Remove separate construct stub for new.target users.

src/deoptimizer.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.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/codegen.h"
 #include "src/cpu-profiler.h"
 #include "src/deoptimizer.h"
@@ skipping 1212 matching lines @@
 
   // Number of incoming arguments.
   output_offset -= kPointerSize;
   value = reinterpret_cast<intptr_t>(Smi::FromInt(height - 1));
   output_frame->SetFrameSlot(output_offset, value);
   DebugPrintOutputSlot(value, frame_index, output_offset, "argc ");
   if (trace_scope_ != nullptr) {
     PrintF(trace_scope_->file(), "(%d)\n", height - 1);
   }
 
+  // The original constructor.
+  output_offset -= kPointerSize;
+  value = reinterpret_cast<intptr_t>(isolate_->heap()->undefined_value());
+  output_frame->SetFrameSlot(output_offset, value);
+  DebugPrintOutputSlot(value, frame_index, output_offset, "new.target\n");
+
   // The newly allocated object was passed as receiver in the artificial
   // constructor stub environment created by HEnvironment::CopyForInlining().
   output_offset -= kPointerSize;
   value = output_frame->GetFrameSlot(output_frame_size - kPointerSize);
   output_frame->SetFrameSlot(output_offset, value);
   DebugPrintOutputSlot(value, frame_index, output_offset,
                        "allocated receiver\n");
 
   CHECK_EQ(0u, output_offset);
 
@@ skipping 2130 matching lines @@
       DCHECK(value_info->IsMaterializedObject());
 
       value_info->value_ =
           Handle<Object>(previously_materialized_objects->get(i), isolate_);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8