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
@@ -187,7 +187,6 @@
     hdrs = glob([
         "include/llvm/Support/**/*.h",
         "include/llvm/ADT/*.h",
-        "include/llvm/MC/*.h",  # TODO(maskray): Fix the layering issue.
     ]) + [
         "include/llvm-c/Core.h",
         "include/llvm-c/DataTypes.h",
@@ -453,6 +452,10 @@
         "utils/TableGen/*.cpp",
         "utils/TableGen/GlobalISel/*.cpp",
 
+        # Some tablegen sources include headers from MC, so these have to be
+        # listed here.
+        "include/llvm/MC/*.h",
+
         # We have to include these headers here as well as in the `hdrs` below
         # to allow the `.cpp` files to use file-relative-inclusion to find
         # them, even though consumers of this library use inclusion relative to