[clang] [llvm] [AArch64] Add intrinsics for 9.6 crypto instructions (PR #165545)

[Kerry McLaughlin via llvm-commits]

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@@ -272,9 +272,16 @@ class Intrinsic {
           Proto[I] == 'R' || Proto[I] == '@' || Proto[I] == '!')
         break;
 
+      if (Proto[I] == '2')
+        Param += 1;
+      if (Proto[I] == '4')
+        Param += 3;
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kmclaughlin-arm wrote:

Sorry I didn't spot this before, but looking at the tests above it seems like only the `pmull_pair_n` & `pmlal_pair_n` builtins take a splat operand. Since they both only have `x2` variants, I'm wondering if handling the `x4` case can be removed from this patch (and possibly the adjustment to `Param` below)?

https://github.com/llvm/llvm-project/pull/165545