osr.cc

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// Copyright 2014 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/compiler/osr.h"
 
#include "src/codegen/optimized-compilation-info.h"
#include "src/compiler/frame.h"
#include "src/objects/js-array-inl.h"
 
namespace v8 {
namespace internal {
namespace compiler {
 
OsrHelper::OsrHelper(OptimizedCompilationInfo* info)
    : parameter_count_(info->bytecode_array()->parameter_count()),
      stack_slot_count_(UnoptimizedFrameConstants::RegisterStackSlotCount(
                            info->bytecode_array()->register_count()) +
                        UnoptimizedFrameConstants::kExtraSlotCount) {}
 
void OsrHelper::SetupFrame(Frame* frame) {
  // The optimized frame will subsume the unoptimized frame. Do so by reserving
  // the first spill slots.
  frame->ReserveSpillSlots(UnoptimizedFrameSlots());
}
 
}  // namespace compiler
}  // namespace internal
}  // namespace v8