[AArch64][Inliner] Adjust savings multiplier for aarch64 inliner

llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h

InstructionCost getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
                                      CmpInst::Predicate VecPred,
                                      TTI::TargetCostKind CostKind,
                                      const Instruction *I = nullptr);
 
   TTI::MemCmpExpansionOptions enableMemCmpExpansion(bool OptSize,
                                                     bool IsZeroCmp) const;
   bool useNeonVector(const Type *Ty) const;
 
+  unsigned getInliningCostBenefitAnalysisSavingsMultiplier() const { return 3; }
+
   InstructionCost
   getMemoryOpCost(unsigned Opcode, Type *Src, MaybeAlign Alignment,
                   unsigned AddressSpace, TTI::TargetCostKind CostKind,
                   TTI::OperandValueInfo OpInfo = {TTI::OK_AnyValue, TTI::OP_None},
                   const Instruction *I = nullptr);
 
   InstructionCost getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys);