V8 support for cached accessors.

src/crankshaft/hydrogen.cc

Index: src/crankshaft/hydrogen.cc
diff --git a/src/crankshaft/hydrogen.cc b/src/crankshaft/hydrogen.cc
index 87995c02f6539eceb9eb9268d259550f88ddb26b..81b3fe4c079f5f268cfaace37f21773e82754af1 100644
--- a/src/crankshaft/hydrogen.cc
+++ b/src/crankshaft/hydrogen.cc
@@ -5405,6 +5405,7 @@ void HOptimizedGraphBuilder::VisitVariableProxy(VariableProxy* expr) {
       }
 
       LookupIterator it(global, variable->name(), LookupIterator::OWN);
+      it.TryLookupCacheProperty();
       if (CanInlineGlobalPropertyAccess(variable, &it, LOAD)) {
         InlineGlobalPropertyLoad(&it, expr->id());
         return;
@@ -6216,6 +6217,17 @@ HValue* HOptimizedGraphBuilder::BuildMonomorphicAccess(
   }
 
   if (info->IsAccessorConstant()) {
+    MaybeHandle<Name> maybe_name =
+        FunctionTemplateInfo::TryGetCachePropertyName(isolate(),
+                                                      info->accessor());
+    if (!maybe_name.is_null()) {
+      Handle<Name> name = maybe_name.ToHandleChecked();
+      PropertyAccessInfo cache_info(this, LOAD, info->map(), name);
+      // Load new target.
+      if (cache_info.CanAccessMonomorphic())
+        return BuildLoadNamedField(&cache_info, checked_object);
+    }
+
     Push(checked_object);
     int argument_count = 1;
     if (!info->IsLoad()) {