Add an extra parameter that Chris requested

llvm-svn: 22665

llvm/include/llvm/Instructions.h

@@ -807,7 +807,7 @@ public:
   /// hasConstantValue - If the specified PHI node always merges together the 
   /// same value, return the value, otherwise return null.
   ///
-  Value *hasConstantValue();
+  Value *hasConstantValue(bool AllowNonDominatingInstruction = false);
   
   /// Methods for support type inquiry through isa, cast, and dyn_cast:
   static inline bool classof(const PHINode *) { return true; }

llvm/lib/VMCore/Instructions.cpp

@@ -135,7 +135,7 @@ void PHINode::resizeOperands(unsigned NumOps) {
 /// hasConstantValue - If the specified PHI node always merges together the same
 /// value, return the value, otherwise return null.
 ///
-Value *PHINode::hasConstantValue() {
+Value *PHINode::hasConstantValue(bool AllowNonDominatingInstruction) {
   // If the PHI node only has one incoming value, eliminate the PHI node...
   if (getNumIncomingValues() == 1)
     return getIncomingValue(0);