[llvm] [AMDGPU][TTI] Add Target Hook for Instruction Uniformity (getInstructionUniformity) (PR #137639)

[Pankaj Dwivedi via llvm-commits]

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@@ -407,6 +408,11 @@ template <typename ContextT> class GenericUniformityAnalysisImpl {
   void recordTemporalDivergence(ConstValueRefT, const InstructionT *,
                                 const CycleT *);
 
+  bool isAnyOperandUniform(const InstructionT &Instr) const;
+
+  /// \brief keep track of special target intrinsics that can be proven uniform.
+  void addSpecialUniformIntrinsic(const InstructionT &Instr);
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PankajDwivedi-25 wrote:

The term `special` means here that `intrinsic can be uniform` though not all of its operands are uniform.

Right, I am also not convinced of this name. will rename it later based on refined functionality.


https://github.com/llvm/llvm-project/pull/137639