[fullcodegen] Remove super property access support.

src/full-codegen/s390/full-codegen-s390.cc

 // Copyright 2015 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.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/full-codegen/full-codegen.h"
 #include "src/ast/compile-time-value.h"
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
@@ skipping 1330 matching lines @@
       break;
     case NAMED_PROPERTY:
       if (expr->is_compound()) {
         // We need the receiver both on the stack and in the register.
         VisitForStackValue(property->obj());
         __ LoadP(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
       } else {
         VisitForStackValue(property->obj());
       }
       break;
-    case NAMED_SUPER_PROPERTY:
-      VisitForStackValue(
-          property->obj()->AsSuperPropertyReference()->this_var());
-      VisitForAccumulatorValue(
-          property->obj()->AsSuperPropertyReference()->home_object());
-      PushOperand(result_register());
-      if (expr->is_compound()) {
-        const Register scratch = r3;
-        __ LoadP(scratch, MemOperand(sp, kPointerSize));
-        PushOperands(scratch, result_register());
-      }
-      break;
-    case KEYED_SUPER_PROPERTY: {
-      VisitForStackValue(
-          property->obj()->AsSuperPropertyReference()->this_var());
-      VisitForStackValue(
-          property->obj()->AsSuperPropertyReference()->home_object());
-      VisitForAccumulatorValue(property->key());
-      PushOperand(result_register());
-      if (expr->is_compound()) {
-        const Register scratch1 = r4;
-        const Register scratch2 = r3;
-        __ LoadP(scratch1, MemOperand(sp, 2 * kPointerSize));
-        __ LoadP(scratch2, MemOperand(sp, 1 * kPointerSize));
-        PushOperands(scratch1, scratch2, result_register());
-      }
-      break;
-    }
     case KEYED_PROPERTY:
       if (expr->is_compound()) {
         VisitForStackValue(property->obj());
         VisitForStackValue(property->key());
         __ LoadP(LoadDescriptor::ReceiverRegister(),
                  MemOperand(sp, 1 * kPointerSize));
         __ LoadP(LoadDescriptor::NameRegister(), MemOperand(sp, 0));
       } else {
         VisitForStackValue(property->obj());
         VisitForStackValue(property->key());
       }
       break;
+    case NAMED_SUPER_PROPERTY:
+    case KEYED_SUPER_PROPERTY:
+      UNREACHABLE();
+      break;
   }
 
   // For compound assignments we need another deoptimization point after the
   // variable/property load.
   if (expr->is_compound()) {
     {
       AccumulatorValueContext context(this);
       switch (assign_type) {
         case VARIABLE:
           EmitVariableLoad(expr->target()->AsVariableProxy());
           PrepareForBailout(expr->target(), BailoutState::TOS_REGISTER);
           break;
         case NAMED_PROPERTY:
           EmitNamedPropertyLoad(property);
           PrepareForBailoutForId(property->LoadId(),
                                  BailoutState::TOS_REGISTER);
           break;
-        case NAMED_SUPER_PROPERTY:
-          EmitNamedSuperPropertyLoad(property);
-          PrepareForBailoutForId(property->LoadId(),
-                                 BailoutState::TOS_REGISTER);
-          break;
-        case KEYED_SUPER_PROPERTY:
-          EmitKeyedSuperPropertyLoad(property);
-          PrepareForBailoutForId(property->LoadId(),
-                                 BailoutState::TOS_REGISTER);
-          break;
         case KEYED_PROPERTY:
           EmitKeyedPropertyLoad(property);
           PrepareForBailoutForId(property->LoadId(),
                                  BailoutState::TOS_REGISTER);
           break;
+        case NAMED_SUPER_PROPERTY:
+        case KEYED_SUPER_PROPERTY:
+          UNREACHABLE();
+          break;
       }
     }
 
     Token::Value op = expr->binary_op();
     PushOperand(r2);  // Left operand goes on the stack.
     VisitForAccumulatorValue(expr->value());
 
     AccumulatorValueContext context(this);
     if (ShouldInlineSmiCase(op)) {
       EmitInlineSmiBinaryOp(expr->binary_operation(), op, expr->target(),
@@ skipping 16 matching lines @@
       VariableProxy* proxy = expr->target()->AsVariableProxy();
       EmitVariableAssignment(proxy->var(), expr->op(), expr->AssignmentSlot(),
                              proxy->hole_check_mode());
       PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
       context()->Plug(r2);
       break;
     }
     case NAMED_PROPERTY:
       EmitNamedPropertyAssignment(expr);
       break;
-    case NAMED_SUPER_PROPERTY:
-      EmitNamedSuperPropertyStore(property);
-      context()->Plug(r2);
-      break;
-    case KEYED_SUPER_PROPERTY:
-      EmitKeyedSuperPropertyStore(property);
-      context()->Plug(r2);
-      break;
     case KEYED_PROPERTY:
       EmitKeyedPropertyAssignment(expr);
       break;
+    case NAMED_SUPER_PROPERTY:
+    case KEYED_SUPER_PROPERTY:
+      UNREACHABLE();
+      break;
   }
 }
 
 void FullCodeGenerator::VisitYield(Yield* expr) {
   // Resumable functions are not supported.
   UNREACHABLE();
 }
 
 void FullCodeGenerator::PushOperands(Register reg1, Register reg2) {
   OperandStackDepthIncrement(2);
@@ skipping 203 matching lines @@
       break;
     }
     case NAMED_PROPERTY: {
       PushOperand(r2);  // Preserve value.
       VisitForAccumulatorValue(prop->obj());
       __ Move(StoreDescriptor::ReceiverRegister(), r2);
       PopOperand(StoreDescriptor::ValueRegister());  // Restore value.
       CallStoreIC(slot, prop->key()->AsLiteral()->value());
       break;
     }
-    case NAMED_SUPER_PROPERTY: {
-      PushOperand(r2);
-      VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
-      VisitForAccumulatorValue(
-          prop->obj()->AsSuperPropertyReference()->home_object());
-      // stack: value, this; r2: home_object
-      Register scratch = r4;
-      Register scratch2 = r5;
-      __ LoadRR(scratch, result_register());              // home_object
-      __ LoadP(r2, MemOperand(sp, kPointerSize));         // value
-      __ LoadP(scratch2, MemOperand(sp, 0));              // this
-      __ StoreP(scratch2, MemOperand(sp, kPointerSize));  // this
-      __ StoreP(scratch, MemOperand(sp, 0));              // home_object
-      // stack: this, home_object; r2: value
-      EmitNamedSuperPropertyStore(prop);
-      break;
-    }
-    case KEYED_SUPER_PROPERTY: {
-      PushOperand(r2);
-      VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
-      VisitForStackValue(
-          prop->obj()->AsSuperPropertyReference()->home_object());
-      VisitForAccumulatorValue(prop->key());
-      Register scratch = r4;
-      Register scratch2 = r5;
-      __ LoadP(scratch2, MemOperand(sp, 2 * kPointerSize));  // value
-      // stack: value, this, home_object; r3: key, r6: value
-      __ LoadP(scratch, MemOperand(sp, kPointerSize));  // this
-      __ StoreP(scratch, MemOperand(sp, 2 * kPointerSize));
-      __ LoadP(scratch, MemOperand(sp, 0));  // home_object
-      __ StoreP(scratch, MemOperand(sp, kPointerSize));
-      __ StoreP(r2, MemOperand(sp, 0));
-      __ Move(r2, scratch2);
-      // stack: this, home_object, key; r2: value.
-      EmitKeyedSuperPropertyStore(prop);
-      break;
-    }
     case KEYED_PROPERTY: {
       PushOperand(r2);  // Preserve value.
       VisitForStackValue(prop->obj());
       VisitForAccumulatorValue(prop->key());
       __ Move(StoreDescriptor::NameRegister(), r2);
       PopOperands(StoreDescriptor::ValueRegister(),
                   StoreDescriptor::ReceiverRegister());
       CallKeyedStoreIC(slot);
       break;
     }
+    case NAMED_SUPER_PROPERTY:
+    case KEYED_SUPER_PROPERTY:
+      UNREACHABLE();
+      break;
   }
   context()->Plug(r2);
 }
 
 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot(
     Variable* var, MemOperand location) {
   __ StoreP(result_register(), location);
   if (var->IsContextSlot()) {
     // RecordWrite may destroy all its register arguments.
     __ LoadRR(r5, result_register());
@@ skipping 68 matching lines @@
   DCHECK(prop != NULL);
   DCHECK(prop->key()->IsLiteral());
 
   PopOperand(StoreDescriptor::ReceiverRegister());
   CallStoreIC(expr->AssignmentSlot(), prop->key()->AsLiteral()->value());
 
   PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
   context()->Plug(r2);
 }
 
-void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) {
-  // Assignment to named property of super.
-  // r2 : value
-  // stack : receiver ('this'), home_object
-  DCHECK(prop != NULL);
-  Literal* key = prop->key()->AsLiteral();
-  DCHECK(key != NULL);
-
-  PushOperand(key->value());
-  PushOperand(r2);
-  CallRuntimeWithOperands((is_strict(language_mode())
-                               ? Runtime::kStoreToSuper_Strict
-                               : Runtime::kStoreToSuper_Sloppy));
-}
-
-void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) {
-  // Assignment to named property of super.
-  // r2 : value
-  // stack : receiver ('this'), home_object, key
-  DCHECK(prop != NULL);
-
-  PushOperand(r2);
-  CallRuntimeWithOperands((is_strict(language_mode())
-                               ? Runtime::kStoreKeyedToSuper_Strict
-                               : Runtime::kStoreKeyedToSuper_Sloppy));
-}
-
 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
   // Assignment to a property, using a keyed store IC.
   PopOperands(StoreDescriptor::ReceiverRegister(),
               StoreDescriptor::NameRegister());
   DCHECK(StoreDescriptor::ValueRegister().is(r2));
 
   CallKeyedStoreIC(expr->AssignmentSlot());
 
   PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
   context()->Plug(r2);
@@ skipping 27 matching lines @@
     // Push the target function under the receiver.
     __ LoadP(r1, MemOperand(sp, 0));
     PushOperand(r1);
     __ StoreP(r2, MemOperand(sp, kPointerSize));
     convert_mode = ConvertReceiverMode::kNotNullOrUndefined;
   }
 
   EmitCall(expr, convert_mode);
 }
 
-void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) {
-  Expression* callee = expr->expression();
-  DCHECK(callee->IsProperty());
-  Property* prop = callee->AsProperty();
-  DCHECK(prop->IsSuperAccess());
-  SetExpressionPosition(prop);
-
-  Literal* key = prop->key()->AsLiteral();
-  DCHECK(!key->value()->IsSmi());
-  // Load the function from the receiver.
-  const Register scratch = r3;
-  SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
-  VisitForAccumulatorValue(super_ref->home_object());
-  __ LoadRR(scratch, r2);
-  VisitForAccumulatorValue(super_ref->this_var());
-  PushOperands(scratch, r2, r2, scratch);
-  PushOperand(key->value());
-
-  // Stack here:
-  //  - home_object
-  //  - this (receiver)
-  //  - this (receiver) <-- LoadFromSuper will pop here and below.
-  //  - home_object
-  //  - key
-  CallRuntimeWithOperands(Runtime::kLoadFromSuper);
-  PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER);
-
-  // Replace home_object with target function.
-  __ StoreP(r2, MemOperand(sp, kPointerSize));
-
-  // Stack here:
-  // - target function
-  // - this (receiver)
-  EmitCall(expr);
-}
-
 // Code common for calls using the IC.
 void FullCodeGenerator::EmitKeyedCallWithLoadIC(Call* expr, Expression* key) {
   // Load the key.
   VisitForAccumulatorValue(key);
 
   Expression* callee = expr->expression();
 
   // Load the function from the receiver.
   DCHECK(callee->IsProperty());
   __ LoadP(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
   __ Move(LoadDescriptor::NameRegister(), r2);
   EmitKeyedPropertyLoad(callee->AsProperty());
   PrepareForBailoutForId(callee->AsProperty()->LoadId(),
                          BailoutState::TOS_REGISTER);
 
   // Push the target function under the receiver.
   __ LoadP(ip, MemOperand(sp, 0));
   PushOperand(ip);
   __ StoreP(r2, MemOperand(sp, kPointerSize));
 
   EmitCall(expr, ConvertReceiverMode::kNotNullOrUndefined);
 }
 
-void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) {
-  Expression* callee = expr->expression();
-  DCHECK(callee->IsProperty());
-  Property* prop = callee->AsProperty();
-  DCHECK(prop->IsSuperAccess());
-
-  SetExpressionPosition(prop);
-  // Load the function from the receiver.
-  const Register scratch = r3;
-  SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
-  VisitForAccumulatorValue(super_ref->home_object());
-  __ LoadRR(scratch, r2);
-  VisitForAccumulatorValue(super_ref->this_var());
-  PushOperands(scratch, r2, r2, scratch);
-  VisitForStackValue(prop->key());
-
-  // Stack here:
-  //  - home_object
-  //  - this (receiver)
-  //  - this (receiver) <-- LoadKeyedFromSuper will pop here and below.
-  //  - home_object
-  //  - key
-  CallRuntimeWithOperands(Runtime::kLoadKeyedFromSuper);
-  PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER);
-
-  // Replace home_object with target function.
-  __ StoreP(r2, MemOperand(sp, kPointerSize));
-
-  // Stack here:
-  // - target function
-  // - this (receiver)
-  EmitCall(expr);
-}
-
 void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
   // Load the arguments.
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
   for (int i = 0; i < arg_count; i++) {
     VisitForStackValue(args->at(i));
   }
 
   PrepareForBailoutForId(expr->CallId(), BailoutState::NO_REGISTERS);
   SetCallPosition(expr, expr->tail_call_mode());
@@ skipping 489 matching lines @@
     }
     switch (assign_type) {
       case NAMED_PROPERTY: {
         // Put the object both on the stack and in the register.
         VisitForStackValue(prop->obj());
         __ LoadP(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
         EmitNamedPropertyLoad(prop);
         break;
       }
 
-      case NAMED_SUPER_PROPERTY: {
-        VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
-        VisitForAccumulatorValue(
-            prop->obj()->AsSuperPropertyReference()->home_object());
-        const Register scratch = r3;
-        __ LoadP(scratch, MemOperand(sp, 0));  // this
-        PushOperands(result_register(), scratch, result_register());
-        EmitNamedSuperPropertyLoad(prop);
-        break;
-      }
-
-      case KEYED_SUPER_PROPERTY: {
-        VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
-        VisitForStackValue(
-            prop->obj()->AsSuperPropertyReference()->home_object());
-        VisitForAccumulatorValue(prop->key());
-        const Register scratch1 = r3;
-        const Register scratch2 = r4;
-        __ LoadP(scratch1, MemOperand(sp, 1 * kPointerSize));  // this
-        __ LoadP(scratch2, MemOperand(sp, 0 * kPointerSize));  // home object
-        PushOperands(result_register(), scratch1, scratch2, result_register());
-        EmitKeyedSuperPropertyLoad(prop);
-        break;
-      }
-
       case KEYED_PROPERTY: {
         VisitForStackValue(prop->obj());
         VisitForStackValue(prop->key());
         __ LoadP(LoadDescriptor::ReceiverRegister(),
                  MemOperand(sp, 1 * kPointerSize));
         __ LoadP(LoadDescriptor::NameRegister(), MemOperand(sp, 0));
         EmitKeyedPropertyLoad(prop);
         break;
       }
 
+      case NAMED_SUPER_PROPERTY:
+      case KEYED_SUPER_PROPERTY:
       case VARIABLE:
         UNREACHABLE();
     }
   }
 
   // We need a second deoptimization point after loading the value
   // in case evaluating the property load my have a side effect.
   if (assign_type == VARIABLE) {
     PrepareForBailout(expr->expression(), BailoutState::TOS_REGISTER);
   } else {
@@ 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(r2);
             break;
           case NAMED_PROPERTY:
             __ StoreP(r2, MemOperand(sp, kPointerSize));
             break;
-          case NAMED_SUPER_PROPERTY:
-            __ StoreP(r2, MemOperand(sp, 2 * kPointerSize));
-            break;
           case KEYED_PROPERTY:
             __ StoreP(r2, MemOperand(sp, 2 * kPointerSize));
             break;
+          case NAMED_SUPER_PROPERTY:
           case KEYED_SUPER_PROPERTY:
-            __ StoreP(r2, MemOperand(sp, 3 * kPointerSize));
+            UNREACHABLE();
             break;
         }
       }
     }
 
     Register scratch1 = r3;
     Register scratch2 = r4;
     __ LoadSmiLiteral(scratch1, Smi::FromInt(count_value));
     __ AddP(scratch2, r2, scratch1);
     __ LoadOnConditionP(nooverflow, r2, scratch2);
@@ skipping 14 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:
           PushOperand(r2);
           break;
         case NAMED_PROPERTY:
           __ StoreP(r2, MemOperand(sp, kPointerSize));
           break;
-        case NAMED_SUPER_PROPERTY:
-          __ StoreP(r2, MemOperand(sp, 2 * kPointerSize));
-          break;
         case KEYED_PROPERTY:
           __ StoreP(r2, MemOperand(sp, 2 * kPointerSize));
           break;
+        case NAMED_SUPER_PROPERTY:
         case KEYED_SUPER_PROPERTY:
-          __ StoreP(r2, MemOperand(sp, 3 * kPointerSize));
+          UNREACHABLE();
           break;
       }
     }
   }
 
   __ bind(&stub_call);
   __ LoadRR(r3, r2);
   __ LoadSmiLiteral(r2, Smi::FromInt(count_value));
 
   SetExpressionPosition(expr);
@@ skipping 36 matching lines @@
       PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(r2);
       }
       break;
     }
-    case NAMED_SUPER_PROPERTY: {
-      EmitNamedSuperPropertyStore(prop);
-      PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
-      if (expr->is_postfix()) {
-        if (!context()->IsEffect()) {
-          context()->PlugTOS();
-        }
-      } else {
-        context()->Plug(r2);
-      }
-      break;
-    }
-    case KEYED_SUPER_PROPERTY: {
-      EmitKeyedSuperPropertyStore(prop);
-      PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
-      if (expr->is_postfix()) {
-        if (!context()->IsEffect()) {
-          context()->PlugTOS();
-        }
-      } else {
-        context()->Plug(r2);
-      }
-      break;
-    }
     case KEYED_PROPERTY: {
       PopOperands(StoreDescriptor::ReceiverRegister(),
                   StoreDescriptor::NameRegister());
       CallKeyedStoreIC(expr->CountSlot());
       PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(r2);
       }
       break;
     }
+    case NAMED_SUPER_PROPERTY:
+    case KEYED_SUPER_PROPERTY:
+      UNREACHABLE();
+      break;
   }
 }
 
 void FullCodeGenerator::EmitLiteralCompareTypeof(Expression* expr,
                                                  Expression* sub_expr,
                                                  Handle<String> check) {
   Label materialize_true, materialize_false;
   Label* if_true = NULL;
   Label* if_false = NULL;
   Label* fall_through = NULL;
@@ skipping 278 matching lines @@
   DCHECK(kOSRBranchInstruction == br_instr);
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OnStackReplacement()->entry());
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_S390