Optimize Math.sin and Math.cos by avoiding runtime calls.

src/codegen.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 405 matching lines @@
   {&CodeGenerator::GenerateIsSmi, "_IsSmi"},
   {&CodeGenerator::GenerateIsNonNegativeSmi, "_IsNonNegativeSmi"},
   {&CodeGenerator::GenerateIsArray, "_IsArray"},
   {&CodeGenerator::GenerateArgumentsLength, "_ArgumentsLength"},
   {&CodeGenerator::GenerateArgumentsAccess, "_Arguments"},
   {&CodeGenerator::GenerateValueOf, "_ValueOf"},
   {&CodeGenerator::GenerateSetValueOf, "_SetValueOf"},
   {&CodeGenerator::GenerateFastCharCodeAt, "_FastCharCodeAt"},
   {&CodeGenerator::GenerateObjectEquals, "_ObjectEquals"},
   {&CodeGenerator::GenerateLog, "_Log"},
-  {&CodeGenerator::GenerateRandomPositiveSmi, "_RandomPositiveSmi"}
+  {&CodeGenerator::GenerateRandomPositiveSmi, "_RandomPositiveSmi"},
+  {&CodeGenerator::GenerateMathSin, "_Math_sin"},
+  {&CodeGenerator::GenerateMathCos, "_Math_cos"}
 };
 
 
 CodeGenerator::InlineRuntimeLUT* CodeGenerator::FindInlineRuntimeLUT(
     Handle<String> name) {
   const int entries_count =
       sizeof(kInlineRuntimeLUT) / sizeof(InlineRuntimeLUT);
   for (int i = 0; i < entries_count; i++) {
     InlineRuntimeLUT* entry = &kInlineRuntimeLUT[i];
     if (name->IsEqualTo(CStrVector(entry->name))) {
@@ skipping 211 matching lines @@
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
     case READ_ELEMENT: GenerateReadElement(masm); break;
     case NEW_OBJECT: GenerateNewObject(masm); break;
   }
 }
 
 
 } }  // namespace v8::internal