diff --git a/llvm/lib/Target/NVPTX/NVPTXTargetTransformInfo.h b/llvm/lib/Target/NVPTX/NVPTXTargetTransformInfo.h
--- a/llvm/lib/Target/NVPTX/NVPTXTargetTransformInfo.h
+++ b/llvm/lib/Target/NVPTX/NVPTXTargetTransformInfo.h
@@ -90,9 +90,9 @@
     return true;
   }
 
-  // Increase the inlining cost threshold by a factor of 5, reflecting that
+  // Increase the inlining cost threshold by a factor of 11, reflecting that
   // calls are particularly expensive in NVPTX.
-  unsigned getInliningThresholdMultiplier() { return 5; }
+  unsigned getInliningThresholdMultiplier() { return 11; }
 
   InstructionCost getArithmeticInstrCost(
       unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind,