Reland of [turbofan] Do not use the self reference for turbofan functions

This CL is just a rebase of the original CL
(https://codereview.chromium.org/2150523002).

The reason for reverting was: Dependency of the roll unblocking revert
https://codereview.chromium.org/2147883003/.

Original message:
The self reference requires the allocation of a handle in the macro
assembler, which is not possible if we instantiate the macro assembler
in a worker thread.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2151493002
Cr-Commit-Position: refs/heads/master@{#37744}

src/codegen.cc

@@ -109,9 +109,9 @@ void CodeGenerator::MakeCodePrologue(CompilationInfo* info, const char* kind) {
 #endif  // DEBUG
 }
 
-
 Handle<Code> CodeGenerator::MakeCodeEpilogue(MacroAssembler* masm,
-                                             CompilationInfo* info) {
+                                             CompilationInfo* info,
+                                             Handle<Object> self_reference) {
   Isolate* isolate = info->isolate();
 
   // Allocate and install the code.
@@ -121,11 +121,9 @@ Handle<Code> CodeGenerator::MakeCodeEpilogue(MacroAssembler* masm,
       Code::ExtractKindFromFlags(flags) == Code::OPTIMIZED_FUNCTION ||
       info->IsStub();
   masm->GetCode(&desc);
-  Handle<Code> code =
-      isolate->factory()->NewCode(desc, flags, masm->CodeObject(),
-                                  false, is_crankshafted,
-                                  info->prologue_offset(),
-                                  info->is_debug() && !is_crankshafted);
+  Handle<Code> code = isolate->factory()->NewCode(
+      desc, flags, self_reference, false, is_crankshafted,
+      info->prologue_offset(), info->is_debug() && !is_crankshafted);
   isolate->counters()->total_compiled_code_size()->Increment(
       code->instruction_size());
   isolate->heap()->IncrementCodeGeneratedBytes(is_crankshafted,

src/codegen.h

@@ -78,7 +78,8 @@ class CodeGenerator {
 
   // Allocate and install the code.
   static Handle<Code> MakeCodeEpilogue(MacroAssembler* masm,
-                                       CompilationInfo* info);
+                                       CompilationInfo* info,
+                                       Handle<Object> self_reference);
 
   // Print the code after compiling it.
   static void PrintCode(Handle<Code> code, CompilationInfo* info);

src/compiler/code-generator.cc

@@ -41,7 +41,7 @@ CodeGenerator::CodeGenerator(Frame* frame, Linkage* linkage,
       labels_(zone()->NewArray<Label>(code->InstructionBlockCount())),
       current_block_(RpoNumber::Invalid()),
       current_source_position_(SourcePosition::Unknown()),
-      masm_(info->isolate(), nullptr, 0, CodeObjectRequired::kYes),
+      masm_(info->isolate(), nullptr, 0, CodeObjectRequired::kNo),
       resolver_(this),
       safepoints_(code->zone()),
       handlers_(code->zone()),
@@ -203,8 +203,8 @@ Handle<Code> CodeGenerator::GenerateCode() {
 
   safepoints()->Emit(masm(), frame()->GetTotalFrameSlotCount());
 
-  Handle<Code> result =
-      v8::internal::CodeGenerator::MakeCodeEpilogue(masm(), info);
+  Handle<Code> result = v8::internal::CodeGenerator::MakeCodeEpilogue(
+      masm(), info, Handle<Object>());
   result->set_is_turbofanned(true);
   result->set_stack_slots(frame()->GetTotalFrameSlotCount());
   result->set_safepoint_table_offset(safepoints()->GetCodeOffset());

src/crankshaft/lithium.cc

@@ -457,7 +457,8 @@ Handle<Code> LChunk::Codegen() {
   if (generator.GenerateCode()) {
     generator.CheckEnvironmentUsage();
     CodeGenerator::MakeCodePrologue(info(), "optimized");
-    Handle<Code> code = CodeGenerator::MakeCodeEpilogue(&assembler, info());
+    Handle<Code> code = CodeGenerator::MakeCodeEpilogue(&assembler, info(),
+                                                        assembler.CodeObject());
     generator.FinishCode(code);
     CommitDependencies(code);
     generator.source_position_table_builder()->EndJitLogging(

src/full-codegen/full-codegen.cc

@@ -54,7 +54,8 @@ bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
   }
   unsigned table_offset = cgen.EmitBackEdgeTable();
 
-  Handle<Code> code = CodeGenerator::MakeCodeEpilogue(&masm, info);
+  Handle<Code> code =
+      CodeGenerator::MakeCodeEpilogue(&masm, info, masm.CodeObject());
   cgen.PopulateDeoptimizationData(code);
   cgen.PopulateTypeFeedbackInfo(code);
   cgen.PopulateHandlerTable(code);