[llvm] [ConstantTime][LLVM] Add llvm.ct.select intrinsic with generic SelectionDAG lowering (PR #166702)

[Julius Alexandre via llvm-commits]

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@@ -760,6 +760,7 @@ def reset_fpmode   : SDNode<"ISD::RESET_FPMODE", SDTNone, [SDNPHasChain]>;
 
 def setcc      : SDNode<"ISD::SETCC"      , SDTSetCC>;
 def select     : SDNode<"ISD::SELECT"     , SDTSelect>;
+def ct_select : SDNode<"ISD::CT_SELECT", SDTSelect>;
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wizardengineer wrote:

Lined it up in 64613ed31ef6.

https://github.com/llvm/llvm-project/pull/166702