Implement Math.sin, cos and tan using table lookup and spline interpolation.

src/ia32/full-codegen-ia32.cc

 // Copyright 2012 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 3676 matching lines @@
 
   VisitForStackValue(args->at(0));
   VisitForStackValue(args->at(1));
 
   StringCompareStub stub;
   __ CallStub(&stub);
   context()->Plug(eax);
 }
 
 
-void FullCodeGenerator::EmitMathSin(CallRuntime* expr) {
+void FullCodeGenerator::EmitMathLog(CallRuntime* expr) {
   // Load the argument on the stack and call the stub.
-  TranscendentalCacheStub stub(TranscendentalCache::SIN,
+  TranscendentalCacheStub stub(TranscendentalCache::LOG,
                                TranscendentalCacheStub::TAGGED);
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() == 1);
-  VisitForStackValue(args->at(0));
-  __ CallStub(&stub);
-  context()->Plug(eax);
-}
-
-
-void FullCodeGenerator::EmitMathCos(CallRuntime* expr) {
-  // Load the argument on the stack and call the stub.
-  TranscendentalCacheStub stub(TranscendentalCache::COS,
-                               TranscendentalCacheStub::TAGGED);
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT(args->length() == 1);
-  VisitForStackValue(args->at(0));
-  __ CallStub(&stub);
-  context()->Plug(eax);
-}
-
-
-void FullCodeGenerator::EmitMathTan(CallRuntime* expr) {
-  // Load the argument on the stack and call the stub.
-  TranscendentalCacheStub stub(TranscendentalCache::TAN,
-                               TranscendentalCacheStub::TAGGED);
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT(args->length() == 1);
   VisitForStackValue(args->at(0));
   __ CallStub(&stub);
   context()->Plug(eax);
 }
 
 
-void FullCodeGenerator::EmitMathLog(CallRuntime* expr) {
-  // Load the argument on the stack and call the stub.
-  TranscendentalCacheStub stub(TranscendentalCache::LOG,
-                               TranscendentalCacheStub::TAGGED);
-  ZoneList<Expression*>* args = expr->arguments();
-  ASSERT(args->length() == 1);
-  VisitForStackValue(args->at(0));
-  __ CallStub(&stub);
-  context()->Plug(eax);
-}
-
-
 void FullCodeGenerator::EmitMathSqrt(CallRuntime* expr) {
   // Load the argument on the stack and call the runtime function.
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() == 1);
   VisitForStackValue(args->at(0));
   __ CallRuntime(Runtime::kMath_sqrt, 1);
   context()->Plug(eax);
 }
 
+
+void FullCodeGenerator::EmitMathFloor(CallRuntime* expr) {
+  // Load the argument on the stack and call the runtime function.
+  ZoneList<Expression*>* args = expr->arguments();
+  ASSERT(args->length() == 1);
+  VisitForStackValue(args->at(0));
+  __ CallRuntime(Runtime::kMath_floor, 1);
+  context()->Plug(eax);
+}
+
 
 void FullCodeGenerator::EmitCallFunction(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() >= 2);
 
   int arg_count = args->length() - 2;  // 2 ~ receiver and function.
   for (int i = 0; i < arg_count + 1; ++i) {
     VisitForStackValue(args->at(i));
   }
   VisitForAccumulatorValue(args->last());  // Function.
@@ skipping 1193 matching lines @@
 
   ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
             Assembler::target_address_at(call_target_address));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32