[es6] Support super.property in eval and arrow functions

src/arm64/full-codegen-arm64.cc

 // Copyright 2013 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_ARM64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 289 matching lines @@
       type = ArgumentsAccessStub::NEW_SLOPPY_SLOW;
     } else {
       type = ArgumentsAccessStub::NEW_SLOPPY_FAST;
     }
     ArgumentsAccessStub stub(isolate(), type, has_new_target);
     __ CallStub(&stub);
 
     SetVar(arguments, x0, x1, x2);
   }
 
+  // Possibly set up a local binding to the [[HomeObject]].
+  Variable* home_object_var = scope()->home_object_var();
+  if (home_object_var != nullptr) {
+    Comment cmnt(masm_, "[ Home object");
+    if (function_in_register_x1) {
+      __ Mov(LoadDescriptor::ReceiverRegister(), x1);
+    } else {
+      __ ldr(LoadDescriptor::ReceiverRegister(),
+             MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
+    }
+    Handle<Symbol> home_object_symbol(isolate()->heap()->home_object_symbol());
+    __ Mov(LoadDescriptor::NameRegister(), home_object_symbol);
+
+    if (FLAG_vector_ics) {
+      __ Mov(VectorLoadICDescriptor::SlotRegister(),
+             SmiFromSlot(function()->HomeObjectFeedbackSlot()));
+    }
+    CallLoadIC(NOT_CONTEXTUAL);
+
+    SetVar(home_object_var, x0, x1, x2);
+  }
+
   if (FLAG_trace) {
     __ CallRuntime(Runtime::kTraceEnter, 0);
   }
 
-
   // Visit the declarations and body unless there is an illegal
   // redeclaration.
   if (scope()->HasIllegalRedeclaration()) {
     Comment cmnt(masm_, "[ Declarations");
     scope()->VisitIllegalRedeclaration(this);
 
   } else {
     PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS);
     { Comment cmnt(masm_, "[ Declarations");
       if (scope()->is_function_scope() && scope()->function() != NULL) {
@@ skipping 981 matching lines @@
   context()->Plug(x0);
 }
 
 
 void FullCodeGenerator::VisitVariableProxy(VariableProxy* expr) {
   Comment cmnt(masm_, "[ VariableProxy");
   EmitVariableLoad(expr);
 }
 
 
-void FullCodeGenerator::EmitLoadHomeObject(SuperReference* expr) {
-  Comment cnmt(masm_, "[ SuperReference ");
-
-  __ ldr(LoadDescriptor::ReceiverRegister(),
-         MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
-
-  Handle<Symbol> home_object_symbol(isolate()->heap()->home_object_symbol());
-  __ Mov(LoadDescriptor::NameRegister(), Operand(home_object_symbol));
-
-  if (FLAG_vector_ics) {
-    __ Mov(VectorLoadICDescriptor::SlotRegister(),
-           SmiFromSlot(expr->HomeObjectFeedbackSlot()));
-    CallLoadIC(NOT_CONTEXTUAL);
-  } else {
-    CallLoadIC(NOT_CONTEXTUAL, expr->HomeObjectFeedbackId());
-  }
-
-  __ Mov(x10, Operand(isolate()->factory()->undefined_value()));
-  __ cmp(x0, x10);
-  Label done;
-  __ b(&done, ne);
-  __ CallRuntime(Runtime::kThrowNonMethodError, 0);
-  __ bind(&done);
-}
-
-
 void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer,
                                                   int offset) {
   if (NeedsHomeObject(initializer)) {
     __ Peek(StoreDescriptor::ReceiverRegister(), 0);
     __ Mov(StoreDescriptor::NameRegister(),
            Operand(isolate()->factory()->home_object_symbol()));
     __ Peek(StoreDescriptor::ValueRegister(), offset * kPointerSize);
     CallStoreIC();
   }
 }
@@ skipping 580 matching lines @@
       if (expr->is_compound()) {
         // We need the receiver both on the stack and in the register.
         VisitForStackValue(property->obj());
         __ Peek(LoadDescriptor::ReceiverRegister(), 0);
       } else {
         VisitForStackValue(property->obj());
       }
       break;
     case NAMED_SUPER_PROPERTY:
       VisitForStackValue(property->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(property->obj()->AsSuperReference());
+      VisitForAccumulatorValue(
+          property->obj()->AsSuperReference()->home_object_var());
       __ Push(result_register());
       if (expr->is_compound()) {
         const Register scratch = x10;
         __ Peek(scratch, kPointerSize);
         __ Push(scratch, result_register());
       }
       break;
     case KEYED_SUPER_PROPERTY:
       VisitForStackValue(property->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(property->obj()->AsSuperReference());
-      __ Push(result_register());
+      VisitForStackValue(
+          property->obj()->AsSuperReference()->home_object_var());
       VisitForAccumulatorValue(property->key());
       __ Push(result_register());
       if (expr->is_compound()) {
         const Register scratch1 = x10;
         const Register scratch2 = x11;
         __ Peek(scratch1, 2 * kPointerSize);
         __ Peek(scratch2, kPointerSize);
         __ Push(scratch1, scratch2, result_register());
       }
       break;
@@ skipping 343 matching lines @@
       __ Mov(StoreDescriptor::ReceiverRegister(), x0);
       __ Pop(StoreDescriptor::ValueRegister());  // Restore value.
       __ Mov(StoreDescriptor::NameRegister(),
              Operand(prop->key()->AsLiteral()->value()));
       CallStoreIC();
       break;
     }
     case NAMED_SUPER_PROPERTY: {
       __ Push(x0);
       VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(prop->obj()->AsSuperReference());
+      VisitForAccumulatorValue(
+          prop->obj()->AsSuperReference()->home_object_var());
       // stack: value, this; x0: home_object
       Register scratch = x10;
       Register scratch2 = x11;
       __ mov(scratch, result_register());  // home_object
       __ Peek(x0, kPointerSize);           // value
       __ Peek(scratch2, 0);                // this
       __ Poke(scratch2, kPointerSize);     // this
       __ Poke(scratch, 0);                 // home_object
       // stack: this, home_object; x0: value
       EmitNamedSuperPropertyStore(prop);
       break;
     }
     case KEYED_SUPER_PROPERTY: {
       __ Push(x0);
       VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(prop->obj()->AsSuperReference());
-      __ Push(result_register());
+      VisitForStackValue(prop->obj()->AsSuperReference()->home_object_var());
       VisitForAccumulatorValue(prop->key());
       Register scratch = x10;
       Register scratch2 = x11;
       __ Peek(scratch2, 2 * kPointerSize);  // value
       // stack: value, this, home_object; x0: key, x11: value
       __ Peek(scratch, kPointerSize);  // this
       __ Poke(scratch, 2 * kPointerSize);
       __ Peek(scratch, 0);  // home_object
       __ Poke(scratch, kPointerSize);
       __ Poke(x0, 0);
@@ skipping 194 matching lines @@
   Comment cmnt(masm_, "[ Property");
   Expression* key = expr->key();
 
   if (key->IsPropertyName()) {
     if (!expr->IsSuperAccess()) {
       VisitForAccumulatorValue(expr->obj());
       __ Move(LoadDescriptor::ReceiverRegister(), x0);
       EmitNamedPropertyLoad(expr);
     } else {
       VisitForStackValue(expr->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(expr->obj()->AsSuperReference());
-      __ Push(result_register());
+      VisitForStackValue(expr->obj()->AsSuperReference()->home_object_var());
       EmitNamedSuperPropertyLoad(expr);
     }
   } else {
     if (!expr->IsSuperAccess()) {
       VisitForStackValue(expr->obj());
       VisitForAccumulatorValue(expr->key());
       __ Move(LoadDescriptor::NameRegister(), x0);
       __ Pop(LoadDescriptor::ReceiverRegister());
       EmitKeyedPropertyLoad(expr);
     } else {
       VisitForStackValue(expr->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(expr->obj()->AsSuperReference());
-      __ Push(result_register());
+      VisitForStackValue(expr->obj()->AsSuperReference()->home_object_var());
       VisitForStackValue(expr->key());
       EmitKeyedSuperPropertyLoad(expr);
     }
   }
   PrepareForBailoutForId(expr->LoadId(), TOS_REG);
   context()->Plug(x0);
 }
 
 
 void FullCodeGenerator::CallIC(Handle<Code> code,
@@ skipping 48 matching lines @@
   Property* prop = callee->AsProperty();
   DCHECK(prop->IsSuperAccess());
 
   SetSourcePosition(prop->position());
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!key->value()->IsSmi());
 
   // Load the function from the receiver.
   const Register scratch = x10;
   SuperReference* super_ref = callee->AsProperty()->obj()->AsSuperReference();
-  EmitLoadHomeObject(super_ref);
-  __ Push(x0);
+  VisitForStackValue(super_ref->home_object_var());
   VisitForAccumulatorValue(super_ref->this_var());
   __ Push(x0);
   __ Peek(scratch, kPointerSize);
   __ Push(x0, scratch);
   __ Push(key->value());
 
   // Stack here:
   //  - home_object
   //  - this (receiver)
   //  - this (receiver) <-- LoadFromSuper will pop here and below.
@@ skipping 38 matching lines @@
   Expression* callee = expr->expression();
   DCHECK(callee->IsProperty());
   Property* prop = callee->AsProperty();
   DCHECK(prop->IsSuperAccess());
 
   SetSourcePosition(prop->position());
 
   // Load the function from the receiver.
   const Register scratch = x10;
   SuperReference* super_ref = callee->AsProperty()->obj()->AsSuperReference();
-  EmitLoadHomeObject(super_ref);
-  __ Push(x0);
+  VisitForStackValue(super_ref->home_object_var());
   VisitForAccumulatorValue(super_ref->this_var());
   __ Push(x0);
   __ Peek(scratch, kPointerSize);
   __ Push(x0, scratch);
   VisitForStackValue(prop->key());
 
   // Stack here:
   //  - home_object
   //  - this (receiver)
   //  - this (receiver) <-- LoadKeyedFromSuper will pop here and below.
@@ skipping 1819 matching lines @@
       case NAMED_PROPERTY: {
         // Put the object both on the stack and in the register.
         VisitForStackValue(prop->obj());
         __ Peek(LoadDescriptor::ReceiverRegister(), 0);
         EmitNamedPropertyLoad(prop);
         break;
       }
 
       case NAMED_SUPER_PROPERTY: {
         VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-        EmitLoadHomeObject(prop->obj()->AsSuperReference());
+        VisitForAccumulatorValue(
+            prop->obj()->AsSuperReference()->home_object_var());
         __ Push(result_register());
         const Register scratch = x10;
         __ Peek(scratch, kPointerSize);
         __ Push(scratch, result_register());
         EmitNamedSuperPropertyLoad(prop);
         break;
       }
 
       case KEYED_SUPER_PROPERTY: {
         VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-        EmitLoadHomeObject(prop->obj()->AsSuperReference());
-        __ Push(result_register());
+        VisitForStackValue(prop->obj()->AsSuperReference()->home_object_var());
         VisitForAccumulatorValue(prop->key());
         __ Push(result_register());
         const Register scratch1 = x10;
         const Register scratch2 = x11;
         __ Peek(scratch1, 2 * kPointerSize);
         __ Peek(scratch2, kPointerSize);
         __ Push(scratch1, scratch2, result_register());
         EmitKeyedSuperPropertyLoad(prop);
         break;
       }
@@ skipping 927 matching lines @@
     }
   }
 
   return INTERRUPT;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64