Integrate LLVM at llvm/llvm-project@76f734040a54

Updates LLVM usage to match
[76f734040a54](https://github.com/llvm/llvm-project/commit/76f734040a54)

PiperOrigin-RevId: 383312586
Change-Id: I9d9d7f40ce1701b620cda9a0db3623b91edc930f
diff --git a/third_party/llvm/workspace.bzl b/third_party/llvm/workspace.bzl
index 063fda4..b33525f 100644
--- a/third_party/llvm/workspace.bzl
+++ b/third_party/llvm/workspace.bzl
@@ -4,8 +4,8 @@
 
 def repo(name):
     """Imports LLVM."""
-    LLVM_COMMIT = "745758acf3c295e3bf9f9dd283a3568c912a1827"
-    LLVM_SHA256 = "d427c3991c73a628be7b2631ace3d2741fb80df4f5aed731fd771b543b6485a4"
+    LLVM_COMMIT = "76f734040a54622b847729e5acb4480e667d2c74"
+    LLVM_SHA256 = "28589869f5ae24e7ac1c7324e6965b4751c4823f306ebce8276c23cb84b9bc73"
 
     tf_http_archive(
         name = name,