--no-lazy flag applies also to top-level scripts

src/compiler.cc

 // Copyright 2012 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 "src/v8.h"
 
 #include "src/compiler.h"
 
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 992 matching lines @@
 
   info->MarkAsToplevel();
 
   Handle<SharedFunctionInfo> result;
 
   { VMState<COMPILER> state(info->isolate());
     if (info->function() == NULL) {
       // Parse the script if needed (if it's already parsed, function() is
       // non-NULL).
       bool parse_allow_lazy =
-          (info->compile_options() == ScriptCompiler::kConsumeParserCache ||
-           String::cast(script->source())->length() >
-               FLAG_min_preparse_length) &&
-          !Compiler::DebuggerWantsEagerCompilation(info);
+          (FLAG_lazy &&
+           (info->compile_options() == ScriptCompiler::kConsumeParserCache ||
+            String::cast(script->source())->length() >
+                FLAG_min_preparse_length) &&
+           !Compiler::DebuggerWantsEagerCompilation(info));
 
       if (!parse_allow_lazy &&
           (info->compile_options() == ScriptCompiler::kProduceParserCache ||
            info->compile_options() == ScriptCompiler::kConsumeParserCache)) {
         // We are going to parse eagerly, but we either 1) have cached data
         // produced by lazy parsing or 2) are asked to generate cached data.
         // Eager parsing cannot benefit from cached data, and producing cached
         // data while parsing eagerly is not implemented.
         info->SetCachedData(NULL, ScriptCompiler::kNoCompileOptions);
       }
@@ skipping 411 matching lines @@
   AllowHandleDereference allow_deref;
   bool tracing_on = info()->IsStub()
       ? FLAG_trace_hydrogen_stubs
       : (FLAG_trace_hydrogen &&
          info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
   return (tracing_on &&
       base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
 } }  // namespace v8::internal