improvise CIROps.td

Author: shrikardongre

clang/include/clang/CIR/Dialect/IR/CIROps.td

@@ -5304,6 +5304,8 @@ def PrefetchOp : CIR_Op<"prefetch"> {
           IntMaxValue<3>]>:$locality,
         UnitAttr:$isWrite);
 
+  let results = (outs VoidPtr:$result);
+
   let assemblyFormat = [{
     `(` $addr `:` qualified(type($addr)) `)`
         `locality``(` $locality `)`