[NFC] [SCCP] remove unused functions (#105603)

Author: fmayer

llvm/include/llvm/Transforms/Utils/SCCPSolver.h

@@ -167,9 +167,6 @@ class SCCPSolver {
   /// Return either a Constant or nullptr for a given Value.
   Constant *getConstantOrNull(Value *V) const;
 
-  /// Return a reference to the set of argument tracked functions.
-  SmallPtrSetImpl<Function *> &getArgumentTrackedFunctions();
-
   /// Set the Lattice Value for the arguments of a specialization \p F.
   /// If an argument is Constant then its lattice value is marked with the
   /// corresponding actual argument in \p Args. Otherwise, its lattice value

llvm/lib/Transforms/Utils/SCCPSolver.cpp

@@ -829,10 +829,6 @@ class SCCPInstVisitor : public InstVisitor<SCCPInstVisitor> {
 
   Constant *getConstantOrNull(Value *V) const;
 
-  SmallPtrSetImpl<Function *> &getArgumentTrackedFunctions() {
-    return TrackingIncomingArguments;
-  }
-
   void setLatticeValueForSpecializationArguments(Function *F,
                                        const SmallVectorImpl<ArgInfo> &Args);
 
@@ -2157,10 +2153,6 @@ Constant *SCCPSolver::getConstantOrNull(Value *V) const {
   return Visitor->getConstantOrNull(V);
 }
 
-SmallPtrSetImpl<Function *> &SCCPSolver::getArgumentTrackedFunctions() {
-  return Visitor->getArgumentTrackedFunctions();
-}
-
 void SCCPSolver::setLatticeValueForSpecializationArguments(Function *F,
                                    const SmallVectorImpl<ArgInfo> &Args) {
   Visitor->setLatticeValueForSpecializationArguments(F, Args);