[clang] [CIR] Initial extra attributes for call operation (PR #145178)

[Henrich Lauko via cfe-commits]

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@@ -368,4 +368,34 @@ def CIR_VisibilityAttr : CIR_Attr<"Visibility", "visibility"> {
   }];
 }
 
+//===----------------------------------------------------------------------===//
+// ExtraFuncAttributesAttr
+//===----------------------------------------------------------------------===//
+
+def ExtraFuncAttributesAttr : CIR_Attr<"ExtraFuncAttributes", "extra"> {
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xlauko wrote:

Yeah, I am trying to get it work without custom unit attributes and `ExtraFuncAttributesAttr` but it will take me a bit more time. I first need to finish assembly format for FuncOp, so its easier to pull out these extra attrs. But I am almost there.

https://github.com/llvm/llvm-project/pull/145178