[llvm] Added InvertedFPClassTest in legalizerHelper (PR #133403)

[Matt Arsenault via llvm-commits]

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@@ -9252,7 +9257,9 @@ LegalizerHelper::lowerISFPCLASS(MachineInstr &MI) {
     }
     appendToRes(NormalRes);
   }
-
+  if (isInverted) {
+    Res = MIRBuilder.buildNot(DstTy, Res);
+  }
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arsenm wrote:

Don't need braces 

https://github.com/llvm/llvm-project/pull/133403