diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 45079c098984b33c315ad4d03583a872190233ca..e173aa9314aa72efafb2d0bcb133f3f9a6410fa6 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -221,7 +221,6 @@ void EmitAssemblyHelper::CreatePasses(TargetMachine *TM) {
   PMBuilder.OptLevel = OptLevel;
   PMBuilder.SizeLevel = CodeGenOpts.OptimizeSize;
 
-  PMBuilder.DisableSimplifyLibCalls = !CodeGenOpts.SimplifyLibCalls;
   PMBuilder.DisableUnitAtATime = !CodeGenOpts.UnitAtATime;
   PMBuilder.DisableUnrollLoops = !CodeGenOpts.UnrollLoops;