When testing whether a given SCEV depends on a temporary symbolic

name, test whether the SCEV itself is that temporary symbolic name,
in addition to checking whether the symbolic name appears as a
possibly-indirect operand.

llvm-svn: 96216

llvm/lib/Analysis/ScalarEvolution.cpp

@@ -2566,7 +2566,7 @@ ScalarEvolution::ForgetSymbolicName(Instruction *I, const SCEV *SymName) {
     if (It != Scalars.end()) {
       // Short-circuit the def-use traversal if the symbolic name
       // ceases to appear in expressions.
-      if (!It->second->hasOperand(SymName))
+      if (It->second != SymName && !It->second->hasOperand(SymName))
         continue;
 
       // SCEVUnknown for a PHI either means that it has an unrecognized