[clang] [llvm] Add cross builtins and cross HLSL function to DirectX and SPIR-V backend (PR #109180)

[Chris B via cfe-commits]

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@@ -10506,7 +10506,9 @@ def err_second_argument_to_cwsc_not_pointer : Error<
   "second argument to __builtin_call_with_static_chain must be of pointer type">;
 
 def err_vector_incorrect_num_initializers : Error<
-  "%select{too many|too few}0 elements in vector initialization (expected %1 elements, have %2)">;
+  "%select{too many|too few}0 elements in vector %select{initialization|operand}3 (expected %1 elements, have %2)">;
+def err_incorrect_vector_element_count  : Error<
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llvm-beanz wrote:

Also maybe rename `err_vector_incorrect_num_initializers` -> `err_vector_incorrect_num_elements`?

https://github.com/llvm/llvm-project/pull/109180