[Isolates] Less TLS reads in parser and full codegens.

src/full-codegen.cc

 // Copyright 2010 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 257 matching lines @@
 }
 
 
 void BreakableStatementChecker::VisitThisFunction(ThisFunction* expr) {
 }
 
 
 #define __ ACCESS_MASM(masm())
 
 bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
+  Isolate* isolate = Isolate::Current();
   Handle<Script> script = info->script();
   if (!script->IsUndefined() && !script->source()->IsUndefined()) {
     int len = String::cast(script->source())->length();
-    COUNTERS->total_full_codegen_source_size()->Increment(len);
+    isolate->counters()->total_full_codegen_source_size()->Increment(len);
   }
   if (FLAG_trace_codegen) {
     PrintF("Full Compiler - ");
   }
   CodeGenerator::MakeCodePrologue(info);
   const int kInitialBufferSize = 4 * KB;
   MacroAssembler masm(NULL, kInitialBufferSize);
 
   FullCodeGenerator cgen(&masm);
   cgen.Generate(info);
   if (cgen.HasStackOverflow()) {
-    ASSERT(!Isolate::Current()->has_pending_exception());
+    ASSERT(!isolate->has_pending_exception());
     return false;
   }
   unsigned table_offset = cgen.EmitStackCheckTable();
 
   Code::Flags flags = Code::ComputeFlags(Code::FUNCTION, NOT_IN_LOOP);
   Handle<Code> code = CodeGenerator::MakeCodeEpilogue(&masm, flags, info);
   code->set_optimizable(info->IsOptimizable());
   cgen.PopulateDeoptimizationData(code);
   code->set_has_deoptimization_support(info->HasDeoptimizationSupport());
   code->set_allow_osr_at_loop_nesting_level(0);
@@ skipping 21 matching lines @@
   return offset;
 }
 
 
 void FullCodeGenerator::PopulateDeoptimizationData(Handle<Code> code) {
   // Fill in the deoptimization information.
   ASSERT(info_->HasDeoptimizationSupport() || bailout_entries_.is_empty());
   if (!info_->HasDeoptimizationSupport()) return;
   int length = bailout_entries_.length();
   Handle<DeoptimizationOutputData> data =
-      Isolate::Current()->factory()->
+      isolate()->factory()->
       NewDeoptimizationOutputData(length, TENURED);
   for (int i = 0; i < length; i++) {
     data->SetAstId(i, Smi::FromInt(bailout_entries_[i].id));
     data->SetPcAndState(i, Smi::FromInt(bailout_entries_[i].pc_and_state));
   }
   code->set_deoptimization_data(*data);
 }
 
 
 void FullCodeGenerator::PrepareForBailout(AstNode* node, State state) {
@@ skipping 182 matching lines @@
       VisitDeclaration(decl);
     } else {
       // Count global variables and functions for later processing
       globals++;
     }
   }
 
   // Compute array of global variable and function declarations.
   // Do nothing in case of no declared global functions or variables.
   if (globals > 0) {
-    Handle<FixedArray> array = FACTORY->NewFixedArray(2 * globals, TENURED);
+    Handle<FixedArray> array =
+        isolate()->factory()->NewFixedArray(2 * globals, TENURED);
     for (int j = 0, i = 0; i < length; i++) {
       Declaration* decl = declarations->at(i);
       Variable* var = decl->proxy()->var();
       Slot* slot = var->AsSlot();
 
       if ((slot == NULL || slot->type() != Slot::LOOKUP) && var->is_global()) {
         array->set(j++, *(var->name()));
         if (decl->fun() == NULL) {
           if (var->mode() == Variable::CONST) {
             // In case this is const property use the hole.
@@ skipping 30 matching lines @@
 void FullCodeGenerator::SetReturnPosition(FunctionLiteral* fun) {
   if (FLAG_debug_info) {
     CodeGenerator::RecordPositions(masm_, fun->end_position() - 1);
   }
 }
 
 
 void FullCodeGenerator::SetStatementPosition(Statement* stmt) {
   if (FLAG_debug_info) {
 #ifdef ENABLE_DEBUGGER_SUPPORT
-    if (!Isolate::Current()->debugger()->IsDebuggerActive()) {
+    if (!isolate()->debugger()->IsDebuggerActive()) {
       CodeGenerator::RecordPositions(masm_, stmt->statement_pos());
     } else {
       // Check if the statement will be breakable without adding a debug break
       // slot.
       BreakableStatementChecker checker;
       checker.Check(stmt);
       // Record the statement position right here if the statement is not
       // breakable. For breakable statements the actual recording of the
       // position will be postponed to the breakable code (typically an IC).
       bool position_recorded = CodeGenerator::RecordPositions(
           masm_, stmt->statement_pos(), !checker.is_breakable());
       // If the position recording did record a new position generate a debug
       // break slot to make the statement breakable.
       if (position_recorded) {
         Debug::GenerateSlot(masm_);
       }
     }
 #else
     CodeGenerator::RecordPositions(masm_, stmt->statement_pos());
 #endif
   }
 }
 
 
 void FullCodeGenerator::SetExpressionPosition(Expression* expr, int pos) {
   if (FLAG_debug_info) {
 #ifdef ENABLE_DEBUGGER_SUPPORT
-    if (!Isolate::Current()->debugger()->IsDebuggerActive()) {
+    if (!isolate()->debugger()->IsDebuggerActive()) {
       CodeGenerator::RecordPositions(masm_, pos);
     } else {
       // Check if the expression will be breakable without adding a debug break
       // slot.
       BreakableStatementChecker checker;
       checker.Check(expr);
       // Record a statement position right here if the expression is not
       // breakable. For breakable expressions the actual recording of the
       // position will be postponed to the breakable code (typically an IC).
       // NOTE this will record a statement position for something which might
@@ skipping 721 matching lines @@
   __ Drop(stack_depth);
   __ PopTryHandler();
   return 0;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal