new classes: implement correct check for uninitialized this in 'super()'

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index c9a5648aa1b9a9626bd7a29d4986f57b29c65a93..2da85c8a768552757b9222561ffe2faf9be5bf7e 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -3270,18 +3270,6 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
   EmitLoadSuperConstructor();
   __ push(result_register());
 
-  SuperReference* super_ref = expr->expression()->AsSuperReference();
-  Variable* this_var = super_ref->this_var()->var();
-
-  GetVar(r0, this_var);
-  __ CompareRoot(r0, Heap::kTheHoleValueRootIndex);
-  Label uninitialized_this;
-  __ b(eq, &uninitialized_this);
-  __ mov(r0, Operand(this_var->name()));
-  __ Push(r0);
-  __ CallRuntime(Runtime::kThrowReferenceError, 1);
-  __ bind(&uninitialized_this);
-
   // Push the arguments ("left-to-right") on the stack.
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
@@ -3317,6 +3305,17 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
 
   RecordJSReturnSite(expr);
 
+  SuperReference* super_ref = expr->expression()->AsSuperReference();
+  Variable* this_var = super_ref->this_var()->var();
+  GetVar(r1, this_var);
+  __ CompareRoot(r1, Heap::kTheHoleValueRootIndex);
+  Label uninitialized_this;
+  __ b(eq, &uninitialized_this);
+  __ mov(r0, Operand(this_var->name()));
+  __ Push(r0);
+  __ CallRuntime(Runtime::kThrowReferenceError, 1);
+  __ bind(&uninitialized_this);
+
   EmitVariableAssignment(this_var, Token::INIT_CONST);
   context()->Plug(r0);
 }