[turbofan] Add fast path for cached property names.

test/cctest/test-api-accessors.cc

Index: test/cctest/test-api-accessors.cc
diff --git a/test/cctest/test-api-accessors.cc b/test/cctest/test-api-accessors.cc
index cc0c7efb5ff2985106e5f7462f8c4259a1825b06..921f54d466a53d610f28c9d27282dc2e3b970549 100644
--- a/test/cctest/test-api-accessors.cc
+++ b/test/cctest/test-api-accessors.cc
@@ -249,6 +249,89 @@ TEST(CachedAccessorCrankshaft) {
   ExpectInt32("g()", 789);
 }
 
+TEST(CachedAccessorOnGlobalObject) {
+  i::FLAG_allow_natives_syntax = true;
+  LocalContext env;
+  v8::Isolate* isolate = env->GetIsolate();
+  v8::HandleScope scope(isolate);
+
+  v8::Local<v8::FunctionTemplate> templ =
+      v8::FunctionTemplate::New(CcTest::isolate());
+  v8::Local<v8::ObjectTemplate> object_template = templ->InstanceTemplate();
+  v8::Local<v8::Private> priv =
+      v8::Private::ForApi(isolate, v8_str("Foo#draft"));
+
+  object_template->SetAccessorProperty(
+      v8_str("draft"),
+      v8::FunctionTemplate::NewWithCache(isolate, UnreachableCallback, priv,
+                                         v8::Local<v8::Value>()));
+
+  v8::Local<v8::Context> ctx =
+      v8::Context::New(CcTest::isolate(), nullptr, object_template);
+  v8::Local<v8::Object> obj = ctx->Global();
+
+  // Install the private property on the instance.
+  CHECK(obj->SetPrivate(isolate->GetCurrentContext(), priv,
+                        v8::Undefined(isolate))
+            .FromJust());
+
+  {
+    v8::Context::Scope context_scope(ctx);
+
+    // Access surrogate accessor.
+    ExpectUndefined("draft");
+
+    // Set hidden property.
+    CHECK(obj->SetPrivate(env.local(), priv, v8::Integer::New(isolate, 123))
+              .FromJust());
+
+    // Test ICs.
+    CompileRun(
+        "function f() {"
+        "  var x;"
+        "  for (var i = 0; i < 100; i++) {"
+        "    x = draft;"
+        "  }"
+        "  return x;"
+        "}");
+
+    ExpectInt32("f()", 123);
+
+    // Reset hidden property.
+    CHECK(obj->SetPrivate(env.local(), priv, v8::Integer::New(isolate, 456))
+              .FromJust());
+
+    // Test Crankshaft.
+    CompileRun("%OptimizeFunctionOnNextCall(f);");
+
+    ExpectInt32("f()", 456);
+
+    CHECK(obj->SetPrivate(env.local(), priv, v8::Integer::New(isolate, 456))
+              .FromJust());
+    // Test non-global ICs.
+    CompileRun(
+        "var x = this;"
+        "function g() {"
+        "  var r = 0;"
+        "  for (var i = 0; i < 100; i++) {"
+        "    r = x.draft;"
+        "  }"
+        "  return r;"
+        "}");
+
+    ExpectInt32("g()", 456);
+
+    // Reset hidden property.
+    CHECK(obj->SetPrivate(env.local(), priv, v8::Integer::New(isolate, 789))
+              .FromJust());
+
+    // Test non-global access in Crankshaft.
+    CompileRun("%OptimizeFunctionOnNextCall(g);");
+
+    ExpectInt32("g()", 789);
+  }
+}
+
 namespace {
 
 static void Setter(v8::Local<v8::String> name, v8::Local<v8::Value> value,