Temporarily revert this, it's causing an issue with an internal project.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99451 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Utils/InlineFunction.cpp

@@ -229,9 +229,7 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
   const Function *CalledFunc = CS.getCalledFunction();
   if (CalledFunc == 0 ||          // Can't inline external function or indirect
       CalledFunc->isDeclaration() || // call, or call to a vararg function!
-      CalledFunc->getFunctionType()->isVarArg() ||
-      CS.isNoInline())            // Call site is marked noinline.
-    return false;
+      CalledFunc->getFunctionType()->isVarArg()) return false;
 
 
   // If the call to the callee is not a tail call, we must clear the 'tail'