Revert 13105: "Enable stub generation using Hydrogen/Lithium."

src/code-stubs.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 30 matching lines @@
   UnseededNumberDictionary* stubs = isolate->heap()->code_stubs();
   int index = stubs->FindEntry(GetKey());
   if (index != UnseededNumberDictionary::kNotFound) {
     *code_out = Code::cast(stubs->ValueAt(index));
     return true;
   }
   return false;
 }
 
 
+void CodeStub::GenerateCode(MacroAssembler* masm) {
+  // Update the static counter each time a new code stub is generated.
+  masm->isolate()->counters()->code_stubs()->Increment();
+
+  // Nested stubs are not allowed for leaves.
+  AllowStubCallsScope allow_scope(masm, false);
+
+  // Generate the code for the stub.
+  masm->set_generating_stub(true);
+  NoCurrentFrameScope scope(masm);
+  Generate(masm);
+}
+
+
 SmartArrayPointer<const char> CodeStub::GetName() {
   char buffer[100];
   NoAllocationStringAllocator allocator(buffer,
                                         static_cast<unsigned>(sizeof(buffer)));
   StringStream stream(&allocator);
   PrintName(&stream);
   return stream.ToCString();
 }
 
 
-void CodeStub::RecordCodeGeneration(Code* code, Isolate* isolate) {
+void CodeStub::RecordCodeGeneration(Code* code, MacroAssembler* masm) {
+  Isolate* isolate = masm->isolate();
   SmartArrayPointer<const char> name = GetName();
   PROFILE(isolate, CodeCreateEvent(Logger::STUB_TAG, code, *name));
   GDBJIT(AddCode(GDBJITInterface::STUB, *name, code));
   Counters* counters = isolate->counters();
   counters->total_stubs_code_size()->Increment(code->instruction_size());
 }
 
 
 int CodeStub::GetCodeKind() {
   return Code::STUB;
 }
 
 
-Handle<Code> PlatformCodeStub::GenerateCode() {
-  Isolate* isolate = Isolate::Current();
-  Factory* factory = isolate->factory();
-
-  // Generate the new code.
-  MacroAssembler masm(isolate, NULL, 256);
-
-  {
-    // Update the static counter each time a new code stub is generated.
-    isolate->counters()->code_stubs()->Increment();
-
-    // Nested stubs are not allowed for leaves.
-    AllowStubCallsScope allow_scope(&masm, false);
-
-    // Generate the code for the stub.
-    masm.set_generating_stub(true);
-    NoCurrentFrameScope scope(&masm);
-    Generate(&masm);
-  }
-
-  // Create the code object.
-  CodeDesc desc;
-  masm.GetCode(&desc);
-
-  // Copy the generated code into a heap object.
-  Code::Flags flags = Code::ComputeFlags(
-      static_cast<Code::Kind>(GetCodeKind()), GetICState());
-  Handle<Code> new_object = factory->NewCode(
-      desc, flags, masm.CodeObject(), NeedsImmovableCode());
-  return new_object;
-}
-
-
 Handle<Code> CodeStub::GetCode() {
   Isolate* isolate = Isolate::Current();
   Factory* factory = isolate->factory();
   Heap* heap = isolate->heap();
   Code* code;
   if (UseSpecialCache()
       ? FindCodeInSpecialCache(&code, isolate)
       : FindCodeInCache(&code, isolate)) {
     ASSERT(IsPregenerated() == code->is_pregenerated());
     return Handle<Code>(code);
   }
 
   {
     HandleScope scope(isolate);
 
-    Handle<Code> new_object = GenerateCode();
+    // Generate the new code.
+    MacroAssembler masm(isolate, NULL, 256);
+    GenerateCode(&masm);
+
+    // Create the code object.
+    CodeDesc desc;
+    masm.GetCode(&desc);
+
+    // Copy the generated code into a heap object.
+    Code::Flags flags = Code::ComputeFlags(
+        static_cast<Code::Kind>(GetCodeKind()),
+        GetICState());
+    Handle<Code> new_object = factory->NewCode(
+        desc, flags, masm.CodeObject(), NeedsImmovableCode());
     new_object->set_major_key(MajorKey());
     FinishCode(new_object);
-    RecordCodeGeneration(*new_object, isolate);
+    RecordCodeGeneration(*new_object, &masm);
 
 #ifdef ENABLE_DISASSEMBLER
     if (FLAG_print_code_stubs) {
       new_object->Disassemble(*GetName());
       PrintF("\n");
     }
 #endif
 
     if (UseSpecialCache()) {
       AddToSpecialCache(new_object);
@@ skipping 277 matching lines @@
 
 
 void JSEntryStub::FinishCode(Handle<Code> code) {
   Handle<FixedArray> handler_table =
       code->GetIsolate()->factory()->NewFixedArray(1, TENURED);
   handler_table->set(0, Smi::FromInt(handler_offset_));
   code->set_handler_table(*handler_table);
 }
 
 
-void KeyedLoadDictionaryElementStub::Generate(MacroAssembler* masm) {
-  KeyedLoadStubCompiler::GenerateLoadDictionaryElement(masm);
+void KeyedLoadElementStub::Generate(MacroAssembler* masm) {
+  switch (elements_kind_) {
+    case FAST_ELEMENTS:
+    case FAST_HOLEY_ELEMENTS:
+    case FAST_SMI_ELEMENTS:
+    case FAST_HOLEY_SMI_ELEMENTS:
+      KeyedLoadStubCompiler::GenerateLoadFastElement(masm);
+      break;
+    case FAST_DOUBLE_ELEMENTS:
+    case FAST_HOLEY_DOUBLE_ELEMENTS:
+      KeyedLoadStubCompiler::GenerateLoadFastDoubleElement(masm);
+      break;
+    case EXTERNAL_BYTE_ELEMENTS:
+    case EXTERNAL_UNSIGNED_BYTE_ELEMENTS:
+    case EXTERNAL_SHORT_ELEMENTS:
+    case EXTERNAL_UNSIGNED_SHORT_ELEMENTS:
+    case EXTERNAL_INT_ELEMENTS:
+    case EXTERNAL_UNSIGNED_INT_ELEMENTS:
+    case EXTERNAL_FLOAT_ELEMENTS:
+    case EXTERNAL_DOUBLE_ELEMENTS:
+    case EXTERNAL_PIXEL_ELEMENTS:
+      KeyedLoadStubCompiler::GenerateLoadExternalArray(masm, elements_kind_);
+      break;
+    case DICTIONARY_ELEMENTS:
+      KeyedLoadStubCompiler::GenerateLoadDictionaryElement(masm);
+      break;
+    case NON_STRICT_ARGUMENTS_ELEMENTS:
+      UNREACHABLE();
+      break;
+  }
 }
 
 
 void KeyedStoreElementStub::Generate(MacroAssembler* masm) {
   switch (elements_kind_) {
     case FAST_ELEMENTS:
     case FAST_HOLEY_ELEMENTS:
     case FAST_SMI_ELEMENTS:
     case FAST_HOLEY_SMI_ELEMENTS: {
       KeyedStoreStubCompiler::GenerateStoreFastElement(masm,
@@ skipping 184 matching lines @@
   // already active, as the hooks won't stack.
   if (entry_hook != 0 && entry_hook_ != 0)
     return false;
 
   entry_hook_ = entry_hook;
   return true;
 }
 
 
 } }  // namespace v8::internal