[PATCH] D56859: [SelectionDAG] Add static getMaxNumOperands function to SDNode.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: RKSimon, craig.topper, efriedma, aemerson.

https://reviews.llvm.org/D56859

Files:
  llvm/include/llvm/CodeGen/SelectionDAGNodes.h


Index: llvm/include/llvm/CodeGen/SelectionDAGNodes.h
===================================================================
--- llvm/include/llvm/CodeGen/SelectionDAGNodes.h
+++ llvm/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -898,6 +898,11 @@
   /// Return the number of values used by this operation.
   unsigned getNumOperands() const { return NumOperands; }
 
+  /// Return the maximum number of operands that a SDNode can hold.
+  static constexpr size_t getMaxNumOperands() {
+    return std::numeric_limits<decltype(SDNode::NumOperands)>::max();
+  }
+
   /// Helper method returns the integer value of a ConstantSDNode operand.
   inline uint64_t getConstantOperandVal(unsigned Num) const;
 


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