New class for Date objects: caches individual date components.

src/ia32/lithium-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 1261 matching lines @@
 
   // If the object is not a value type, return the object.
   __ CmpObjectType(input, JS_VALUE_TYPE, map);
   __ j(not_equal, &done, Label::kNear);
   __ mov(result, FieldOperand(input, JSValue::kValueOffset));
 
   __ bind(&done);
 }
 
 
+void LCodeGen::DoDateField(LDateField* instr) {
+  Register input = ToRegister(instr->InputAt(0));
+  Register result = ToRegister(instr->result());
+  Register map = ToRegister(instr->TempAt(0));
+  ASSERT(input.is(result));
+  Label done;
+  // If the object is a smi return the object.
+  __ JumpIfSmi(input, &done, Label::kNear);

[ulan, 2012/01/25 13:08:48]

See comments in full-codegen-ia32.cc

[rossberg, 2012/01/25 15:48:37]

Done.

+
+  // If the object is not a value type, return the object.
+  __ CmpObjectType(input, JS_DATE_TYPE, map);
+  __ j(not_equal, &done, Label::kNear);
+  __ mov(result,
+      FieldOperand(input, JSDate::kYearOffset + kPointerSize * instr->index()));
+
+  __ bind(&done);
+}
+
+
 void LCodeGen::DoBitNotI(LBitNotI* instr) {
   LOperand* input = instr->InputAt(0);
   ASSERT(input->Equals(instr->result()));
   __ not_(ToRegister(input));
 }
 
 
 void LCodeGen::DoThrow(LThrow* instr) {
   __ push(ToOperand(instr->value()));
   ASSERT(ToRegister(instr->context()).is(esi));
@@ skipping 3389 matching lines @@
       this, pointers, Safepoint::kLazyDeopt);
   __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32