[llvm] Add clmul zext AArch64 lowering tests (PR #179641)

[David Green via llvm-commits]

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@@ -465,3 +465,223 @@ define i64 @clmul_i64(i64 %x, i64 %y) {
   %a = call i64 @llvm.clmul.i64(i64 %x, i64 %y)
   ret i64 %a
 }
+
+define i8 @clmul_i8_zext(i4 %x, i4 %y) {
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davemgreen wrote:

I would remove i4, but add i64->i128.

https://github.com/llvm/llvm-project/pull/179641