v8/src/virtual-frame-light-inl.h

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#ifndef V8_VIRTUAL_FRAME_LIGHT_INL_H_
#define V8_VIRTUAL_FRAME_LIGHT_INL_H_

#include "type-info.h"
#include "register-allocator.h"
#include "scopes.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()
    : element_count_(parameter_count() + 2),
      top_of_stack_state_(NO_TOS_REGISTERS),
      register_allocation_map_(0) { }


// When cloned, a frame is a deep copy of the original.
VirtualFrame::VirtualFrame(VirtualFrame* original)
    : element_count_(original->element_count()),
      top_of_stack_state_(original->top_of_stack_state_),
      register_allocation_map_(original->register_allocation_map_) { }


bool VirtualFrame::Equals(VirtualFrame* other) {
  ASSERT(element_count() == other->element_count());
  if (top_of_stack_state_ != other->top_of_stack_state_) return false;
  if (register_allocation_map_ != other->register_allocation_map_) return false;

  return true;
}


void VirtualFrame::PrepareForReturn() {
  SpillAll();
}


} }  // namespace v8::internal

#endif  // V8_VIRTUAL_FRAME_LIGHT_INL_H_