Unify deoptimizer for construct stub frames.

src/arm/deoptimizer-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 519 matching lines @@
   output_frame->SetPc(reinterpret_cast<intptr_t>(
       trampoline->instruction_start()));
   output_frame->SetState(Smi::FromInt(FullCodeGenerator::NO_REGISTERS));
   Code* notify_failure =
       isolate_->builtins()->builtin(Builtins::kNotifyStubFailure);
   output_frame->SetContinuation(
       reinterpret_cast<intptr_t>(notify_failure->entry()));
 }
 
 
-void Deoptimizer::DoComputeConstructStubFrame(TranslationIterator* iterator,
-                                              int frame_index) {
-  Builtins* builtins = isolate_->builtins();
-  Code* construct_stub = builtins->builtin(Builtins::kJSConstructStubGeneric);
-  JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next()));
-  unsigned height = iterator->Next();
-  unsigned height_in_bytes = height * kPointerSize;
-  if (FLAG_trace_deopt) {
-    PrintF("  translating construct stub => height=%d\n", height_in_bytes);
-  }
-
-  unsigned fixed_frame_size = 8 * kPointerSize;
-  unsigned output_frame_size = height_in_bytes + fixed_frame_size;
-
-  // Allocate and store the output frame description.
-  FrameDescription* output_frame =
-      new(output_frame_size) FrameDescription(output_frame_size, function);
-  output_frame->SetFrameType(StackFrame::CONSTRUCT);
-
-  // Construct stub can not be topmost or bottommost.
-  ASSERT(frame_index > 0 && frame_index < output_count_ - 1);
-  ASSERT(output_[frame_index] == NULL);
-  output_[frame_index] = output_frame;
-
-  // The top address of the frame is computed from the previous
-  // frame's top and this frame's size.
-  uint32_t top_address;
-  top_address = output_[frame_index - 1]->GetTop() - output_frame_size;
-  output_frame->SetTop(top_address);
-
-  // Compute the incoming parameter translation.
-  int parameter_count = height;
-  unsigned output_offset = output_frame_size;
-  for (int i = 0; i < parameter_count; ++i) {
-    output_offset -= kPointerSize;
-    DoTranslateCommand(iterator, frame_index, output_offset);
-  }
-
-  // Read caller's PC from the previous frame.
-  output_offset -= kPointerSize;
-  intptr_t callers_pc = output_[frame_index - 1]->GetPc();
-  output_frame->SetFrameSlot(output_offset, callers_pc);
-  if (FLAG_trace_deopt) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; caller's pc\n",
-           top_address + output_offset, output_offset, callers_pc);
-  }
-
-  // Read caller's FP from the previous frame, and set this frame's FP.
-  output_offset -= kPointerSize;
-  intptr_t value = output_[frame_index - 1]->GetFp();
-  output_frame->SetFrameSlot(output_offset, value);
-  intptr_t fp_value = top_address + output_offset;
-  output_frame->SetFp(fp_value);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; caller's fp\n",
-           fp_value, output_offset, value);
-  }
-
-  // The context can be gotten from the previous frame.
-  output_offset -= kPointerSize;
-  value = output_[frame_index - 1]->GetContext();
-  output_frame->SetFrameSlot(output_offset, value);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; context\n",
-           top_address + output_offset, output_offset, value);
-  }
-
-  // A marker value is used in place of the function.
-  output_offset -= kPointerSize;
-  value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::CONSTRUCT));
-  output_frame->SetFrameSlot(output_offset, value);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; function (construct sentinel)\n",
-           top_address + output_offset, output_offset, value);
-  }
-
-  // The output frame reflects a JSConstructStubGeneric frame.
-  output_offset -= kPointerSize;
-  value = reinterpret_cast<intptr_t>(construct_stub);
-  output_frame->SetFrameSlot(output_offset, value);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; code object\n",
-           top_address + output_offset, output_offset, value);
-  }
-
-  // Number of incoming arguments.
-  output_offset -= kPointerSize;
-  value = reinterpret_cast<uint32_t>(Smi::FromInt(height - 1));
-  output_frame->SetFrameSlot(output_offset, value);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; argc (%d)\n",
-           top_address + output_offset, output_offset, value, height - 1);
-  }
-
-  // Constructor function being invoked by the stub.
-  output_offset -= kPointerSize;
-  value = reinterpret_cast<intptr_t>(function);
-  output_frame->SetFrameSlot(output_offset, value);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; constructor function\n",
-           top_address + output_offset, output_offset, value);
-  }
-
-  // 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);
-  if (trace_) {
-    PrintF("    0x%08x: [top + %d] <- 0x%08x ; allocated receiver\n",
-           top_address + output_offset, output_offset, value);
-  }
-
-  ASSERT(0 == output_offset);
-
-  uint32_t pc = reinterpret_cast<uint32_t>(
-      construct_stub->instruction_start() +
-      isolate_->heap()->construct_stub_deopt_pc_offset()->value());
-  output_frame->SetPc(pc);
-}
-
-
 // This code is very similar to ia32 code, but relies on register names (fp, sp)
 // and how the frame is laid out.
 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator,
                                    int frame_index) {
   // Read the ast node id, function, and frame height for this output frame.
   BailoutId node_id = BailoutId(iterator->Next());
   JSFunction* function;
   if (frame_index != 0) {
     function = JSFunction::cast(ComputeLiteral(iterator->Next()));
   } else {
@@ skipping 425 matching lines @@
     __ push(ip);
     __ b(&done);
     ASSERT(masm()->pc_offset() - start == table_entry_size_);
   }
   __ bind(&done);
 }
 
 #undef __
 
 } }  // namespace v8::internal