Added fast compiler support for calling JS runtime functions....

src/compiler.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 975 matching lines @@
   ZoneList<Expression*>* args = expr->arguments();
   // Check all arguments to the call
   for (int i = 0; i < args->length(); i++) {
     ProcessExpression(args->at(i), Expression::kValue);
     CHECK_BAILOUT;
   }
 }
 
 
 void CodeGenSelector::VisitCallRuntime(CallRuntime* expr) {
-  // In case of JS runtime function bail out.
-  if (expr->function() == NULL) BAILOUT("call JS runtime function");
   // Check for inline runtime call
   if (expr->name()->Get(0) == '_' &&
       CodeGenerator::FindInlineRuntimeLUT(expr->name()) != NULL) {
     BAILOUT("inlined runtime call");
   }
   // Check all arguments to the call.  (Relies on TEMP meaning STACK.)
   for (int i = 0; i < expr->arguments()->length(); i++) {
     ProcessExpression(expr->arguments()->at(i), Expression::kValue);
     CHECK_BAILOUT;
   }
@@ skipping 109 matching lines @@
 
 void CodeGenSelector::VisitThisFunction(ThisFunction* expr) {
   BAILOUT("ThisFunction");
 }
 
 #undef BAILOUT
 #undef CHECK_BAILOUT
 
 
 } }  // namespace v8::internal