[clang] [llvm] [X86][AVX512] rematerialize smaller predicate masks (PR #166178)

[Simon Pilgrim via llvm-commits]

================
@@ -90,13 +90,13 @@ def err_unterminated___pragma : Error<"missing terminating ')' character">;
 
 def err_conflict_marker : Error<"version control conflict marker in file">;
 
-def err_counter_overflow : Error<
-  "'__COUNTER__' value cannot exceed 2'147'483'647">;
-def ext_counter : Extension<
-  "'__COUNTER__' is a C2y extension">, InGroup<C2y>;
-def warn_counter : Warning<
-  "'__COUNTER__' is incompatible with standards before C2y">,
-  InGroup<CPre2yCompat>, DefaultIgnore;
----------------
RKSimon wrote:

unnecessary? revert this?

https://github.com/llvm/llvm-project/pull/166178