Encapsulate megamorphic load/tail-call in hydrogen

src/code-stubs.cc

 // Copyright 2012 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/v8.h"
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/cpu-profiler.h"
 #include "src/factory.h"
@@ skipping 567 matching lines @@
 
 
 void VectorKeyedLoadStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   InitializeVectorLoadStub(
       isolate(), descriptor, MajorKey(),
       FUNCTION_ADDR(VectorKeyedLoadIC_MissFromStubFailure));
 }
 
 
+void MegamorphicLoadStub::InitializeInterfaceDescriptor(
+    CodeStubInterfaceDescriptor* descriptor) {
+  LoadDescriptor call_descriptor(isolate());
+  descriptor->Initialize(MajorKey(), call_descriptor);
+}
+
+
 void FastNewClosureStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   FastNewClosureDescriptor call_descriptor(isolate());
   descriptor->Initialize(
       MajorKey(), call_descriptor,
       Runtime::FunctionForId(Runtime::kNewClosureFromStubFailure)->entry);
 }
 
 
 void FastNewContextStub::InitializeInterfaceDescriptor(
@@ skipping 410 matching lines @@
 
 
 // static
 void KeyedLoadGenericStub::InstallDescriptors(Isolate* isolate) {
   KeyedLoadGenericStub stub(isolate);
   InstallDescriptor(isolate, &stub);
 }
 
 
 // static
+void MegamorphicLoadStub::InstallDescriptors(Isolate* isolate) {
+  MegamorphicLoadStub stub(isolate, LoadIC::State(CONTEXTUAL));
+  InstallDescriptor(isolate, &stub);
+}
+
+
+// static
 void StoreFieldStub::InstallDescriptors(Isolate* isolate) {
   StoreFieldStub stub(isolate, FieldIndex::ForInObjectOffset(0),
                       Representation::None());
   InstallDescriptor(isolate, &stub);
 }
 
 
 // static
 void LoadFastElementStub::InstallDescriptors(Isolate* isolate) {
   LoadFastElementStub stub(isolate, true, FAST_ELEMENTS);
@@ skipping 33 matching lines @@
   InstallDescriptor(isolate, &stub3);
 }
 
 InternalArrayConstructorStub::InternalArrayConstructorStub(
     Isolate* isolate) : PlatformCodeStub(isolate) {
   InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
 }
 
 
 } }  // namespace v8::internal