[llvm] [x86] Add tan intrinsic part 4 (PR #90503)

[Farzon Lotfi via llvm-commits]

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@@ -648,6 +649,7 @@ class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer {
   void ExpandFloatRes_FSIN      (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_FSQRT     (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandFloatRes_FSUB      (SDNode *N, SDValue &Lo, SDValue &Hi);
+  void ExpandFloatRes_FTAN(SDNode *N, SDValue &Lo, SDValue &Hi);
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farzonl wrote:

I can add some clang-format off\ons in the code base to handle this. 

https://github.com/llvm/llvm-project/pull/90503