Remove some dead code.

src/virtual-frame-heavy-inl.h

-// Copyright 2010 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
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_VIRTUAL_FRAME_HEAVY_INL_H_
-#define V8_VIRTUAL_FRAME_HEAVY_INL_H_
-
-#include "type-info.h"
-#include "register-allocator.h"
-#include "scopes.h"
-#include "register-allocator-inl.h"
-#include "codegen-inl.h"
-
-namespace v8 {
-namespace internal {
-
-// On entry to a function, the virtual frame already contains the receiver,
-// the parameters, and a return address.  All frame elements are in memory.
-VirtualFrame::VirtualFrame()
-    : elements_(parameter_count() + local_count() + kPreallocatedElements),
-      stack_pointer_(parameter_count() + 1) {  // 0-based index of TOS.
-  for (int i = 0; i <= stack_pointer_; i++) {
-    elements_.Add(FrameElement::MemoryElement(TypeInfo::Unknown()));
-  }
-  for (int i = 0; i < RegisterAllocator::kNumRegisters; i++) {
-    register_locations_[i] = kIllegalIndex;
-  }
-}
-
-
-// When cloned, a frame is a deep copy of the original.
-VirtualFrame::VirtualFrame(VirtualFrame* original)
-    : elements_(original->element_count()),
-      stack_pointer_(original->stack_pointer_) {
-  elements_.AddAll(original->elements_);
-  // Copy register locations from original.
-  memcpy(&register_locations_,
-         original->register_locations_,
-         sizeof(register_locations_));
-}
-
-
-void VirtualFrame::PushFrameSlotAt(int index) {
-  elements_.Add(CopyElementAt(index));
-}
-
-
-void VirtualFrame::Push(Register reg, TypeInfo info) {
-  if (is_used(reg)) {
-    int index = register_location(reg);
-    FrameElement element = CopyElementAt(index, info);
-    elements_.Add(element);
-  } else {
-    Use(reg, element_count());
-    FrameElement element =
-        FrameElement::RegisterElement(reg, FrameElement::NOT_SYNCED, info);
-    elements_.Add(element);
-  }
-}
-
-
-bool VirtualFrame::ConstantPoolOverflowed() {
-  return FrameElement::ConstantPoolOverflowed();
-}
-
-
-bool VirtualFrame::Equals(VirtualFrame* other) {
-#ifdef DEBUG
-  for (int i = 0; i < RegisterAllocator::kNumRegisters; i++) {
-    if (register_location(i) != other->register_location(i)) {
-      return false;
-    }
-  }
-  if (element_count() != other->element_count()) return false;
-#endif
-  if (stack_pointer_ != other->stack_pointer_) return false;
-  for (int i = 0; i < element_count(); i++) {
-    if (!elements_[i].Equals(other->elements_[i])) return false;
-  }
-
-  return true;
-}
-
-
-void VirtualFrame::SetTypeForLocalAt(int index, TypeInfo info) {
-  elements_[local0_index() + index].set_type_info(info);
-}
-
-
-// Make the type of all elements be MEMORY.
-void VirtualFrame::SpillAll() {
-  for (int i = 0; i < element_count(); i++) {
-    SpillElementAt(i);
-  }
-}
-
-
-void VirtualFrame::PrepareForReturn() {
-  // Spill all locals. This is necessary to make sure all locals have
-  // the right value when breaking at the return site in the debugger.
-  for (int i = 0; i < expression_base_index(); i++) {
-    SpillElementAt(i);
-  }
-}
-
-
-void VirtualFrame::SetTypeForParamAt(int index, TypeInfo info) {
-  elements_[param0_index() + index].set_type_info(info);
-}
-
-
-void VirtualFrame::Nip(int num_dropped) {
-  ASSERT(num_dropped >= 0);
-  if (num_dropped == 0) return;
-  Result tos = Pop();
-  if (num_dropped > 1) {
-    Drop(num_dropped - 1);
-  }
-  SetElementAt(0, &tos);
-}
-
-
-void VirtualFrame::Push(Smi* value) {
-  Push(Handle<Object> (value));
-}
-
-
-int VirtualFrame::register_location(Register reg) {
-  return register_locations_[RegisterAllocator::ToNumber(reg)];
-}
-
-
-void VirtualFrame::set_register_location(Register reg, int index) {
-  register_locations_[RegisterAllocator::ToNumber(reg)] = index;
-}
-
-
-bool VirtualFrame::is_used(Register reg) {
-  return register_locations_[RegisterAllocator::ToNumber(reg)]
-      != kIllegalIndex;
-}
-
-
-void VirtualFrame::SetElementAt(int index, Handle<Object> value) {
-  Result temp(value);
-  SetElementAt(index, &temp);
-}
-
-
-Result VirtualFrame::CallStub(CodeStub* stub, int arg_count) {
-  PrepareForCall(arg_count, arg_count);
-  return RawCallStub(stub);
-}
-
-
-int VirtualFrame::parameter_count() {
-  return cgen()->scope()->num_parameters();
-}
-
-
-int VirtualFrame::local_count() {
-  return cgen()->scope()->num_stack_slots();
-}
-
-} }  // namespace v8::internal
-
-#endif  // V8_VIRTUAL_FRAME_HEAVY_INL_H_