X87: [es6] Support super.property in eval and arrow functions

src/x87/full-codegen-x87.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_X87
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 217 matching lines @@
         } else if (FLAG_debug_code) {
           Label done;
           __ JumpIfInNewSpace(esi, eax, &done, Label::kNear);
           __ Abort(kExpectedNewSpaceObject);
           __ bind(&done);
         }
       }
     }
   }
 
+  Variable* home_object_var = scope()->home_object_var();
+  if (home_object_var != nullptr) {
+    __ push(edi);
+  }
+
   ArgumentsAccessStub::HasNewTarget has_new_target =
       IsSubclassConstructor(info->function()->kind())
           ? ArgumentsAccessStub::HAS_NEW_TARGET
           : ArgumentsAccessStub::NO_NEW_TARGET;
 
   // Possibly allocate RestParameters
   int rest_index;
   Variable* rest_param = scope()->rest_parameter(&rest_index);
   if (rest_param) {
     Comment cmnt(masm_, "[ Allocate rest parameter array");
@@ skipping 45 matching lines @@
     } else {
       type = ArgumentsAccessStub::NEW_SLOPPY_FAST;
     }
 
     ArgumentsAccessStub stub(isolate(), type, has_new_target);
     __ CallStub(&stub);
 
     SetVar(arguments, eax, ebx, edx);
   }
 
+  // Possibly set up a local binding to the [[HomeObject]].
+  if (home_object_var != nullptr) {
+    Comment cmnt(masm_, "[ Home object");
+    __ pop(LoadDescriptor::ReceiverRegister());
+    Handle<Symbol> home_object_symbol(isolate()->heap()->home_object_symbol());
+    __ mov(LoadDescriptor::NameRegister(), Immediate(home_object_symbol));
+    __ mov(LoadDescriptor::SlotRegister(),
+           Immediate(SmiFromSlot(function()->HomeObjectFeedbackSlot())));
+    CallLoadIC(NOT_CONTEXTUAL);
+
+    SetVar(home_object_var, eax, ebx, edx);
+  }
+
   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);
 
@@ skipping 924 matching lines @@
   context()->Plug(eax);
 }
 
 
 void FullCodeGenerator::VisitVariableProxy(VariableProxy* expr) {
   Comment cmnt(masm_, "[ VariableProxy");
   EmitVariableLoad(expr);
 }
 
 
-void FullCodeGenerator::EmitLoadHomeObject(SuperReference* expr) {
-  Comment cnmt(masm_, "[ SuperReference ");
-
-  __ mov(LoadDescriptor::ReceiverRegister(),
-         Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
-
-  Handle<Symbol> home_object_symbol(isolate()->heap()->home_object_symbol());
-  __ mov(LoadDescriptor::NameRegister(), home_object_symbol);
-
-  __ mov(LoadDescriptor::SlotRegister(),
-         Immediate(SmiFromSlot(expr->HomeObjectFeedbackSlot())));
-  CallLoadIC(NOT_CONTEXTUAL);
-
-  __ cmp(eax, isolate()->factory()->undefined_value());
-  Label done;
-  __ j(not_equal, &done);
-  __ CallRuntime(Runtime::kThrowNonMethodError, 0);
-  __ bind(&done);
-}
-
-
 void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer,
                                                   int offset) {
   if (NeedsHomeObject(initializer)) {
     __ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, 0));
     __ mov(StoreDescriptor::NameRegister(),
            Immediate(isolate()->factory()->home_object_symbol()));
     __ mov(StoreDescriptor::ValueRegister(),
            Operand(esp, offset * kPointerSize));
     CallStoreIC();
   }
@@ skipping 609 matching lines @@
   Property* property = expr->target()->AsProperty();
   LhsKind assign_type = GetAssignType(property);
 
   // Evaluate LHS expression.
   switch (assign_type) {
     case VARIABLE:
       // Nothing to do here.
       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()) {
         __ push(MemOperand(esp, kPointerSize));
         __ push(result_register());
       }
       break;
     case NAMED_PROPERTY:
       if (expr->is_compound()) {
         // We need the receiver both on the stack and in the register.
         VisitForStackValue(property->obj());
         __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0));
       } else {
         VisitForStackValue(property->obj());
       }
       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()) {
         __ push(MemOperand(esp, 2 * kPointerSize));
         __ push(MemOperand(esp, 2 * kPointerSize));
         __ push(result_register());
       }
       break;
     case KEYED_PROPERTY: {
       if (expr->is_compound()) {
@@ skipping 602 matching lines @@
       __ Move(StoreDescriptor::ReceiverRegister(), eax);
       __ pop(StoreDescriptor::ValueRegister());  // Restore value.
       __ mov(StoreDescriptor::NameRegister(),
              prop->key()->AsLiteral()->value());
       CallStoreIC();
       break;
     }
     case NAMED_SUPER_PROPERTY: {
       __ push(eax);
       VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(prop->obj()->AsSuperReference());
+      VisitForAccumulatorValue(
+          prop->obj()->AsSuperReference()->home_object_var());
       // stack: value, this; eax: home_object
       Register scratch = ecx;
       Register scratch2 = edx;
       __ mov(scratch, result_register());               // home_object
       __ mov(eax, MemOperand(esp, kPointerSize));       // value
       __ mov(scratch2, MemOperand(esp, 0));             // this
       __ mov(MemOperand(esp, kPointerSize), scratch2);  // this
       __ mov(MemOperand(esp, 0), scratch);              // home_object
       // stack: this, home_object. eax: value
       EmitNamedSuperPropertyStore(prop);
       break;
     }
     case KEYED_SUPER_PROPERTY: {
       __ push(eax);
       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 = ecx;
       Register scratch2 = edx;
       __ mov(scratch2, MemOperand(esp, 2 * kPointerSize));  // value
       // stack: value, this, home_object; eax: key, edx: value
       __ mov(scratch, MemOperand(esp, kPointerSize));  // this
       __ mov(MemOperand(esp, 2 * kPointerSize), scratch);
       __ mov(scratch, MemOperand(esp, 0));  // home_object
       __ mov(MemOperand(esp, kPointerSize), scratch);
       __ mov(MemOperand(esp, 0), eax);
@@ skipping 190 matching lines @@
   Comment cmnt(masm_, "[ Property");
   Expression* key = expr->key();
 
   if (key->IsPropertyName()) {
     if (!expr->IsSuperAccess()) {
       VisitForAccumulatorValue(expr->obj());
       __ Move(LoadDescriptor::ReceiverRegister(), result_register());
       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());
       __ pop(LoadDescriptor::ReceiverRegister());                  // Object.
       __ Move(LoadDescriptor::NameRegister(), result_register());  // Key.
       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(eax);
 }
 
 
 void FullCodeGenerator::CallIC(Handle<Code> code,
@@ skipping 38 matching lines @@
   Expression* callee = expr->expression();
   DCHECK(callee->IsProperty());
   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.
   SuperReference* super_ref = callee->AsProperty()->obj()->AsSuperReference();
-  EmitLoadHomeObject(super_ref);
-  __ push(eax);
+  VisitForStackValue(super_ref->home_object_var());
   VisitForAccumulatorValue(super_ref->this_var());
   __ push(eax);
   __ push(eax);
   __ push(Operand(esp, kPointerSize * 2));
   __ push(Immediate(key->value()));
   // Stack here:
   //  - home_object
   //  - this (receiver)
   //  - this (receiver) <-- LoadFromSuper will pop here and below.
   //  - home_object
@@ skipping 35 matching lines @@
 
 void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) {
   Expression* callee = expr->expression();
   DCHECK(callee->IsProperty());
   Property* prop = callee->AsProperty();
   DCHECK(prop->IsSuperAccess());
 
   SetSourcePosition(prop->position());
   // Load the function from the receiver.
   SuperReference* super_ref = callee->AsProperty()->obj()->AsSuperReference();
-  EmitLoadHomeObject(super_ref);
-  __ push(eax);
+  VisitForStackValue(super_ref->home_object_var());
   VisitForAccumulatorValue(super_ref->this_var());
   __ push(eax);
   __ push(eax);
   __ push(Operand(esp, kPointerSize * 2));
   VisitForStackValue(prop->key());
   // Stack here:
   //  - home_object
   //  - this (receiver)
   //  - this (receiver) <-- LoadKeyedFromSuper will pop here and below.
   //  - home_object
@@ skipping 1850 matching lines @@
       case NAMED_PROPERTY: {
         // Put the object both on the stack and in the register.
         VisitForStackValue(prop->obj());
         __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 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());
         __ push(MemOperand(esp, kPointerSize));
         __ push(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());
         __ push(MemOperand(esp, 2 * kPointerSize));
         __ push(MemOperand(esp, 2 * kPointerSize));
         __ push(result_register());
         EmitKeyedSuperPropertyLoad(prop);
         break;
       }
 
       case KEYED_PROPERTY: {
@@ skipping 587 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_X87