// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_COMPILER_LIVE_RANGE_SEPARATOR_H_
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#define V8_COMPILER_LIVE_RANGE_SEPARATOR_H_
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#include "src/zone/zone.h"
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namespace v8 {
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namespace internal {
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class Zone;
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namespace compiler {
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class RegisterAllocationData;
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// A register allocation pair of transformations: splinter and merge live ranges
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class LiveRangeSeparator final : public ZoneObject {
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public:
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LiveRangeSeparator(RegisterAllocationData* data, Zone* zone)
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: data_(data), zone_(zone) {}
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void Splinter();
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private:
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RegisterAllocationData* data() const { return data_; }
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Zone* zone() const { return zone_; }
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RegisterAllocationData* const data_;
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Zone* const zone_;
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DISALLOW_COPY_AND_ASSIGN(LiveRangeSeparator);
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};
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class LiveRangeMerger final : public ZoneObject {
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public:
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LiveRangeMerger(RegisterAllocationData* data, Zone* zone)
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: data_(data), zone_(zone) {}
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void Merge();
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private:
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RegisterAllocationData* data() const { return data_; }
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Zone* zone() const { return zone_; }
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// Mark ranges spilled in deferred blocks, that also cover non-deferred code.
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// We do nothing special for ranges fully contained in deferred blocks,
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// because they would "spill in deferred blocks" anyway.
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void MarkRangesSpilledInDeferredBlocks();
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RegisterAllocationData* const data_;
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Zone* const zone_;
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DISALLOW_COPY_AND_ASSIGN(LiveRangeMerger);
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};
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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#endif // V8_COMPILER_LIVE_RANGE_SEPARATOR_H_
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