[llvm] [Uniformity] Avoid marking all PHIs as divergent in join blocks (PR #157808)

[David Stuttard via llvm-commits]

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@@ -455,9 +455,11 @@ template <typename ContextT> class GenericUniformityAnalysisImpl {
   /// the worklist.
   void taintAndPushAllDefs(const BlockT &JoinBlock);
 
-  /// \brief Mark all phi nodes in \p JoinBlock as divergent and push them on
-  /// the worklist.
-  void taintAndPushPhiNodes(const BlockT &JoinBlock);
+  /// \brief Mark phi nodes in \p JoinBlock as divergent and push them on
+  /// the worklist if they are divergent over the by the path \p JoinBlock
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dstutt wrote:

over the by the

https://github.com/llvm/llvm-project/pull/157808