[compiler] Introduce initial StrictEqualStub.

src/compiler/code-stub-assembler.cc

 // 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.
 
 #include "src/compiler/code-stub-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 87 matching lines @@
 }
 
 Node* CodeStubAssembler::ExternalConstant(ExternalReference address) {
   return raw_assembler_->ExternalConstant(address);
 }
 
 Node* CodeStubAssembler::Float64Constant(double value) {
   return raw_assembler_->Float64Constant(value);
 }
 
+Node* CodeStubAssembler::HeapNumberMapConstant() {
+  return HeapConstant(isolate()->factory()->heap_number_map());
+}
+
 Node* CodeStubAssembler::Parameter(int value) {
   return raw_assembler_->Parameter(value);
 }
 
 
 void CodeStubAssembler::Return(Node* value) {
   return raw_assembler_->Return(value);
 }
 
 void CodeStubAssembler::Bind(CodeStubAssembler::Label* label) {
@@ skipping 14 matching lines @@
 
 Node* CodeStubAssembler::SmiShiftBitsConstant() {
   return IntPtrConstant(kSmiShiftSize + kSmiTagSize);
 }
 
 
 Node* CodeStubAssembler::SmiTag(Node* value) {
   return raw_assembler_->WordShl(value, SmiShiftBitsConstant());
 }
 
-
 Node* CodeStubAssembler::SmiUntag(Node* value) {
   return raw_assembler_->WordSar(value, SmiShiftBitsConstant());
 }
 
 Node* CodeStubAssembler::SmiToInt32(Node* value) {
   Node* result = raw_assembler_->WordSar(value, SmiShiftBitsConstant());
   if (raw_assembler_->machine()->Is64()) {
     result = raw_assembler_->TruncateInt64ToInt32(result);
   }
   return result;
 }
 
+Node* CodeStubAssembler::SmiToFloat64(Node* value) {
+  return ChangeInt32ToFloat64(SmiUntag(value));
+}
+
 Node* CodeStubAssembler::SmiAdd(Node* a, Node* b) { return IntPtrAdd(a, b); }
 
 Node* CodeStubAssembler::SmiEqual(Node* a, Node* b) { return WordEqual(a, b); }
 
 #define DEFINE_CODE_STUB_ASSEMBER_BINARY_OP(name)   \
   Node* CodeStubAssembler::name(Node* a, Node* b) { \
     return raw_assembler_->name(a, b);              \
   }
 CODE_STUB_ASSEMBLER_BINARY_OP_LIST(DEFINE_CODE_STUB_ASSEMBER_BINARY_OP)
 #undef DEFINE_CODE_STUB_ASSEMBER_BINARY_OP
@@ skipping 16 matching lines @@
   return raw_assembler_->Load(MachineType::AnyTagged(), buffer,
                               IntPtrConstant(offset));
 }
 
 Node* CodeStubAssembler::LoadObjectField(Node* object, int offset) {
   return raw_assembler_->Load(MachineType::AnyTagged(), object,
                               IntPtrConstant(offset - kHeapObjectTag));
 }
 
 Node* CodeStubAssembler::LoadHeapNumberValue(Node* object) {
-  return raw_assembler_->Load(
-      MachineType::Float64(), object,
-      IntPtrConstant(HeapNumber::kValueOffset - kHeapObjectTag));
+  return Load(MachineType::Float64(), object,
+              IntPtrConstant(HeapNumber::kValueOffset - kHeapObjectTag));
+}
+
+Node* CodeStubAssembler::LoadMapInstanceType(Node* map) {
+  return Load(MachineType::Uint8(), map,
+              IntPtrConstant(Map::kInstanceTypeOffset - kHeapObjectTag));
 }
 
 Node* CodeStubAssembler::LoadFixedArrayElementSmiIndex(Node* object,
                                                        Node* smi_index,
                                                        int additional_offset) {
   int const kSmiShiftBits = kSmiShiftSize + kSmiTagSize;
   Node* header_size = IntPtrConstant(additional_offset +
                                      FixedArray::kHeaderSize - kHeapObjectTag);
   Node* scaled_index =
       (kSmiShiftBits > kPointerSizeLog2)
@@ skipping 68 matching lines @@
                                              Node* base, Node* index,
                                              Node* value) {
   return raw_assembler_->Store(rep, base, index, value, kNoWriteBarrier);
 }
 
 Node* CodeStubAssembler::Projection(int index, Node* value) {
   return raw_assembler_->Projection(index, value);
 }
 
 Node* CodeStubAssembler::LoadInstanceType(Node* object) {
-  return raw_assembler_->Word32And(
-      LoadObjectField(LoadObjectField(object, HeapObject::kMapOffset),
-                      Map::kInstanceTypeOffset),
-      raw_assembler_->Int32Constant(255));
+  return LoadMapInstanceType(LoadObjectField(object, HeapObject::kMapOffset));
 }
 
 Node* CodeStubAssembler::BitFieldDecode(Node* word32, uint32_t shift,
                                         uint32_t mask) {
   return raw_assembler_->Word32Shr(
       raw_assembler_->Word32And(word32, raw_assembler_->Int32Constant(mask)),
       raw_assembler_->Int32Constant(shift));
 }
 
+void CodeStubAssembler::BranchIfFloat64Equal(Node* a, Node* b, Label* if_true,
+                                             Label* if_false) {
+  Label if_equal(this), if_notequal(this);
+  Branch(Float64Equal(a, b), &if_equal, &if_notequal);
+  Bind(&if_equal);
+  Goto(if_true);
+  Bind(&if_notequal);
+  Goto(if_false);
+}
+
 Node* CodeStubAssembler::CallN(CallDescriptor* descriptor, Node* code_target,
                                Node** args) {
   CallPrologue();
   Node* return_value = raw_assembler_->CallN(descriptor, code_target, args);
   CallEpilogue();
   return return_value;
 }
 
 
 Node* CodeStubAssembler::TailCallN(CallDescriptor* descriptor,
@@ skipping 156 matching lines @@
   args[0] = arg1;
   args[1] = arg2;
   args[2] = arg3;
   args[3] = arg4;
   args[4] = arg5;
   args[5] = context;
 
   return CallN(call_descriptor, target, args);
 }
 
-Node* CodeStubAssembler::TailCallStub(CodeStub& stub, Node** args) {
-  Node* code_target = HeapConstant(stub.GetCode());
-  CallDescriptor* descriptor = Linkage::GetStubCallDescriptor(
-      isolate(), zone(), stub.GetCallInterfaceDescriptor(),
-      stub.GetStackParameterCount(), CallDescriptor::kSupportsTailCalls);
-  return raw_assembler_->TailCallN(descriptor, code_target, args);
+Node* CodeStubAssembler::TailCallStub(const CallInterfaceDescriptor& descriptor,
+                                      Node* target, Node* context, Node* arg1,
+                                      Node* arg2, size_t result_size) {
+  CallDescriptor* call_descriptor = Linkage::GetStubCallDescriptor(
+      isolate(), zone(), descriptor, descriptor.GetStackParameterCount(),
+      CallDescriptor::kSupportsTailCalls, Operator::kNoProperties,
+      MachineType::AnyTagged(), result_size);
+
+  Node** args = zone()->NewArray<Node*>(3);
+  args[0] = arg1;
+  args[1] = arg2;
+  args[2] = context;
+
+  return raw_assembler_->TailCallN(call_descriptor, target, args);
 }
 
 Node* CodeStubAssembler::TailCall(
     const CallInterfaceDescriptor& interface_descriptor, Node* code_target,
     Node** args, size_t result_size) {
   CallDescriptor* descriptor = Linkage::GetStubCallDescriptor(
       isolate(), zone(), interface_descriptor,
       interface_descriptor.GetStackParameterCount(),
       CallDescriptor::kSupportsTailCalls, Operator::kNoProperties,
       MachineType::AnyTagged(), result_size);
@@ skipping 23 matching lines @@
   for (size_t i = 0; i < case_count; ++i) {
     labels[i] = case_labels[i]->label_;
     case_labels[i]->MergeVariables();
     default_label->MergeVariables();
   }
   return raw_assembler_->Switch(index, default_label->label_, case_values,
                                 labels, case_count);
 }
 
 // RawMachineAssembler delegate helpers:
-Isolate* CodeStubAssembler::isolate() { return raw_assembler_->isolate(); }
+Isolate* CodeStubAssembler::isolate() const {
+  return raw_assembler_->isolate();
+}
 
-Graph* CodeStubAssembler::graph() { return raw_assembler_->graph(); }
+Factory* CodeStubAssembler::factory() const { return isolate()->factory(); }
 
-Zone* CodeStubAssembler::zone() { return raw_assembler_->zone(); }
+Graph* CodeStubAssembler::graph() const { return raw_assembler_->graph(); }
+
+Zone* CodeStubAssembler::zone() const { return raw_assembler_->zone(); }
 
 // The core implementation of Variable is stored through an indirection so
 // that it can outlive the often block-scoped Variable declarations. This is
 // needed to ensure that variable binding and merging through phis can
 // properly be verified.
 class CodeStubAssembler::Variable::Impl : public ZoneObject {
  public:
   explicit Impl(MachineRepresentation rep) : value_(nullptr), rep_(rep) {}
   Node* value_;
   MachineRepresentation rep_;
@@ skipping 138 matching lines @@
       }
     }
   }
 
   bound_ = true;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8