[llvm] [AArch64][SME2] Add ZT0 attributes to SMEAttrs (PR #77607)

[Kerry McLaughlin via llvm-commits]

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@@ -2160,6 +2160,21 @@ void Verifier::verifyFunctionAttrs(FunctionType *FT, AttributeList Attrs,
            V);
   }
 
+  if (Attrs.hasFnAttr("aarch64_sme_new_zt0") ||
+      Attrs.hasFnAttr("aarch64_sme_in_zt0") ||
+      Attrs.hasFnAttr("aarch64_sme_inout_zt0") ||
+      Attrs.hasFnAttr("aarch64_sme_out_zt0") ||
+      Attrs.hasFnAttr("aarch64_sme_preserved_zt0")) {
+    Check((Attrs.hasFnAttr("aarch64_sme_new_zt0") ^
+           Attrs.hasFnAttr("aarch64_sme_in_zt0") ^
+           Attrs.hasFnAttr("aarch64_sme_inout_zt0") ^
+           Attrs.hasFnAttr("aarch64_sme_out_zt0") ^
+           Attrs.hasFnAttr("aarch64_sme_preserved_zt0")),
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kmclaughlin-arm wrote:

This is much better, thanks :)

https://github.com/llvm/llvm-project/pull/77607