[TypeFeedbackVector] Root literal arrays in function literals slots

src/full-codegen/full-codegen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/full-codegen/full-codegen.h"
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/ast.h"
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 1009 matching lines @@
   NestedStatement* current = nesting_stack_;
   int context_length = 0;
   while (current != NULL) {
     if (HasStackOverflow()) return;
     current = current->Exit(&context_length);
   }
   EmitReturnSequence();
 }
 
 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info,
+                                       FeedbackVectorSlot slot,
                                        bool pretenure) {
+  // If slot is invalid, then it's a native function literal and we
+  // can pass the empty array or empty literal array, something like that...
+
   // If we're running with the --always-opt or the --prepare-always-opt
   // flag, we need to use the runtime function so that the new function
   // we are creating here gets a chance to have its code optimized and
   // doesn't just get a copy of the existing unoptimized code.
   if (!FLAG_always_opt && !FLAG_prepare_always_opt && !pretenure &&
       scope()->is_function_scope()) {
     FastNewClosureStub stub(isolate());
     __ Move(stub.GetCallInterfaceDescriptor().GetRegisterParameter(0), info);
+    DCHECK(!slot.IsInvalid());
+    __ EmitLoadTypeFeedbackVector(
+        stub.GetCallInterfaceDescriptor().GetRegisterParameter(1));
+    __ Move(stub.GetCallInterfaceDescriptor().GetRegisterParameter(2),
+            SmiFromSlot(slot));
     __ CallStub(&stub);
   } else {
     __ Push(info);
+    __ EmitLoadTypeFeedbackVector(result_register());
+    __ Push(result_register());
+    __ Push(SmiFromSlot(slot));
     __ CallRuntime(pretenure ? Runtime::kNewClosure_Tenured
                              : Runtime::kNewClosure);
   }
   context()->Plug(result_register());
 }
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetExpressionPosition(prop);
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!key->value()->IsSmi());
@@ skipping 241 matching lines @@
 void FullCodeGenerator::VisitFunctionLiteral(FunctionLiteral* expr) {
   Comment cmnt(masm_, "[ FunctionLiteral");
 
   // Build the function boilerplate and instantiate it.
   Handle<SharedFunctionInfo> function_info =
       Compiler::GetSharedFunctionInfo(expr, script(), info_, compilation_mode_);
   if (function_info.is_null()) {
     SetStackOverflow();
     return;
   }
-  EmitNewClosure(function_info, expr->pretenure());
+  EmitNewClosure(function_info, expr->LiteralFeedbackSlot(), expr->pretenure());
 }
 
 
 void FullCodeGenerator::VisitClassLiteral(ClassLiteral* lit) {
   // Unsupported
   UNREACHABLE();
 }
 
 void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) {
   Comment cmnt(masm_, "[ RegExpLiteral");
@@ skipping 12 matching lines @@
   LoadFromFrameField(StandardFrameConstants::kContextOffset,
                      context_register());
   context()->Plug(result_register());
 }
 
 void FullCodeGenerator::VisitNativeFunctionLiteral(
     NativeFunctionLiteral* expr) {
   Comment cmnt(masm_, "[ NativeFunctionLiteral");
   Handle<SharedFunctionInfo> shared =
       Compiler::GetSharedFunctionInfoForNative(expr->extension(), expr->name());
-  EmitNewClosure(shared, false);
+  EmitNewClosure(shared, expr->LiteralFeedbackSlot(), false);
 }
 
 
 void FullCodeGenerator::VisitThrow(Throw* expr) {
   Comment cmnt(masm_, "[ Throw");
   VisitForStackValue(expr->exception());
   SetExpressionPosition(expr);
   CallRuntimeWithOperands(Runtime::kThrow);
   // Never returns here.
 
@@ skipping 265 matching lines @@
   return info_->has_simple_parameters();
 }
 
 FunctionLiteral* FullCodeGenerator::literal() const { return info_->literal(); }
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8