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

[Matt Arsenault via llvm-commits]

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@@ -9102,7 +9104,40 @@ LegalizerHelper::lowerISFPCLASS(MachineInstr &MI) {
   }
 
   // TODO: Try inverting the test with getInvertedFPClassTest like the DAG
-  // version
+  auto GetInvertedFPClassTest =
+      [](const llvm::FPClassTest Test) -> llvm::FPClassTest {
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arsenm wrote:

https://github.com/llvm/llvm-project/blob/faefb70c7a771ae646df3d5defe122cfff2aac7c/llvm/include/llvm/CodeGen/CodeGenCommonISel.h#L228

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