[fullcodegen] Add support for %_GetSuperConstructor.

src/full-codegen/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.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 3436 matching lines @@
 
   __ AssertString(x0);
 
   __ Ldr(x10, FieldMemOperand(x0, String::kHashFieldOffset));
   __ IndexFromHash(x10, x0);
 
   context()->Plug(x0);
 }
 
 
+void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK_EQ(1, args->length());
+  VisitForAccumulatorValue(args->at(0));
+  __ AssertFunction(x0);
+  __ Ldr(x0, FieldMemOperand(x0, HeapObject::kMapOffset));
+  __ Ldr(x0, FieldMemOperand(x0, Map::kPrototypeOffset));
+  context()->Plug(x0);
+}
+
+
 void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) {
   ASM_LOCATION("FullCodeGenerator::EmitFastOneByteArrayJoin");
 
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
   VisitForStackValue(args->at(1));
   VisitForAccumulatorValue(args->at(0));
 
   Register array = x0;
   Register result = x0;
@@ skipping 1396 matching lines @@
   }
 
   return INTERRUPT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64