diff --git a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
--- a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
@@ -2491,6 +2491,17 @@
     ],
 )
 
+cc_library(
+    name = "Diff",
+    testonly = True,
+    srcs = glob(["tools/llvm-diff/lib/*.cpp"]),
+    hdrs = glob(["tools/llvm-diff/lib/*.h"]),
+    deps = [
+        ":Core",
+        ":Support",
+    ],
+)
+
 ################################################################################
 # LLVM toolchain and development binaries
 
@@ -4072,9 +4083,8 @@
     copts = llvm_copts,
     stamp = 0,
     deps = [
-        ":AsmParser",
-        ":BitReader",
         ":Core",
+        ":Diff",
         ":IRReader",
         ":Support",
     ],