Make --always-opt also optimize toplevel code.

test/cctest/test-parsing.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 2967 matching lines @@
       CHECK(var->is_used() || !expected);
       CHECK(var->maybe_assigned() == expected);
     }
   }
 }
 
 namespace {
 
 int* global_use_counts = NULL;
 
-void MockUseCounterCallback(v8::Isolate* isolate,
-                            v8::Isolate::UseCounterFeature feature) {
+void UseCounterCallback(v8::Isolate* isolate,
+                        v8::Isolate::UseCounterFeature feature) {
   ++global_use_counts[feature];
 }
 
 }
 
 
 TEST(UseAsmUseCount) {
   i::Isolate* isolate = CcTest::i_isolate();
   i::HandleScope scope(isolate);
   LocalContext env;
   int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
   global_use_counts = use_counts;
-  CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
+  CcTest::isolate()->SetUseCounterCallback(UseCounterCallback);
   CompileRun("\"use asm\";\n"
              "var foo = 1;\n"
              "\"use asm\";\n"  // Only the first one counts.
              "function bar() { \"use asm\"; var baz = 1; }");
-  CHECK_EQ(2, use_counts[v8::Isolate::kUseAsm]);
+  // Optimizing will double-count because the source is parsed twice.
+  CHECK_EQ(i::FLAG_always_opt ? 4 : 2, use_counts[v8::Isolate::kUseAsm]);
 }
 
 
 TEST(ErrorsArrowFunctions) {
   // Tests that parser and preparser generate the same kind of errors
   // on invalid arrow function syntax.
   const char* context_data[][2] = {
     {"", ";"},
     {"v = ", ";"},
     {"bar ? (", ") : baz;"},
@@ skipping 144 matching lines @@
 
     // Arrow has more precedence, this is the same as: foo ? bar : (baz = {})
     "foo ? bar : baz => {}",
     NULL
   };
 
   static const ParserFlag always_flags[] = {kAllowArrowFunctions};
   RunParserSyncTest(context_data, statement_data, kSuccess, NULL, 0,
                     always_flags, ARRAY_SIZE(always_flags));
 }