[clang] [llvm] [SystemZ] Add i128 support for z/OS XPLINK64 ABI (PR #223026)

[Ulrich Weigand via cfe-commits]

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@@ -203,6 +203,9 @@ def err_drv_unsupported_unwind_for_platform : Error<
   "unsupported unwind library '%0' for platform '%1'">;
 def err_drv_incompatible_unwindlib : Error<
   "--rtlib=libgcc requires --unwindlib=libgcc">;
+def err_drv_incompatible_arch : Error<
+  "'%0' option requires at least '%1', current '%2' is too low">;
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uweigand wrote:

I thought this whole logic was supposed to be removed?

https://github.com/llvm/llvm-project/pull/223026