Implement target cache for constructor calls.

src/full-codegen.cc

Index: src/full-codegen.cc
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index 5c7a23d54de942a2f5122f64ef0da65b66ba23d8..0f110b9412bab2d54f9b7674615f96b3517f2b68 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -285,6 +285,7 @@ bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
   Handle<Code> code = CodeGenerator::MakeCodeEpilogue(&masm, flags, info);
   code->set_optimizable(info->IsOptimizable());
   cgen.PopulateDeoptimizationData(code);
+  cgen.PopulateCacheCells(code);
   code->set_has_deoptimization_support(info->HasDeoptimizationSupport());
   code->set_handler_table(*cgen.handler_table());
 #ifdef ENABLE_DEBUGGER_SUPPORT
@@ -329,8 +330,7 @@ void FullCodeGenerator::PopulateDeoptimizationData(Handle<Code> code) {
   ASSERT(info_->HasDeoptimizationSupport() || bailout_entries_.is_empty());
   if (!info_->HasDeoptimizationSupport()) return;
   int length = bailout_entries_.length();
-  Handle<DeoptimizationOutputData> data =
-      isolate()->factory()->
+  Handle<DeoptimizationOutputData> data = isolate()->factory()->
       NewDeoptimizationOutputData(length, TENURED);
   for (int i = 0; i < length; i++) {
     data->SetAstId(i, Smi::FromInt(bailout_entries_[i].id));
@@ -340,6 +340,20 @@ void FullCodeGenerator::PopulateDeoptimizationData(Handle<Code> code) {
 }
 
 
+void FullCodeGenerator::PopulateCacheCells(Handle<Code> code) {
+  if (cache_cells_.is_empty()) return;
+  int length = cache_cells_.length();
+  Handle<CacheCells> cache = Handle<CacheCells>::cast(isolate()->factory()->
+      NewFixedArray(CacheCells::LengthOfFixedArray(length), TENURED));
+  for (int i = 0; i < length; i++) {
+    cache->SetAstId(i, Smi::FromInt(cache_cells_[i].id));
+    cache->SetCell(i, *cache_cells_[i].cell);
+  }
+  code->set_cache_cells(*cache);
+}
+
+
+
 void FullCodeGenerator::PrepareForBailout(Expression* node, State state) {
   PrepareForBailoutForId(node->id(), state);
 }
@@ -383,6 +397,13 @@ void FullCodeGenerator::PrepareForBailoutForId(unsigned id, State state) {
 }
 
 
+void FullCodeGenerator::RecordCacheCell(unsigned id,
+                                        Handle<JSGlobalPropertyCell> cell) {
+  CacheCellEntry entry = { id, cell };
+  cache_cells_.Add(entry);
+}
+
+
 void FullCodeGenerator::RecordStackCheck(unsigned ast_id) {
   // The pc offset does not need to be encoded and packed together with a
   // state.