MIPS: Support for super assignments in for..in.

src/mips64/full-codegen-mips64.cc

Index: src/mips64/full-codegen-mips64.cc
diff --git a/src/mips64/full-codegen-mips64.cc b/src/mips64/full-codegen-mips64.cc
index ecb82c19a5118b1138f88289b0ca011e88299f3a..099e4313de094ba8b164189ab88409767a04b3d8 100644
--- a/src/mips64/full-codegen-mips64.cc
+++ b/src/mips64/full-codegen-mips64.cc
@@ -2489,16 +2489,8 @@ void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
 void FullCodeGenerator::EmitAssignment(Expression* expr) {
   DCHECK(expr->IsValidReferenceExpression());
 
-  // Left-hand side can only be a property, a global or a (parameter or local)
-  // slot.
-  enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY };
-  LhsKind assign_type = VARIABLE;
   Property* prop = expr->AsProperty();
-  if (prop != NULL) {
-    assign_type = (prop->key()->IsPropertyName())
-        ? NAMED_PROPERTY
-        : KEYED_PROPERTY;
-  }
+  LhsKind assign_type = GetAssignType(prop);
 
   switch (assign_type) {
     case VARIABLE: {
@@ -2517,6 +2509,42 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
       CallStoreIC();
       break;
     }
+    case NAMED_SUPER_PROPERTY: {
+      __ Push(v0);
+      VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+      EmitLoadHomeObject(prop->obj()->AsSuperReference());
+      // stack: value, this; v0: home_object
+      Register scratch = a2;
+      Register scratch2 = a3;
+      __ mov(scratch, result_register());             // home_object
+      __ lw(v0, MemOperand(sp, kPointerSize));        // value
+      __ lw(scratch2, MemOperand(sp, 0));             // this
+      __ sw(scratch2, MemOperand(sp, kPointerSize));  // this
+      __ sw(scratch, MemOperand(sp, 0));              // home_object
+      // stack: this, home_object; v0: value
+      EmitNamedSuperPropertyStore(prop);
+      break;
+    }
+    case KEYED_SUPER_PROPERTY: {
+      __ Push(v0);
+      VisitForStackValue(prop->obj()->AsSuperReference()->this_var());
+      EmitLoadHomeObject(prop->obj()->AsSuperReference());
+      __ Push(result_register());
+      VisitForAccumulatorValue(prop->key());
+      Register scratch = a2;
+      Register scratch2 = a3;
+      __ lw(scratch2, MemOperand(sp, 2 * kPointerSize));  // value
+      // stack: value, this, home_object; v0: key, a3: value
+      __ lw(scratch, MemOperand(sp, kPointerSize));  // this
+      __ sw(scratch, MemOperand(sp, 2 * kPointerSize));
+      __ lw(scratch, MemOperand(sp, 0));  // home_object
+      __ sw(scratch, MemOperand(sp, kPointerSize));
+      __ sw(v0, MemOperand(sp, 0));
+      __ Move(v0, scratch2);
+      // stack: this, home_object, key; v0: value.
+      EmitKeyedSuperPropertyStore(prop);
+      break;
+    }
     case KEYED_PROPERTY: {
       __ push(result_register());  // Preserve value.
       VisitForStackValue(prop->obj());