[es6] Super call in arrows and eval

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index c81f346d13cc86a87c4fcb95d105ce9f673f68b0..56e3a5fc44731b5c77d3f6e2dd43203189268a8d 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -251,6 +251,24 @@ void FullCodeGenerator::Generate() {
     }
   }
 
+  // Possibly set up a local binding to the this function which is used in
+  // derived constructors with super calls.
+  Variable* this_function_var = scope()->this_function_var();
+  if (this_function_var != nullptr) {
+    Comment cmnt(masm_, "[ This function");
+    SetVar(this_function_var, a1, a2, a3);
+  }
+
+  Variable* new_target_var = scope()->new_target_var();
+  if (new_target_var != nullptr) {
+    Comment cmnt(masm_, "[ new.target");
+    // new.target is parameter -2.
+    int offset = 2 * kPointerSize +
+                 (info_->scope()->num_parameters() + 1) * kPointerSize;
+    __ lw(v0, MemOperand(fp, offset));
+    SetVar(new_target_var, v0, a2, a3);
+  }
+
   Variable* home_object_var = scope()->home_object_var();
   if (home_object_var != nullptr) {
     __ Push(a1);
@@ -1988,9 +2006,10 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
       }
       break;
     case NAMED_SUPER_PROPERTY:
-      VisitForStackValue(property->obj()->AsSuperReference()->this_var());
+      VisitForStackValue(
+          property->obj()->AsSuperPropertyReference()->this_var());
       VisitForAccumulatorValue(
-          property->obj()->AsSuperReference()->home_object_var());
+          property->obj()->AsSuperPropertyReference()->home_object_var());
       __ Push(result_register());
       if (expr->is_compound()) {
         const Register scratch = a1;
@@ -2000,9 +2019,10 @@ void FullCodeGenerator::VisitAssignment(Assignment* expr) {
       break;
     case KEYED_SUPER_PROPERTY: {
       const Register scratch = a1;
-      VisitForStackValue(property->obj()->AsSuperReference()->this_var());
+      VisitForStackValue(
+          property->obj()->AsSuperPropertyReference()->this_var());
       VisitForAccumulatorValue(
-          property->obj()->AsSuperReference()->home_object_var());
+          property->obj()->AsSuperPropertyReference()->home_object_var());
       __ Move(scratch, result_register());
       VisitForAccumulatorValue(property->key());
       __ Push(scratch, result_register());
@@ -2636,9 +2656,9 @@ void FullCodeGenerator::EmitAssignment(Expression* expr,
     }
     case NAMED_SUPER_PROPERTY: {
       __ Push(v0);
-      VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+      VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
       VisitForAccumulatorValue(
-          prop->obj()->AsSuperReference()->home_object_var());
+          prop->obj()->AsSuperPropertyReference()->home_object_var());
       // stack: value, this; v0: home_object
       Register scratch = a2;
       Register scratch2 = a3;
@@ -2653,8 +2673,9 @@ void FullCodeGenerator::EmitAssignment(Expression* expr,
     }
     case KEYED_SUPER_PROPERTY: {
       __ Push(v0);
-      VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
-      VisitForStackValue(prop->obj()->AsSuperReference()->home_object_var());
+      VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
+      VisitForStackValue(
+          prop->obj()->AsSuperPropertyReference()->home_object_var());
       VisitForAccumulatorValue(prop->key());
       Register scratch = a2;
       Register scratch2 = a3;
@@ -2883,8 +2904,9 @@ void FullCodeGenerator::VisitProperty(Property* expr) {
       __ Move(LoadDescriptor::ReceiverRegister(), v0);
       EmitNamedPropertyLoad(expr);
     } else {
-      VisitForStackValue(expr->obj()->AsSuperReference()->this_var());
-      VisitForStackValue(expr->obj()->AsSuperReference()->home_object_var());
+      VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var());
+      VisitForStackValue(
+          expr->obj()->AsSuperPropertyReference()->home_object_var());
       EmitNamedSuperPropertyLoad(expr);
     }
   } else {
@@ -2895,8 +2917,9 @@ void FullCodeGenerator::VisitProperty(Property* expr) {
       __ pop(LoadDescriptor::ReceiverRegister());
       EmitKeyedPropertyLoad(expr);
     } else {
-      VisitForStackValue(expr->obj()->AsSuperReference()->this_var());
-      VisitForStackValue(expr->obj()->AsSuperReference()->home_object_var());
+      VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var());
+      VisitForStackValue(
+          expr->obj()->AsSuperPropertyReference()->home_object_var());
       VisitForStackValue(expr->key());
       EmitKeyedSuperPropertyLoad(expr);
     }
@@ -2958,7 +2981,7 @@ void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) {
   DCHECK(!key->value()->IsSmi());
   // Load the function from the receiver.
   const Register scratch = a1;
-  SuperReference* super_ref = prop->obj()->AsSuperReference();
+  SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
   VisitForAccumulatorValue(super_ref->home_object_var());
   __ mov(scratch, v0);
   VisitForAccumulatorValue(super_ref->this_var());
@@ -3016,7 +3039,7 @@ void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) {
   SetSourcePosition(prop->position());
   // Load the function from the receiver.
   const Register scratch = a1;
-  SuperReference* super_ref = prop->obj()->AsSuperReference();
+  SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
   VisitForAccumulatorValue(super_ref->home_object_var());
   __ Move(scratch, v0);
   VisitForAccumulatorValue(super_ref->this_var());
@@ -3096,15 +3119,8 @@ void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) {
 }
 
 
-void FullCodeGenerator::EmitLoadSuperConstructor() {
-  __ lw(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
-  __ Push(a0);
-  __ CallRuntime(Runtime::kGetPrototype, 1);
-}
-
-
 void FullCodeGenerator::EmitInitializeThisAfterSuper(
-    SuperReference* super_ref, FeedbackVectorICSlot slot) {
+    SuperCallReference* super_ref, FeedbackVectorICSlot slot) {
   Variable* this_var = super_ref->this_var()->var();
   GetVar(a1, this_var);
   __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
@@ -3262,7 +3278,7 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   // Push constructor on the stack.  If it's not a function it's used as
   // receiver for CALL_NON_FUNCTION, otherwise the value on the stack is
   // ignored.
-  DCHECK(!expr->expression()->IsSuperReference());
+  DCHECK(!expr->expression()->IsSuperPropertyReference());
   VisitForStackValue(expr->expression());
 
   // Push the arguments ("left-to-right") on the stack.
@@ -3298,11 +3314,14 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
 
 
 void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
-  Variable* new_target_var = scope()->DeclarationScope()->new_target_var();
-  GetVar(result_register(), new_target_var);
-  __ Push(result_register());
+  SuperCallReference* super_call_ref =
+      expr->expression()->AsSuperCallReference();
+  DCHECK_NOT_NULL(super_call_ref);
+
+  VariableProxy* new_target_proxy = super_call_ref->new_target_var();
+  VisitForStackValue(new_target_proxy);
 
-  EmitLoadSuperConstructor();
+  EmitLoadSuperConstructor(super_call_ref);
   __ push(result_register());
 
   // Push the arguments ("left-to-right") on the stack.
@@ -3340,8 +3359,7 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
 
   RecordJSReturnSite(expr);
 
-  EmitInitializeThisAfterSuper(expr->expression()->AsSuperReference(),
-                               expr->CallFeedbackICSlot());
+  EmitInitializeThisAfterSuper(super_call_ref, expr->CallFeedbackICSlot());
   context()->Plug(v0);
 }
 
@@ -4227,11 +4245,15 @@ void FullCodeGenerator::EmitCallFunction(CallRuntime* expr) {
 
 
 void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
-  Variable* new_target_var = scope()->DeclarationScope()->new_target_var();
-  GetVar(result_register(), new_target_var);
-  __ Push(result_register());
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK(args->length() == 2);
 
-  EmitLoadSuperConstructor();
+  // new.target
+  VisitForStackValue(args->at(0));
+
+  // .this_function
+  VisitForStackValue(args->at(1));
+  __ CallRuntime(Runtime::kGetPrototype, 1);
   __ Push(result_register());
 
   // Check if the calling frame is an arguments adaptor frame.
@@ -4633,11 +4655,14 @@ void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) {
 
 void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
   // Assert: expr == CallRuntime("ReflectConstruct")
+  DCHECK_EQ(1, expr->arguments()->length());
   CallRuntime* call = expr->arguments()->at(0)->AsCallRuntime();
+
   ZoneList<Expression*>* args = call->arguments();
   DCHECK_EQ(3, args->length());
 
-  SuperReference* super_reference = args->at(0)->AsSuperReference();
+  SuperCallReference* super_call_ref = args->at(0)->AsSuperCallReference();
+  DCHECK_NOT_NULL(super_call_ref);
 
   // Load ReflectConstruct function
   EmitLoadJSRuntimeFunction(call);
@@ -4647,8 +4672,8 @@ void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
   __ push(at);
   __ sw(v0, MemOperand(sp, kPointerSize));
 
-  // Push super
-  EmitLoadSuperConstructor();
+  // Push super constructor
+  EmitLoadSuperConstructor(super_call_ref);
   __ Push(result_register());
 
   // Push arguments array
@@ -4665,7 +4690,7 @@ void FullCodeGenerator::EmitCallSuperWithSpread(CallRuntime* expr) {
   context()->DropAndPlug(1, v0);
 
   // TODO(mvstanton): with FLAG_vector_stores this needs a slot id.
-  EmitInitializeThisAfterSuper(super_reference);
+  EmitInitializeThisAfterSuper(super_call_ref);
 }
 
 
@@ -4890,9 +4915,9 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
       }
 
       case NAMED_SUPER_PROPERTY: {
-        VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+        VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
         VisitForAccumulatorValue(
-            prop->obj()->AsSuperReference()->home_object_var());
+            prop->obj()->AsSuperPropertyReference()->home_object_var());
         __ Push(result_register());
         const Register scratch = a1;
         __ lw(scratch, MemOperand(sp, kPointerSize));
@@ -4902,9 +4927,9 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
       }
 
       case KEYED_SUPER_PROPERTY: {
-        VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+        VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
         VisitForAccumulatorValue(
-            prop->obj()->AsSuperReference()->home_object_var());
+            prop->obj()->AsSuperPropertyReference()->home_object_var());
         const Register scratch = a1;
         const Register scratch1 = t0;
         __ Move(scratch, result_register());