Enable stub generation using Hydrogen/Lithium (again)

src/compiler.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 88 matching lines @@
       extension_(NULL),
       pre_parse_data_(NULL),
       context_(closure->context()),
       osr_ast_id_(BailoutId::None()),
       zone_(zone),
       deferred_handles_(NULL) {
   Initialize(BASE);
 }
 
 
+CompilationInfo::CompilationInfo(Isolate* isolate, Zone* zone)
+    : isolate_(isolate),
+      flags_(LanguageModeField::encode(CLASSIC_MODE) |
+             IsLazy::encode(true)),
+      function_(NULL),
+      scope_(NULL),
+      global_scope_(NULL),
+      extension_(NULL),
+      pre_parse_data_(NULL),
+      osr_ast_id_(BailoutId::None()),
+      zone_(zone),
+      deferred_handles_(NULL) {
+  Initialize(STUB);
+}
+
+
 CompilationInfo::~CompilationInfo() {
   delete deferred_handles_;
 }
 
 
+int CompilationInfo::num_parameters() const {
+  if (IsStub()) {
+    return 0;
+  } else {
+    return scope()->num_parameters();
+  }
+}
+
+
+int CompilationInfo::num_heap_slots() const {
+  if (IsStub()) {
+    return 0;
+  } else {
+    return scope()->num_heap_slots();
+  }
+}
+
+
+Code::Flags CompilationInfo::flags() const {
+  if (IsStub()) {
+    return Code::ComputeFlags(Code::COMPILED_STUB);
+  } else {
+    return Code::ComputeFlags(Code::OPTIMIZED_FUNCTION);
+  }
+}
+
+
 // Disable optimization for the rest of the compilation pipeline.
 void CompilationInfo::DisableOptimization() {
   bool is_optimizable_closure =
     FLAG_optimize_closures &&
     closure_.is_null() &&
     !scope_->HasTrivialOuterContext() &&
     !scope_->outer_scope_calls_non_strict_eval() &&
     !scope_->inside_with();
   SetMode(is_optimizable_closure ? BASE : NONOPT);
 }
@@ skipping 186 matching lines @@
   // optimizations.  When using the always_opt flag we disregard the
   // optimizable marker in the code object and optimize anyway. This
   // is safe as long as the unoptimized code has deoptimization
   // support.
   ASSERT(FLAG_always_opt || code->optimizable());
   ASSERT(info()->shared_info()->has_deoptimization_support());
 
   if (FLAG_trace_hydrogen) {
     PrintF("-----------------------------------------------------------\n");
     PrintF("Compiling method %s using hydrogen\n", *name->ToCString());
-    HTracer::Instance()->TraceCompilation(info()->function());
+    HTracer::Instance()->TraceCompilation(info());
   }
   Handle<Context> native_context(
       info()->closure()->context()->native_context());
   oracle_ = new(info()->zone()) TypeFeedbackOracle(
       code, native_context, info()->isolate(), info()->zone());
   graph_builder_ = new(info()->zone()) HGraphBuilder(info(), oracle_);
   HPhase phase(HPhase::kTotal);
   graph_ = graph_builder_->CreateGraph();
 
   if (info()->isolate()->has_pending_exception()) {
@@ skipping 36 matching lines @@
   }
   return SetLastStatus(SUCCEEDED);
 }
 
 
 OptimizingCompiler::Status OptimizingCompiler::GenerateAndInstallCode() {
   ASSERT(last_status() == SUCCEEDED);
   Timer timer(this, &time_taken_to_codegen_);
   ASSERT(chunk_ != NULL);
   ASSERT(graph_ != NULL);
-  Handle<Code> optimized_code = chunk_->Codegen();
+  Handle<Code> optimized_code = chunk_->Codegen(Code::OPTIMIZED_FUNCTION);
   if (optimized_code.is_null()) {
     info()->set_bailout_reason("code generation failed");
     return AbortOptimization();
   }
   info()->SetCode(optimized_code);
   RecordOptimizationStats();
   return SetLastStatus(SUCCEEDED);
 }
 
 
@@ skipping 663 matching lines @@
     }
   }
 
   GDBJIT(AddCode(Handle<String>(shared->DebugName()),
                  Handle<Script>(info->script()),
                  Handle<Code>(info->code()),
                  info));
 }
 
 } }  // namespace v8::internal