Reland "Allocation site support for monomorphic StringAdds in BinaryOps".

src/code-stubs.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 229 matching lines @@
 
 
 // static
 void BinaryOpICStub::GenerateAheadOfTime(Isolate* isolate,
                                          const BinaryOpIC::State& state) {
   BinaryOpICStub stub(state);
   stub.GetCode(isolate);
 }
 
 
+// static
+void BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(Isolate* isolate) {
+  // Generate special versions of the stub.
+  BinaryOpIC::State::GenerateAheadOfTime(isolate, &GenerateAheadOfTime);
+}
+
+
+void BinaryOpICWithAllocationSiteStub::PrintState(StringStream* stream) {
+  state_.Print(stream);
+}
+
+
+// static
+void BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(
+    Isolate* isolate, const BinaryOpIC::State& state) {
+  if (state.CouldCreateAllocationMementos()) {
+    BinaryOpICWithAllocationSiteStub stub(state);
+    stub.GetCode(isolate);
+  }
+}
+
+
 void NewStringAddStub::PrintBaseName(StringStream* stream) {
   stream->Add("NewStringAddStub");
   if ((flags() & STRING_ADD_CHECK_BOTH) == STRING_ADD_CHECK_BOTH) {
     stream->Add("_CheckBoth");
   } else if ((flags() & STRING_ADD_CHECK_LEFT) == STRING_ADD_CHECK_LEFT) {
     stream->Add("_CheckLeft");
   } else if ((flags() & STRING_ADD_CHECK_RIGHT) == STRING_ADD_CHECK_RIGHT) {
     stream->Add("_CheckRight");
   }
   if (pretenure_flag() == TENURED) {
@@ skipping 525 matching lines @@
   InstallDescriptor(isolate, &stub3);
 }
 
 InternalArrayConstructorStub::InternalArrayConstructorStub(
     Isolate* isolate) {
   InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
 }
 
 
 } }  // namespace v8::internal