[llvm] [IR] Add llvm `clmul` intrinsic (PR #140301)

[Oscar Smith via llvm-commits]

================
@@ -2103,6 +2105,12 @@ let IntrProperties = [IntrNoMem, IntrNoSync, IntrWillReturn] in {
                                LLVMMatchType<0>,
                                LLVMScalarOrSameVectorWidth<0, llvm_i1_ty>,
                                llvm_i32_ty]>;
+  def int_vp_clmul : DefaultAttrsIntrinsic<[ llvm_anyvector_ty ],
----------------
oscardssmith wrote:

no. was just copying fshr code to try and get the vector version as well

https://github.com/llvm/llvm-project/pull/140301