[llvm] CodeGen: Add ISD::AssertNoFPClass (PR #138839)

[Matt Arsenault via llvm-commits]

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@@ -80,7 +80,9 @@ class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer {
   /// Pretend all of this node's results are legal.
   bool IgnoreNodeResults(SDNode *N) const {
     return N->getOpcode() == ISD::TargetConstant ||
-           N->getOpcode() == ISD::Register;
+           N->getOpcode() == ISD::Register ||
+           (N->getOpcode() == ISD::AssertNoFPClass &&
+            IgnoreNodeResults(N->getOperand(0).getNode()));
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arsenm wrote:

Shouldn't be touching this, this is not special in the way that TargetConstant and Register are 

https://github.com/llvm/llvm-project/pull/138839