[turbofan] Introduce JSCreateLowering for optimizing JSCreate nodes.

src/compiler/js-typed-lowering.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_JS_TYPED_LOWERING_H_
 #define V8_COMPILER_JS_TYPED_LOWERING_H_
 
 #include "src/base/flags.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/opcodes.h"
@@ skipping 50 matching lines @@
   Reduction ReduceJSStoreContext(Node* node);
   Reduction ReduceJSEqual(Node* node, bool invert);
   Reduction ReduceJSStrictEqual(Node* node, bool invert);
   Reduction ReduceJSToBoolean(Node* node);
   Reduction ReduceJSToNumberInput(Node* input);
   Reduction ReduceJSToNumber(Node* node);
   Reduction ReduceJSToStringInput(Node* input);
   Reduction ReduceJSToString(Node* node);
   Reduction ReduceJSToObject(Node* node);
   Reduction ReduceJSConvertReceiver(Node* node);
-  Reduction ReduceJSCreate(Node* node);
-  Reduction ReduceJSCreateArguments(Node* node);
-  Reduction ReduceJSCreateArray(Node* node);
-  Reduction ReduceJSCreateIterResultObject(Node* node);
-  Reduction ReduceJSCreateFunctionContext(Node* node);
-  Reduction ReduceJSCreateWithContext(Node* node);
-  Reduction ReduceJSCreateCatchContext(Node* node);
-  Reduction ReduceJSCreateBlockContext(Node* node);
   Reduction ReduceJSCallConstruct(Node* node);
   Reduction ReduceJSCallFunction(Node* node);
   Reduction ReduceJSForInDone(Node* node);
   Reduction ReduceJSForInNext(Node* node);
   Reduction ReduceJSForInStep(Node* node);
   Reduction ReduceSelect(Node* node);
   Reduction ReduceNumberBinop(Node* node, const Operator* numberOp);
   Reduction ReduceInt32Binop(Node* node, const Operator* intOp);
   Reduction ReduceUI32Shift(Node* node, Signedness left_signedness,
                             const Operator* shift_op);
-  Reduction ReduceNewArray(Node* node, Node* length, int capacity,
-                           Handle<AllocationSite> site);
 
   Node* Word32Shl(Node* const lhs, int32_t const rhs);
-  Node* AllocateArguments(Node* effect, Node* control, Node* frame_state);
-  Node* AllocateRestArguments(Node* effect, Node* control, Node* frame_state,
-                              int start_index);
-  Node* AllocateAliasedArguments(Node* effect, Node* control, Node* frame_state,
-                                 Node* context, Handle<SharedFunctionInfo>,
-                                 bool* has_aliased_arguments);
-  Node* AllocateElements(Node* effect, Node* control,
-                         ElementsKind elements_kind, int capacity,
-                         PretenureFlag pretenure);
 
   Factory* factory() const;
   Graph* graph() const;
   JSGraph* jsgraph() const { return jsgraph_; }
   Isolate* isolate() const;
   JSOperatorBuilder* javascript() const;
   CommonOperatorBuilder* common() const;
   SimplifiedOperatorBuilder* simplified() const;
   MachineOperatorBuilder* machine() const;
   CompilationDependencies* dependencies() const;
   Flags flags() const { return flags_; }
 
-  // Limits up to which context allocations are inlined.
-  static const int kFunctionContextAllocationLimit = 16;
-  static const int kBlockContextAllocationLimit = 16;
-
   CompilationDependencies* dependencies_;
   Flags flags_;
   JSGraph* jsgraph_;
   Type* shifted_int32_ranges_[4];
   Type* const true_type_;
   Type* const false_type_;
   Type* const the_hole_type_;
   TypeCache const& type_cache_;
 };
 
 DEFINE_OPERATORS_FOR_FLAGS(JSTypedLowering::Flags)
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_TYPED_LOWERING_H_