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

[Julius Alexandre via llvm-commits]

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@@ -435,6 +435,9 @@ struct SDNodeFlags {
                             NonNeg | NoNaNs | NoInfs | SameSign | InBounds,
     FastMathFlags = NoNaNs | NoInfs | NoSignedZeros | AllowReciprocal |
                     AllowContract | ApproximateFuncs | AllowReassociation,
+
+    // Flag for disabling optimization
+    NoMerge = 1 << 15,
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wizardengineer wrote:

This shouldn't be here, I'll make sure to remove it

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