Restrict GeneratePreagedPrologue to proper functions.

test/cctest/test-api-accessors.cc

 // Copyright 2015 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 "test/cctest/cctest.h"
 
 #include "include/v8.h"
 #include "include/v8-experimental.h"
 
 
@@ skipping 10 matching lines @@
 
 
 v8::experimental::FastAccessorBuilder* FastAccessor(v8::Isolate* isolate) {
   auto builder = v8::experimental::FastAccessorBuilder::New(isolate);
   builder->ReturnValue(builder->IntegerConstant(41));
   return builder;
 }
 
 
 TEST(FastAccessors) {
-  if (i::FLAG_always_opt || i::FLAG_optimize_for_size) return;
+  if (i::FLAG_always_opt) return;
 
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope scope(isolate);
   LocalContext env;
 
   // We emulate Embedder-created DOM Node instances. Specifically:
   // - 'parent': FunctionTemplate ~= DOM Node superclass
   // - 'child':  FunctionTemplate ~= a specific DOM node type, like a <div />
   //
   // We'll install both a C++-based and a JS-based accessor on the parent,
@@ skipping 64 matching lines @@
       "var g = Object.getOwnPropertyDescriptor("
       "    n.__proto__.__proto__, 'firstChildRaw')['get'];"
       "try {"
       "  var f = { firstChildRaw: '51' };"
       "  g.apply(f);"
       "} catch(e) {"
       "  31415;"
       "}",
       31415);
 }