Integrate LLVM at llvm/llvm-project@a48d480e1f7e

Updates LLVM usage to match
[a48d480e1f7e](https://github.com/llvm/llvm-project/commit/a48d480e1f7e)

PiperOrigin-RevId: 335597620
Change-Id: I8a77c9d06e64fbab97b733c6418e85081eb80738
diff --git a/tensorflow/workspace.bzl b/tensorflow/workspace.bzl
index ceb2930..06e424f 100755
--- a/tensorflow/workspace.bzl
+++ b/tensorflow/workspace.bzl
@@ -712,8 +712,8 @@
     )
 
     # Check out LLVM and MLIR from llvm-project.
-    LLVM_COMMIT = "3641d375f6747237b1b55a25a55e9028d8a67a02"
-    LLVM_SHA256 = "ecbadae4f3ea35181ea6f26853d45e85668b8cf15c002770527d0407fb339659"
+    LLVM_COMMIT = "a48d480e1f7ebc5d5f93507fe1f519496621e259"
+    LLVM_SHA256 = "83023ec26f4b32f4a4233e40ffaa02e808627b1a483d3ab5dcdb7d3946258bef"
     LLVM_URLS = [
         "https://storage.googleapis.com/mirror.tensorflow.org/github.com/llvm/llvm-project/archive/{commit}.tar.gz".format(commit = LLVM_COMMIT),
         "https://github.com/llvm/llvm-project/archive/{commit}.tar.gz".format(commit = LLVM_COMMIT),