[llvm] [Convergence] allow non-convergent ops before entry and loop intrinsics (PR #65939)

[Sameer Sahasrabuddhe via llvm-commits]

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@@ -63,6 +63,8 @@ template <typename ContextT> class GenericConvergenceVerifier {
   // and not the token values.
   DenseMap<const InstructionT *, const InstructionT *> Tokens;
 
+  bool SeenFirstConvOp = false;
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ssahasra wrote:

It gets reset at the start of every block in the [visit method](https://github.com/ssahasra/llvm-project/blob/fa6dd7a24af2b02f236ec3b980d9407e86c2c4aa/llvm/include/llvm/IR/GenericConvergenceVerifierImpl.h#L76).

https://github.com/llvm/llvm-project/pull/65939