Added full deferred loading semantic to precompiled/--noopt/eager-loading code

runtime/vm/compiler.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/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/block_scheduler.h"
@@ skipping 53 matching lines @@
 DEFINE_FLAG(bool, verify_compiler, false,
     "Enable compiler verification assertions");
 
 DECLARE_FLAG(bool, trace_failed_optimization_attempts);
 DECLARE_FLAG(bool, trace_inlining_intervals);
 DECLARE_FLAG(bool, trace_irregexp);
 DECLARE_FLAG(bool, trace_patching);
 
 
 bool Compiler::always_optimize_ = false;
+bool Compiler::allow_recompilation_ = true;
 
 
 // TODO(zerny): Factor out unoptimizing/optimizing pipelines and remove
 // separate helpers functions & `optimizing` args.
 class CompilationPipeline : public ZoneAllocated {
  public:
   static CompilationPipeline* New(Zone* zone, const Function& function);
 
   virtual void ParseFunction(ParsedFunction* parsed_function) = 0;
   virtual FlowGraph* BuildFlowGraph(
@@ skipping 881 matching lines @@
   if (optimized && FLAG_trace_inlining_intervals) {
     code.DumpInlinedIntervals();
   }
 }
 
 
 static RawError* CompileFunctionHelper(CompilationPipeline* pipeline,
                                        const Function& function,
                                        bool optimized,
                                        intptr_t osr_id) {
+  // Check that we optimize if 'Compiler::always_optimize()' is set to true,
+  // except if the function is marked as not optimizable.
+  ASSERT(!function.IsOptimizable() ||
+         !Compiler::always_optimize() || optimized);
+  ASSERT(Compiler::allow_recompilation() || !function.HasCode());
   LongJumpScope jump;
   if (setjmp(*jump.Set()) == 0) {
     Thread* const thread = Thread::Current();
     Isolate* const isolate = thread->isolate();
     StackZone stack_zone(isolate);
     Zone* const zone = stack_zone.GetZone();
     TIMERSCOPE(isolate, time_compilation);
     Timer per_compile_timer(FLAG_trace_compiler, "Compilation time");
     per_compile_timer.Start();
 
@@ skipping 349 matching lines @@
     const Object& result =
       PassiveObject::Handle(isolate->object_store()->sticky_error());
     isolate->object_store()->clear_sticky_error();
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 }  // namespace dart