Disable invocation of otpimizing compiler on x64 regardless of optimization_invocation_threshold va…

runtime/vm/code_generator_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/code_generator.h"
 
 #include "lib/error.h"
 #include "vm/ast_printer.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/longjump.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/resolver.h"
 #include "vm/stub_code.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, print_ast, false, "Print abstract syntax tree.");
 DEFINE_FLAG(bool, print_scopes, false, "Print scopes of local variables.");
 DEFINE_FLAG(bool, trace_functions, false, "Trace entry of each function.");
-DEFINE_FLAG(int, optimization_invocation_threshold, -1,
+DEFINE_FLAG(int, optimization_invocation_threshold, 1000,
     "number of invocations before a function is optimized, -1 means never.");
 DECLARE_FLAG(bool, enable_type_checks);
 DECLARE_FLAG(bool, report_invocation_count);
 DECLARE_FLAG(bool, trace_compiler);
 
 #define __ assembler_->
 
 
 // TODO(regis): CodeGeneratorState, CodeGenerator::DescriptorList, and
 // CodeGenerator::HandlerList can probably be moved to code_generator.cc, since
@@ skipping 238 matching lines @@
 // Note that first 13 bytes may be patched with a jump.
 // TODO(srdjan): Add check that no object is inlined in the first
 // 13 bytes (length of a jump instruction).
 void CodeGenerator::GeneratePreEntryCode() {
   // Do not optimize if:
   // - we count invocations.
   // - optimization disabled via negative 'optimization_invocation_threshold;
   // - function is marked as non-optimizable.
   // - type checks are enabled.
   const bool may_optimize =
+      false &&   // TODO(srdjan): Remove once the optimizer is enabled on x64.
       !FLAG_report_invocation_count &&
       (FLAG_optimization_invocation_threshold >= 0) &&
       !Isolate::Current()->debugger()->IsActive() &&
       parsed_function_.function().is_optimizable();
   // Count invocation and check.
   if (FLAG_report_invocation_count || may_optimize) {
     // TODO(turnidge): It would be nice to remove this nop.  Right now
     // we need it to make sure the function is still patchable.
     __ nop(8);
     __ nop(5);
@@ skipping 2517 matching lines @@
   const Error& error = Error::Handle(
       Parser::FormatError(script, token_index, "Error", format, args));
   va_end(args);
   Isolate::Current()->long_jump_base()->Jump(1, error);
   UNREACHABLE();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64