[clang] [CIR] Update CIR unary operations (PR #201727)

[Erich Keane via cfe-commits]

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@@ -2436,7 +2462,7 @@ def CIR_AddOp
   let description = [{
     The `cir.add` operation performs addition on integer operands. Both
     operands and the result must have the same integer or vector-of-integer
-    type. Floating-point addition is performed by `cir.fadd`.
+    type.
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erichkeane wrote:

Why did these comments go away? They seemed at least somewhat useful?

https://github.com/llvm/llvm-project/pull/201727