Set the threshold multiplier to 2 instead

Author: nikic

llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.h

@@ -38,6 +38,7 @@ class SystemZTTIImpl : public BasicTTIImplBase<SystemZTTIImpl> {
   /// \name Scalar TTI Implementations
   /// @{
 
+  unsigned getInliningThresholdMultiplier() const { return 2; }
   unsigned adjustInliningThreshold(const CallBase *CB) const;
 
   InstructionCost getIntImmCost(const APInt &Imm, Type *Ty,