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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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4154 FastCloneShallowArrayStub::Mode mode = | 4154 FastCloneShallowArrayStub::Mode mode = |
4155 constant_elements_kind == FAST_DOUBLE_ELEMENTS | 4155 constant_elements_kind == FAST_DOUBLE_ELEMENTS |
4156 ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS | 4156 ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS |
4157 : FastCloneShallowArrayStub::CLONE_ELEMENTS; | 4157 : FastCloneShallowArrayStub::CLONE_ELEMENTS; |
4158 FastCloneShallowArrayStub stub(mode, length); | 4158 FastCloneShallowArrayStub stub(mode, length); |
4159 CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); | 4159 CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
4160 } | 4160 } |
4161 } | 4161 } |
4162 | 4162 |
4163 | 4163 |
4164 void LCodeGen::DoObjectLiteral(LObjectLiteral* instr) { | 4164 void LCodeGen::EmitDeepCopy(Handle<JSObject> object, |
| 4165 Register result, |
| 4166 Register source, |
| 4167 int* offset) { |
| 4168 ASSERT(!source.is(ecx)); |
| 4169 ASSERT(!result.is(ecx)); |
| 4170 |
| 4171 if (FLAG_debug_code) { |
| 4172 LoadHeapObject(ecx, object); |
| 4173 __ cmp(source, ecx); |
| 4174 __ Assert(equal, "Unexpected object literal boilerplate"); |
| 4175 } |
| 4176 |
| 4177 // Increase the offset so that subsequent objects end up right after |
| 4178 // this one. |
| 4179 int current_offset = *offset; |
| 4180 int size = object->map()->instance_size(); |
| 4181 *offset += size; |
| 4182 |
| 4183 // Copy object header. |
| 4184 ASSERT(object->properties()->length() == 0); |
| 4185 ASSERT(object->elements()->length() == 0 || |
| 4186 object->elements()->map() == isolate()->heap()->fixed_cow_array_map()); |
| 4187 int inobject_properties = object->map()->inobject_properties(); |
| 4188 int header_size = size - inobject_properties * kPointerSize; |
| 4189 for (int i = 0; i < header_size; i += kPointerSize) { |
| 4190 __ mov(ecx, FieldOperand(source, i)); |
| 4191 __ mov(FieldOperand(result, current_offset + i), ecx); |
| 4192 } |
| 4193 |
| 4194 // Copy in-object properties. |
| 4195 for (int i = 0; i < inobject_properties; i++) { |
| 4196 int total_offset = current_offset + object->GetInObjectPropertyOffset(i); |
| 4197 Handle<Object> value = Handle<Object>(object->InObjectPropertyAt(i)); |
| 4198 if (value->IsJSObject()) { |
| 4199 Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 4200 __ lea(ecx, Operand(result, *offset)); |
| 4201 __ mov(FieldOperand(result, total_offset), ecx); |
| 4202 LoadHeapObject(source, value_object); |
| 4203 EmitDeepCopy(value_object, result, source, offset); |
| 4204 } else if (value->IsHeapObject()) { |
| 4205 LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
| 4206 __ mov(FieldOperand(result, total_offset), ecx); |
| 4207 } else { |
| 4208 __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 4209 } |
| 4210 } |
| 4211 } |
| 4212 |
| 4213 |
| 4214 void LCodeGen::DoObjectLiteralFast(LObjectLiteralFast* instr) { |
| 4215 ASSERT(ToRegister(instr->context()).is(esi)); |
| 4216 int size = instr->hydrogen()->total_size(); |
| 4217 |
| 4218 // Allocate all objects that are part of the literal in one big |
| 4219 // allocation. This avoids multiple limit checks. |
| 4220 Label allocated, runtime_allocate; |
| 4221 __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 4222 __ jmp(&allocated); |
| 4223 |
| 4224 __ bind(&runtime_allocate); |
| 4225 __ push(Immediate(Smi::FromInt(size))); |
| 4226 CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 4227 |
| 4228 __ bind(&allocated); |
| 4229 int offset = 0; |
| 4230 LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
| 4231 EmitDeepCopy(instr->hydrogen()->boilerplate(), eax, ebx, &offset); |
| 4232 ASSERT_EQ(size, offset); |
| 4233 } |
| 4234 |
| 4235 |
| 4236 void LCodeGen::DoObjectLiteralGeneric(LObjectLiteralGeneric* instr) { |
4165 ASSERT(ToRegister(instr->context()).is(esi)); | 4237 ASSERT(ToRegister(instr->context()).is(esi)); |
4166 Handle<FixedArray> constant_properties = | 4238 Handle<FixedArray> constant_properties = |
4167 instr->hydrogen()->constant_properties(); | 4239 instr->hydrogen()->constant_properties(); |
4168 | 4240 |
4169 // Setup the parameters to the stub/runtime call. | 4241 // Setup the parameters to the stub/runtime call. |
4170 __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); | 4242 __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
4171 __ push(FieldOperand(eax, JSFunction::kLiteralsOffset)); | 4243 __ push(FieldOperand(eax, JSFunction::kLiteralsOffset)); |
4172 __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); | 4244 __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
4173 __ push(Immediate(constant_properties)); | 4245 __ push(Immediate(constant_properties)); |
4174 int flags = instr->hydrogen()->fast_elements() | 4246 int flags = instr->hydrogen()->fast_elements() |
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4549 this, pointers, Safepoint::kLazyDeopt); | 4621 this, pointers, Safepoint::kLazyDeopt); |
4550 __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); | 4622 __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); |
4551 } | 4623 } |
4552 | 4624 |
4553 | 4625 |
4554 #undef __ | 4626 #undef __ |
4555 | 4627 |
4556 } } // namespace v8::internal | 4628 } } // namespace v8::internal |
4557 | 4629 |
4558 #endif // V8_TARGET_ARCH_IA32 | 4630 #endif // V8_TARGET_ARCH_IA32 |
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