[clang] [flang] [flang] Add UNSIGNED (PR #113504)

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@@ -213,6 +213,22 @@ def fir_IntegerType : FIR_Type<"Integer", "int"> {
   }];
 }
 
+def fir_UnsignedType : FIR_Type<"Unsigned", "unsigned"> {
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jeanPerier wrote:

I understand the `AnyUnsignedInteger.predicate` is needed, but I do not understand why the predicate for this type is needed given I do not see where it is generated/used (which I may just have missed in the patch).

https://github.com/llvm/llvm-project/pull/113504