[compiler] Introduce code stubs for abstract equality.

src/compiler/code-stub-assembler.h

 // Copyright 2015 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_CODE_STUB_ASSEMBLER_H_
 #define V8_COMPILER_CODE_STUB_ASSEMBLER_H_
 
 #include <map>
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
@@ skipping 18 matching lines @@
 
 class CallDescriptor;
 class Graph;
 class Node;
 class Operator;
 class RawMachineAssembler;
 class RawMachineLabel;
 class Schedule;
 
 #define CODE_STUB_ASSEMBLER_BINARY_OP_LIST(V) \
+  V(Float32Equal)                             \
+  V(Float32LessThan)                          \
+  V(Float32LessThanOrEqual)                   \
+  V(Float32GreaterThan)                       \
+  V(Float32GreaterThanOrEqual)                \
   V(Float64Equal)                             \
   V(Float64LessThan)                          \
   V(Float64LessThanOrEqual)                   \
   V(Float64GreaterThan)                       \
   V(Float64GreaterThanOrEqual)                \
   V(IntPtrAdd)                                \
   V(IntPtrSub)                                \
   V(Int32Add)                                 \
   V(Int32Sub)                                 \
   V(Int32Mul)                                 \
@@ skipping 85 matching lines @@
 
   // Constants.
   Node* Int32Constant(int value);
   Node* IntPtrConstant(intptr_t value);
   Node* NumberConstant(double value);
   Node* SmiConstant(Smi* value);
   Node* HeapConstant(Handle<HeapObject> object);
   Node* BooleanConstant(bool value);
   Node* ExternalConstant(ExternalReference address);
   Node* Float64Constant(double value);
+  Node* BooleanMapConstant();
   Node* HeapNumberMapConstant();
 
   Node* Parameter(int value);
   void Return(Node* value);
 
   void Bind(Label* label);
   void Goto(Label* label);
   void Branch(Node* condition, Label* true_label, Label* false_label);
 
   void Switch(Node* index, Label* default_label, int32_t* case_values,
@@ skipping 106 matching lines @@
 
   // Check a value for smi-ness
   Node* WordIsSmi(Node* a);
 
   // Load an object pointer from a buffer that isn't in the heap.
   Node* LoadBufferObject(Node* buffer, int offset);
   // Load a field from an object on the heap.
   Node* LoadObjectField(Node* object, int offset);
   // Load the floating point value of a HeapNumber.
   Node* LoadHeapNumberValue(Node* object);
+  // Load the bit field of a Map.
+  Node* LoadMapBitField(Node* map);
   // Load the instance type of a Map.
   Node* LoadMapInstanceType(Node* map);
 
   // Load an array element from a FixedArray.
   Node* LoadFixedArrayElementSmiIndex(Node* object, Node* smi_index,
                                       int additional_offset = 0);
   Node* LoadFixedArrayElementConstantIndex(Node* object, int index);
 
   // Allocate an object of the given size.
   Node* Allocate(int size, AllocationFlags flags);
 
   // Store an array element to a FixedArray.
   Node* StoreFixedArrayElementNoWriteBarrier(Node* object, Node* index,
                                              Node* value);
+  // Load the Map of an HeapObject.
+  Node* LoadMap(Node* object);
+  // Load the instance type of an HeapObject.
   Node* LoadInstanceType(Node* object);
 
   // Returns a node that is true if the given bit is set in |word32|.
   template <typename T>
   Node* BitFieldDecode(Node* word32) {
     return BitFieldDecode(word32, T::kShift, T::kMask);
   }
 
   Node* BitFieldDecode(Node* word32, uint32_t shift, uint32_t mask);
 
   // Branching helpers.
   // TODO(danno): Can we be more cleverish wrt. edge-split?
   void BranchIfInt32LessThan(Node* a, Node* b, Label* if_true, Label* if_false);
   void BranchIfSmiLessThan(Node* a, Node* b, Label* if_true, Label* if_false);
   void BranchIfSmiLessThanOrEqual(Node* a, Node* b, Label* if_true,
                                   Label* if_false);
   void BranchIfFloat64Equal(Node* a, Node* b, Label* if_true, Label* if_false);
   void BranchIfFloat64LessThan(Node* a, Node* b, Label* if_true,
                                Label* if_false);
   void BranchIfFloat64LessThanOrEqual(Node* a, Node* b, Label* if_true,
                                       Label* if_false);
   void BranchIfFloat64GreaterThan(Node* a, Node* b, Label* if_true,
                                   Label* if_false);
   void BranchIfFloat64GreaterThanOrEqual(Node* a, Node* b, Label* if_true,
                                          Label* if_false);
   void BranchIfFloat64IsNaN(Node* value, Label* if_true, Label* if_false) {
     BranchIfFloat64Equal(value, value, if_false, if_true);
   }
+  void BranchIfWord32Equal(Node* a, Node* b, Label* if_true, Label* if_false);
 
   // Helpers which delegate to RawMachineAssembler.
   Factory* factory() const;
   Isolate* isolate() const;
   Zone* zone() const;
 
  protected:
   // Protected helpers which delegate to RawMachineAssembler.
   Graph* graph() const;
 
@@ skipping 60 matching lines @@
   // Map of variables to the list of value nodes that have been added from each
   // merge path in their order of merging.
   std::map<Variable::Impl*, std::vector<Node*>> variable_merges_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_STUB_ASSEMBLER_H_