Support count operations on super named properties.

src/x64/full-codegen-x64.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/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 1946 matching lines @@
     case VARIABLE:
       EmitVariableAssignment(expr->target()->AsVariableProxy()->var(),
                              expr->op());
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       context()->Plug(rax);
       break;
     case NAMED_PROPERTY:
       EmitNamedPropertyAssignment(expr);
       break;
     case NAMED_SUPER_PROPERTY:
-      EmitNamedSuperPropertyAssignment(expr);
+      EmitNamedSuperPropertyStore(property);
+      context()->Plug(rax);
       break;
     case KEYED_PROPERTY:
       EmitKeyedPropertyAssignment(expr);
       break;
   }
 }
 
 
 void FullCodeGenerator::VisitYield(Yield* expr) {
   Comment cmnt(masm_, "[ Yield");
@@ skipping 562 matching lines @@
   SetSourcePosition(expr->position());
   __ Move(StoreDescriptor::NameRegister(), prop->key()->AsLiteral()->value());
   __ Pop(StoreDescriptor::ReceiverRegister());
   CallStoreIC(expr->AssignmentFeedbackId());
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
   context()->Plug(rax);
 }
 
 
-void FullCodeGenerator::EmitNamedSuperPropertyAssignment(Assignment* expr) {
+void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) {
   // Assignment to named property of super.
   // rax : value
   // stack : receiver ('this'), home_object
-  Property* prop = expr->target()->AsProperty();
   DCHECK(prop != NULL);
   Literal* key = prop->key()->AsLiteral();
   DCHECK(key != NULL);
 
   __ Push(rax);
   __ Push(key->value());
   __ CallRuntime((strict_mode() == STRICT ? Runtime::kStoreToSuper_Strict
                                           : Runtime::kStoreToSuper_Sloppy),
                  4);
-  context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
   // Assignment to a property, using a keyed store IC.
 
   __ Pop(StoreDescriptor::NameRegister());  // Key.
   __ Pop(StoreDescriptor::ReceiverRegister());
   DCHECK(StoreDescriptor::ValueRegister().is(rax));
   // Record source code position before IC call.
@@ skipping 1763 matching lines @@
 
 
 void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
   DCHECK(expr->expression()->IsValidReferenceExpression());
 
   Comment cmnt(masm_, "[ CountOperation");
   SetSourcePosition(expr->position());
 
   // Expression can only be a property, a global or a (parameter or local)
   // slot.
-  enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY };
+  enum LhsKind {
+    VARIABLE,
+    NAMED_PROPERTY,
+    KEYED_PROPERTY,
+    NAMED_SUPER_PROPERTY
+  };
   LhsKind assign_type = VARIABLE;
   Property* prop = expr->expression()->AsProperty();
   // In case of a property we use the uninitialized expression context
   // of the key to detect a named property.
   if (prop != NULL) {
     assign_type =
-        (prop->key()->IsPropertyName()) ? NAMED_PROPERTY : KEYED_PROPERTY;
-    if (prop->IsSuperAccess()) {
-      // throw exception.
-      VisitSuperReference(prop->obj()->AsSuperReference());
-      return;
-    }
+        (prop->key()->IsPropertyName())
+            ? (prop->IsSuperAccess() ? NAMED_SUPER_PROPERTY : NAMED_PROPERTY)
+            : KEYED_PROPERTY;
   }
 
   // Evaluate expression and get value.
   if (assign_type == VARIABLE) {
     DCHECK(expr->expression()->AsVariableProxy()->var() != NULL);
     AccumulatorValueContext context(this);
     EmitVariableLoad(expr->expression()->AsVariableProxy());
   } else {
     // Reserve space for result of postfix operation.
     if (expr->is_postfix() && !context()->IsEffect()) {
       __ Push(Smi::FromInt(0));
     }
     if (assign_type == NAMED_PROPERTY) {
       VisitForStackValue(prop->obj());
       __ movp(LoadDescriptor::ReceiverRegister(), Operand(rsp, 0));
       EmitNamedPropertyLoad(prop);
+    } else if (assign_type == NAMED_SUPER_PROPERTY) {
+      VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+      EmitLoadHomeObject(prop->obj()->AsSuperReference());
+      __ Push(result_register());
+      __ Push(MemOperand(rsp, kPointerSize));
+      __ Push(result_register());
+      EmitNamedSuperPropertyLoad(prop);
     } else {
       VisitForStackValue(prop->obj());
       VisitForStackValue(prop->key());
       // Leave receiver on stack
       __ movp(LoadDescriptor::ReceiverRegister(), Operand(rsp, kPointerSize));
       // Copy of key, needed for later store.
       __ movp(LoadDescriptor::NameRegister(), Operand(rsp, 0));
       EmitKeyedPropertyLoad(prop);
     }
   }
@@ skipping 19 matching lines @@
         // Save the result on the stack. If we have a named or keyed property
         // we store the result under the receiver that is currently on top
         // of the stack.
         switch (assign_type) {
           case VARIABLE:
             __ Push(rax);
             break;
           case NAMED_PROPERTY:
             __ movp(Operand(rsp, kPointerSize), rax);
             break;
+          case NAMED_SUPER_PROPERTY:
+            __ movp(Operand(rsp, 2 * kPointerSize), rax);
+            break;
           case KEYED_PROPERTY:
             __ movp(Operand(rsp, 2 * kPointerSize), rax);
             break;
         }
       }
     }
 
     SmiOperationExecutionMode mode;
     mode.Add(PRESERVE_SOURCE_REGISTER);
     mode.Add(BAILOUT_ON_NO_OVERFLOW);
@@ skipping 15 matching lines @@
       // Save the result on the stack. If we have a named or keyed property
       // we store the result under the receiver that is currently on top
       // of the stack.
       switch (assign_type) {
         case VARIABLE:
           __ Push(rax);
           break;
         case NAMED_PROPERTY:
           __ movp(Operand(rsp, kPointerSize), rax);
           break;
+        case NAMED_SUPER_PROPERTY:
+          __ movp(Operand(rsp, 2 * kPointerSize), rax);
+          break;
         case KEYED_PROPERTY:
           __ movp(Operand(rsp, 2 * kPointerSize), rax);
           break;
       }
     }
   }
 
   // Record position before stub call.
   SetSourcePosition(expr->position());
 
@@ skipping 39 matching lines @@
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(rax);
       }
       break;
     }
+    case NAMED_SUPER_PROPERTY: {
+      EmitNamedSuperPropertyStore(prop);
+      if (expr->is_postfix()) {
+        if (!context()->IsEffect()) {
+          context()->PlugTOS();
+        }
+      } else {
+        context()->Plug(rax);
+      }
+      break;
+    }
     case KEYED_PROPERTY: {
       __ Pop(StoreDescriptor::NameRegister());
       __ Pop(StoreDescriptor::ReceiverRegister());
       Handle<Code> ic =
           CodeFactory::KeyedStoreIC(isolate(), strict_mode()).code();
       CallIC(ic, expr->CountStoreFeedbackId());
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
@@ skipping 443 matching lines @@
   DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64