Allocation site support for monomorphic StringAdds in BinaryOps.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index c66001a1a226fd0174d32257b811194c01cb8c25..101df8a55ebd1c970fa8267938ad1df892b71c35 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -246,6 +246,28 @@ void BinaryOpICStub::GenerateAheadOfTime(Isolate* 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) {