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

[Simon Tatham via llvm-commits]

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@@ -1825,6 +1825,15 @@ def int_coro_subfn_addr : DefaultAttrsIntrinsic<
     [IntrReadMem, IntrArgMemOnly, ReadOnly<ArgIndex<0>>,
      NoCapture<ArgIndex<0>>]>;
 
+///===-------------------------- Constant Time Intrinsics
+///--------------------------===//
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statham-arm wrote:

Nit: your ASCII art has been accidentally word-wrapped :slightly_smiling_face: 

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