Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /home/real/node-v13.0.1/deps/v8/src/compiler/backend/ |
// Copyright 2015 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.
#ifndef V8_COMPILER_BACKEND_LIVE_RANGE_SEPARATOR_H_
#define V8_COMPILER_BACKEND_LIVE_RANGE_SEPARATOR_H_
#include "src/zone/zone.h"
namespace v8 {
namespace internal {
class Zone;
namespace compiler {
class RegisterAllocationData;
// A register allocation pair of transformations: splinter and merge live ranges
class LiveRangeSeparator final : public ZoneObject {
public:
LiveRangeSeparator(RegisterAllocationData* data, Zone* zone)
: data_(data), zone_(zone) {}
void Splinter();
private:
RegisterAllocationData* data() const { return data_; }
Zone* zone() const { return zone_; }
RegisterAllocationData* const data_;
Zone* const zone_;
DISALLOW_COPY_AND_ASSIGN(LiveRangeSeparator);
};
class LiveRangeMerger final : public ZoneObject {
public:
LiveRangeMerger(RegisterAllocationData* data, Zone* zone)
: data_(data), zone_(zone) {}
void Merge();
private:
RegisterAllocationData* data() const { return data_; }
Zone* zone() const { return zone_; }
// Mark ranges spilled in deferred blocks, that also cover non-deferred code.
// We do nothing special for ranges fully contained in deferred blocks,
// because they would "spill in deferred blocks" anyway.
void MarkRangesSpilledInDeferredBlocks();
RegisterAllocationData* const data_;
Zone* const zone_;
DISALLOW_COPY_AND_ASSIGN(LiveRangeMerger);
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_BACKEND_LIVE_RANGE_SEPARATOR_H_