New class for Date objects: caches individual date components.

src/hydrogen.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 6546 matching lines @@
 
 void HGraphBuilder::GenerateValueOf(CallRuntime* call) {
   ASSERT(call->arguments()->length() == 1);
   CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
   HValue* value = Pop();
   HValueOf* result = new(zone()) HValueOf(value);
   return ast_context()->ReturnInstruction(result, call->id());
 }
 
 
+void HGraphBuilder::GenerateDateField(CallRuntime* call) {
+  ASSERT(call->arguments()->length() == 2);
+  ASSERT_NE(NULL, call->arguments()->at(1)->AsLiteral());
+  int index =
+      Smi::cast(*(call->arguments()->at(1)->AsLiteral()->handle()))->value();
+  CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
+  HValue* value = Pop();
+  HDateField* result = new(zone()) HDateField(value, index);
+  return ast_context()->ReturnInstruction(result, call->id());
+}
+
+
 void HGraphBuilder::GenerateSetValueOf(CallRuntime* call) {
   ASSERT(call->arguments()->length() == 2);
   CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
   CHECK_ALIVE(VisitForValue(call->arguments()->at(1)));
   HValue* value = Pop();
   HValue* object = Pop();
   // Check if object is a not a smi.
   HIsSmiAndBranch* smicheck = new(zone()) HIsSmiAndBranch(object);
   HBasicBlock* if_smi = graph()->CreateBasicBlock();
   HBasicBlock* if_heap_object = graph()->CreateBasicBlock();
@@ skipping 22 matching lines @@
                                       value,
                                       true,  // in-object store.
                                       JSValue::kValueOffset));
   if_js_value->Goto(join);
   join->SetJoinId(call->id());
   set_current_block(join);
   return ast_context()->ReturnValue(value);
 }
 
 
+void HGraphBuilder::GenerateSetDateField(CallRuntime* call) {
+  ASSERT(call->arguments()->length() == 3);
+  ASSERT_NE(NULL, call->arguments()->at(1)->AsLiteral());
+  int index =
+      Smi::cast(*(call->arguments()->at(1)->AsLiteral()->handle()))->value();
+  CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
+  CHECK_ALIVE(VisitForValue(call->arguments()->at(2)));
+  HValue* value = Pop();
+  HValue* object = Pop();
+  // Check if object is a not a smi.
+  HIsSmiAndBranch* smicheck = new(zone()) HIsSmiAndBranch(object);
+  HBasicBlock* if_smi = graph()->CreateBasicBlock();
+  HBasicBlock* if_heap_object = graph()->CreateBasicBlock();
+  HBasicBlock* join = graph()->CreateBasicBlock();
+  smicheck->SetSuccessorAt(0, if_smi);
+  smicheck->SetSuccessorAt(1, if_heap_object);
+  current_block()->Finish(smicheck);
+  if_smi->Goto(join);
+
+  // Check if object is a JSDate.
+  set_current_block(if_heap_object);
+  HHasInstanceTypeAndBranch* typecheck =
+      new(zone()) HHasInstanceTypeAndBranch(object, JS_DATE_TYPE);
+  HBasicBlock* if_js_date = graph()->CreateBasicBlock();
+  HBasicBlock* not_js_date = graph()->CreateBasicBlock();
+  typecheck->SetSuccessorAt(0, if_js_date);
+  typecheck->SetSuccessorAt(1, not_js_date);
+  current_block()->Finish(typecheck);
+  not_js_date->Goto(join);
+
+  // Create in-object property store to right offset.
+  set_current_block(if_js_date);
+  Handle<String> name = isolate()->factory()->undefined_symbol();
+  AddInstruction(
+      new HStoreNamedField(object,
+                           name,
+                           value,
+                           true,  // in-object store.
+                           JSDate::kYearOffset + kPointerSize * index));
+  if_js_date->Goto(join);
+  join->SetJoinId(call->id());
+  set_current_block(join);
+  return ast_context()->ReturnValue(value);
+}
+
+
 // Fast support for charCodeAt(n).
 void HGraphBuilder::GenerateStringCharCodeAt(CallRuntime* call) {
   ASSERT(call->arguments()->length() == 2);
   CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
   CHECK_ALIVE(VisitForValue(call->arguments()->at(1)));
   HValue* index = Pop();
   HValue* string = Pop();
   HValue* context = environment()->LookupContext();
   HStringCharCodeAt* result = BuildStringCharCodeAt(context, string, index);
   return ast_context()->ReturnInstruction(result, call->id());
@@ skipping 831 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal