Revert previous change; even this mild and clearly

more accurate change loses more than it gains on
benchmarks.

llvm-svn: 62938

llvm/lib/Transforms/Utils/InlineCost.cpp

@@ -121,12 +121,9 @@ void InlineCostAnalyzer::FunctionInfo::analyzeFunction(Function *F) {
           }
 
         // Calls often compile into many machine instructions.  Bump up their
-        // cost to reflect this.  Allow an extra instruction per parameter.
-        if (!isa<IntrinsicInst>(II)) {
-          for (CallSite::arg_iterator I = CS.arg_begin(), E = CS.arg_end();
-               I != E; ++I)
-            NumInsts ++;
-        }
+        // cost to reflect this.
+        if (!isa<IntrinsicInst>(II))
+          NumInsts += 5;
       }
       
       if (const AllocaInst *AI = dyn_cast<AllocaInst>(II)) {