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 37 matching lines @@
 #include "vm-state-inl.h"
 
 namespace v8 {
 namespace internal {
 
 
 CompilationInfo::CompilationInfo(Handle<Script> script, Zone* zone)
     : flags_(LanguageModeField::encode(CLASSIC_MODE)),
       script_(script),
       osr_ast_id_(BailoutId::None()) {
-  Initialize(zone);
+  Initialize(script->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Handle<SharedFunctionInfo> shared_info,
                                  Zone* zone)
     : flags_(LanguageModeField::encode(CLASSIC_MODE) | IsLazy::encode(true)),
       shared_info_(shared_info),
       script_(Handle<Script>(Script::cast(shared_info->script()))),
       osr_ast_id_(BailoutId::None()) {
-  Initialize(zone);
+  Initialize(script_->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Handle<JSFunction> closure, Zone* zone)
     : flags_(LanguageModeField::encode(CLASSIC_MODE) | IsLazy::encode(true)),
       closure_(closure),
       shared_info_(Handle<SharedFunctionInfo>(closure->shared())),
       script_(Handle<Script>(Script::cast(shared_info_->script()))),
       context_(closure->context()),
       osr_ast_id_(BailoutId::None()) {
-  Initialize(zone);
+  Initialize(script_->GetIsolate(), BASE, zone);
 }
 
 
-void CompilationInfo::Initialize(Zone* zone) {
-  isolate_ = script_->GetIsolate();
+CompilationInfo::CompilationInfo(HydrogenCodeStub* stub,
+                                 Isolate* isolate, Zone* zone)
+    : flags_(LanguageModeField::encode(CLASSIC_MODE) |
+             IsLazy::encode(true)),
+      osr_ast_id_(BailoutId::None()) {
+  Initialize(isolate, STUB, zone);
+  code_stub_ = stub;
+}
+
+
+void CompilationInfo::Initialize(Isolate* isolate, Mode mode, Zone* zone) {
+  isolate_ = isolate;
   function_ = NULL;
   scope_ = NULL;
   global_scope_ = NULL;
   extension_ = NULL;
   pre_parse_data_ = NULL;
   zone_ = zone;
   deferred_handles_ = NULL;
+  code_stub_ = NULL;
   prologue_offset_ = kPrologueOffsetNotSet;
-  mode_ = V8::UseCrankshaft() ? BASE : NONOPT;
+  if (mode == STUB) {
+    mode_ = STUB;
+    return;
+  }
+  mode_ = V8::UseCrankshaft() ? mode : NONOPT;
   if (script_->type()->value() == Script::TYPE_NATIVE) {
     MarkAsNative();
   }
   if (!shared_info_.is_null()) {
     ASSERT(language_mode() == CLASSIC_MODE);
     SetLanguageMode(shared_info_->language_mode());
   }
   set_bailout_reason("unknown");
 }
 
 
 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 190 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_);
+  graph_builder_ = new(info()->zone()) HOptimizedGraphBuilder(info(), oracle_);
 
   Timer t(this, &time_taken_to_create_graph_);
   graph_ = graph_builder_->CreateGraph();
 
   if (info()->isolate()->has_pending_exception()) {
     info()->SetCode(Handle<Code>::null());
     return SetLastStatus(FAILED);
   }
 
   // The function being compiled may have bailed out due to an inline
@@ skipping 32 matching lines @@
   return SetLastStatus(SUCCEEDED);
 }
 
 
 OptimizingCompiler::Status OptimizingCompiler::GenerateAndInstallCode() {
   ASSERT(last_status() == SUCCEEDED);
   {  // Scope for timer.
     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 680 matching lines @@
     }
   }
 
   GDBJIT(AddCode(Handle<String>(shared->DebugName()),
                  Handle<Script>(info->script()),
                  Handle<Code>(info->code()),
                  info));
 }
 
 } }  // namespace v8::internal