Keyed stores to super where key is a name.

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 1844 matching lines @@
     context()->Plug(x0);
   }
 }
 
 
 void FullCodeGenerator::VisitAssignment(Assignment* expr) {
   DCHECK(expr->target()->IsValidReferenceExpression());
 
   Comment cmnt(masm_, "[ Assignment");
 
-  // Left-hand side can only be a property, a global or a (parameter or local)
-  // slot.
-  enum LhsKind {
-    VARIABLE,
-    NAMED_PROPERTY,
-    KEYED_PROPERTY,
-    NAMED_SUPER_PROPERTY
-  };
-  LhsKind assign_type = VARIABLE;
   Property* property = expr->target()->AsProperty();
-  if (property != NULL) {
-    assign_type = (property->key()->IsPropertyName())
-                      ? (property->IsSuperAccess() ? NAMED_SUPER_PROPERTY
-                                                   : NAMED_PROPERTY)
-                      : KEYED_PROPERTY;
-  }
+  LhsKind assign_type = GetAssignType(property);
 
   // Evaluate LHS expression.
   switch (assign_type) {
     case VARIABLE:
       // Nothing to do here.
       break;
     case NAMED_PROPERTY:
       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());
       __ 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());
+      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;
     case KEYED_PROPERTY:
       if (expr->is_compound()) {
         VisitForStackValue(property->obj());
         VisitForStackValue(property->key());
         __ Peek(LoadDescriptor::ReceiverRegister(), 1 * kPointerSize);
         __ Peek(LoadDescriptor::NameRegister(), 0);
       } else {
         VisitForStackValue(property->obj());
         VisitForStackValue(property->key());
       }
@@ skipping 10 matching lines @@
           PrepareForBailout(expr->target(), TOS_REG);
           break;
         case NAMED_PROPERTY:
           EmitNamedPropertyLoad(property);
           PrepareForBailoutForId(property->LoadId(), TOS_REG);
           break;
         case NAMED_SUPER_PROPERTY:
           EmitNamedSuperPropertyLoad(property);
           PrepareForBailoutForId(property->LoadId(), TOS_REG);
           break;
+        case KEYED_SUPER_PROPERTY:
+          EmitKeyedSuperPropertyLoad(property);
+          PrepareForBailoutForId(property->LoadId(), TOS_REG);
+          break;
         case KEYED_PROPERTY:
           EmitKeyedPropertyLoad(property);
           PrepareForBailoutForId(property->LoadId(), TOS_REG);
           break;
       }
     }
 
     Token::Value op = expr->binary_op();
     __ Push(x0);  // Left operand goes on the stack.
     VisitForAccumulatorValue(expr->value());
@@ skipping 30 matching lines @@
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       context()->Plug(x0);
       break;
     case NAMED_PROPERTY:
       EmitNamedPropertyAssignment(expr);
       break;
     case NAMED_SUPER_PROPERTY:
       EmitNamedSuperPropertyStore(property);
       context()->Plug(x0);
       break;
+    case KEYED_SUPER_PROPERTY:
+      EmitKeyedSuperPropertyStore(property);
+      context()->Plug(x0);
+      break;
     case KEYED_PROPERTY:
       EmitKeyedPropertyAssignment(expr);
       break;
   }
 }
 
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Literal* key = prop->key()->AsLiteral();
@@ skipping 311 matching lines @@
 
 
 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) {
   // Assignment to named property of super.
   // x0 : value
   // stack : receiver ('this'), home_object
   DCHECK(prop != NULL);
   Literal* key = prop->key()->AsLiteral();
   DCHECK(key != NULL);
 
+  __ Push(key->value());
   __ Push(x0);
-  __ Push(key->value());
   __ CallRuntime((strict_mode() == STRICT ? Runtime::kStoreToSuper_Strict
                                           : Runtime::kStoreToSuper_Sloppy),
                  4);
 }
 
 
+void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) {
+  // Assignment to named property of super.
+  // x0 : value
+  // stack : receiver ('this'), home_object, key
+  DCHECK(prop != NULL);
+
+  __ Push(x0);
+  __ CallRuntime((strict_mode() == STRICT ? Runtime::kStoreKeyedToSuper_Strict
+                                          : Runtime::kStoreKeyedToSuper_Sloppy),
+                 4);
+}
+
+
 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
   ASM_LOCATION("FullCodeGenerator::EmitKeyedPropertyAssignment");
   // Assignment to a property, using a keyed store IC.
 
   // Record source code position before IC call.
   SetSourcePosition(expr->position());
   // TODO(all): Could we pass this in registers rather than on the stack?
   __ Pop(StoreDescriptor::NameRegister(), StoreDescriptor::ReceiverRegister());
   DCHECK(StoreDescriptor::ValueRegister().is(x0));
 
@@ skipping 1753 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,
-    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())
-            ? (prop->IsSuperAccess() ? NAMED_SUPER_PROPERTY : NAMED_PROPERTY)
-            : KEYED_PROPERTY;
-  }
+  LhsKind assign_type = GetAssignType(prop);
 
   // 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(xzr);
     }
-    if (assign_type == NAMED_PROPERTY) {
-      // Put the object both on the stack and in the register.
-      VisitForStackValue(prop->obj());
-      __ Peek(LoadDescriptor::ReceiverRegister(), 0);
-      EmitNamedPropertyLoad(prop);
-    } else if (assign_type == NAMED_SUPER_PROPERTY) {
-      VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-      EmitLoadHomeObject(prop->obj()->AsSuperReference());
-      __ Push(result_register());
-      const Register scratch = x10;
-      __ Peek(scratch, kPointerSize);
-      __ Push(scratch, result_register());
-      EmitNamedSuperPropertyLoad(prop);
-    } else {
-      // KEYED_PROPERTY
-      VisitForStackValue(prop->obj());
-      VisitForStackValue(prop->key());
-      __ Peek(LoadDescriptor::ReceiverRegister(), 1 * kPointerSize);
-      __ Peek(LoadDescriptor::NameRegister(), 0);
-      EmitKeyedPropertyLoad(prop);
+    switch (assign_type) {
+      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());
+        __ 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());
+        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;
+      }
+
+      case KEYED_PROPERTY: {
+        VisitForStackValue(prop->obj());
+        VisitForStackValue(prop->key());
+        __ Peek(LoadDescriptor::ReceiverRegister(), 1 * kPointerSize);
+        __ Peek(LoadDescriptor::NameRegister(), 0);
+        EmitKeyedPropertyLoad(prop);
+        break;
+      }
+
+      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(), TOS_REG);
   } else {
     PrepareForBailoutForId(prop->LoadId(), TOS_REG);
   }
@@ skipping 19 matching lines @@
             break;
           case NAMED_PROPERTY:
             __ Poke(x0, kPointerSize);
             break;
           case NAMED_SUPER_PROPERTY:
             __ Poke(x0, kPointerSize * 2);
             break;
           case KEYED_PROPERTY:
             __ Poke(x0, kPointerSize * 2);
             break;
+          case KEYED_SUPER_PROPERTY:
+            __ Poke(x0, kPointerSize * 3);
+            break;
         }
       }
     }
 
     __ Adds(x0, x0, Smi::FromInt(count_value));
     __ B(vc, &done);
     // Call stub. Undo operation first.
     __ Sub(x0, x0, Smi::FromInt(count_value));
     __ B(&stub_call);
     __ Bind(&slow);
@@ skipping 13 matching lines @@
           break;
         case NAMED_PROPERTY:
           __ Poke(x0, kXRegSize);
           break;
         case NAMED_SUPER_PROPERTY:
           __ Poke(x0, 2 * kXRegSize);
           break;
         case KEYED_PROPERTY:
           __ Poke(x0, 2 * kXRegSize);
           break;
+        case KEYED_SUPER_PROPERTY:
+          __ Poke(x0, 3 * kXRegSize);
+          break;
       }
     }
   }
 
   __ Bind(&stub_call);
   __ Mov(x1, x0);
   __ Mov(x0, Smi::FromInt(count_value));
 
   // Record position before stub call.
   SetSourcePosition(expr->position());
@@ skipping 48 matching lines @@
       EmitNamedSuperPropertyStore(prop);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(x0);
       }
       break;
     }
+    case KEYED_SUPER_PROPERTY: {
+      EmitKeyedSuperPropertyStore(prop);
+      if (expr->is_postfix()) {
+        if (!context()->IsEffect()) {
+          context()->PlugTOS();
+        }
+      } else {
+        context()->Plug(x0);
+      }
+      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 830 matching lines @@
   return previous_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64