 2e1b5fb39ebc2ef4cb77005f8267e4f3a6241ba1 third_party/spirv_cross

third_party/llvm-project

diff --git a/third_party/llvm-project b/third_party/llvm-project
index 50302fe..5994201 160000
--- a/third_party/llvm-project
+++ b/third_party/llvm-project
@@ -1 +1 @@
-Subproject commit 50302feb1d2cce4a9fee38621cc7596b3c66ff02
+Subproject commit 5994201c8e4c69518a10e143d09973b77886c90f