[fullcodegen] Add support for %_GetSuperConstructor.

src/full-codegen/mips64/full-codegen-mips64.cc

 // Copyright 2012 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_MIPS64
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 3740 matching lines @@
 
   __ AssertString(v0);
 
   __ lwu(v0, FieldMemOperand(v0, String::kHashFieldOffset));
   __ IndexFromHash(v0, v0);
 
   context()->Plug(v0);
 }
 
 
+void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK_EQ(1, args->length());
+  VisitForAccumulatorValue(args->at(0));
+  __ AssertFunction(v0);
+  __ ld(v0, FieldMemOperand(v0, HeapObject::kMapOffset));
+  __ ld(v0, FieldMemOperand(v0, Map::kPrototypeOffset));
+  context()->Plug(v0);
+}
+
+
 void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) {
   Label bailout, done, one_char_separator, long_separator,
       non_trivial_array, not_size_one_array, loop,
       empty_separator_loop, one_char_separator_loop,
       one_char_separator_loop_entry, long_separator_loop;
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
   VisitForStackValue(args->at(1));
   VisitForAccumulatorValue(args->at(0));
 
@@ skipping 1079 matching lines @@
          reinterpret_cast<uint64_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64