[llvm] DAGCombiner::visitBITCAST: CastLoad strip AssertNoFPClass (PR #184952)

[YunQiang Su via llvm-commits]

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@@ -9306,6 +9306,67 @@ SDValue TargetLowering::expandIS_FPCLASS(EVT ResultVT, SDValue Op,
   // Tests that involve more than one class should be processed first.
   SDValue PartialRes;
 
+  // Handle sign bit tests first (fcPositive/fcNegative).
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wzssyqa wrote:

I see. That's why I mark this PR as WIP.

https://github.com/llvm/llvm-project/pull/184952