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| 1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/code-stub-assembler.h" | 5 #include "src/code-stub-assembler.h" |
| 6 | 6 |
| 7 namespace v8 { | 7 namespace v8 { |
| 8 namespace internal { | 8 namespace internal { |
| 9 | 9 |
| 10 typedef compiler::Node Node; | |
| 11 typedef compiler::CodeAssemblerState CodeAssemblerState; | |
| 12 typedef compiler::CodeAssemblerLabel CodeAssemblerLabel; | |
| 13 | |
| 14 class ConstructorBuiltinsAssembler : public CodeStubAssembler { | 10 class ConstructorBuiltinsAssembler : public CodeStubAssembler { |
| 15 public: | 11 public: |
| 16 explicit ConstructorBuiltinsAssembler(CodeAssemblerState* state) | 12 explicit ConstructorBuiltinsAssembler(compiler::CodeAssemblerState* state) |
| 17 : CodeStubAssembler(state) {} | 13 : CodeStubAssembler(state) {} |
| 18 | 14 |
| 19 Node* EmitFastNewClosure(Node* shared_info, Node* feedback_vector, Node* slot, | 15 Node* EmitFastNewClosure(Node* shared_info, Node* feedback_vector, Node* slot, |
| 20 Node* context); | 16 Node* context); |
| 21 Node* EmitFastNewFunctionContext(Node* closure, Node* slots, Node* context, | 17 Node* EmitFastNewFunctionContext(Node* closure, Node* slots, Node* context, |
| 22 ScopeType scope_type); | 18 ScopeType scope_type); |
| 23 static int MaximumFunctionContextSlots(); | 19 static int MaximumFunctionContextSlots(); |
| 24 | 20 |
| 25 Node* EmitFastCloneRegExp(Node* closure, Node* literal_index, Node* pattern, | 21 Node* EmitFastCloneRegExp(Node* closure, Node* literal_index, Node* pattern, |
| 26 Node* flags, Node* context); | 22 Node* flags, Node* context); |
| 27 Node* EmitFastCloneShallowArray(Node* closure, Node* literal_index, | 23 Node* EmitFastCloneShallowArray(Node* closure, Node* literal_index, |
| 28 Node* context, | 24 Node* context, Label* call_runtime, |
| 29 CodeAssemblerLabel* call_runtime, | |
| 30 AllocationSiteMode allocation_site_mode); | 25 AllocationSiteMode allocation_site_mode); |
| 31 | 26 |
| 32 // Maximum number of elements in copied array (chosen so that even an array | 27 // Maximum number of elements in copied array (chosen so that even an array |
| 33 // backed by a double backing store will fit into new-space). | 28 // backed by a double backing store will fit into new-space). |
| 34 static const int kMaximumClonedShallowArrayElements = | 29 static const int kMaximumClonedShallowArrayElements = |
| 35 JSArray::kInitialMaxFastElementArray * kPointerSize / kDoubleSize; | 30 JSArray::kInitialMaxFastElementArray * kPointerSize / kDoubleSize; |
| 36 | 31 |
| 37 void CreateFastCloneShallowArrayBuiltin( | 32 void CreateFastCloneShallowArrayBuiltin( |
| 38 AllocationSiteMode allocation_site_mode); | 33 AllocationSiteMode allocation_site_mode); |
| 39 | 34 |
| 40 // Maximum number of properties in copied objects. | 35 // Maximum number of properties in copied objects. |
| 41 static const int kMaximumClonedShallowObjectProperties = 6; | 36 static const int kMaximumClonedShallowObjectProperties = 6; |
| 42 static int FastCloneShallowObjectPropertiesCount(int literal_length); | 37 static int FastCloneShallowObjectPropertiesCount(int literal_length); |
| 43 Node* EmitFastCloneShallowObject(CodeAssemblerLabel* call_runtime, | 38 Node* EmitFastCloneShallowObject(Label* call_runtime, Node* closure, |
| 44 Node* closure, Node* literals_index, | 39 Node* literals_index, |
| 45 Node* properties_count); | 40 Node* properties_count); |
| 46 void CreateFastCloneShallowObjectBuiltin(int properties_count); | 41 void CreateFastCloneShallowObjectBuiltin(int properties_count); |
| 47 | 42 |
| 48 Node* EmitFastNewObject(Node* context, Node* target, Node* new_target); | 43 Node* EmitFastNewObject(Node* context, Node* target, Node* new_target); |
| 49 | 44 |
| 50 Node* EmitFastNewObject(Node* context, Node* target, Node* new_target, | 45 Node* EmitFastNewObject(Node* context, Node* target, Node* new_target, |
| 51 CodeAssemblerLabel* call_runtime); | 46 Label* call_runtime); |
| 52 | 47 |
| 53 private: | 48 private: |
| 54 static const int kMaximumSlots = 0x8000; | 49 static const int kMaximumSlots = 0x8000; |
| 55 static const int kSmallMaximumSlots = 10; | 50 static const int kSmallMaximumSlots = 10; |
| 56 | 51 |
| 57 Node* NonEmptyShallowClone(Node* boilerplate, Node* boilerplate_map, | 52 Node* NonEmptyShallowClone(Node* boilerplate, Node* boilerplate_map, |
| 58 Node* boilerplate_elements, Node* allocation_site, | 53 Node* boilerplate_elements, Node* allocation_site, |
| 59 Node* capacity, ElementsKind kind); | 54 Node* capacity, ElementsKind kind); |
| 60 | 55 |
| 61 // FastNewFunctionContext can only allocate closures which fit in the | 56 // FastNewFunctionContext can only allocate closures which fit in the |
| 62 // new space. | 57 // new space. |
| 63 STATIC_ASSERT(((kMaximumSlots + Context::MIN_CONTEXT_SLOTS) * kPointerSize + | 58 STATIC_ASSERT(((kMaximumSlots + Context::MIN_CONTEXT_SLOTS) * kPointerSize + |
| 64 FixedArray::kHeaderSize) < kMaxRegularHeapObjectSize); | 59 FixedArray::kHeaderSize) < kMaxRegularHeapObjectSize); |
| 65 }; | 60 }; |
| 66 | 61 |
| 67 } // namespace internal | 62 } // namespace internal |
| 68 } // namespace v8 | 63 } // namespace v8 |
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