зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
1.7 KiB
C++
75 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef _SPILLING_H_
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#define _SPILLING_H_
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#include "Fundamentals.h"
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#include "VirtualRegister.h"
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#include "Instruction.h"
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#include "Fifo.h"
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#include "CpuInfo.h"
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class ControlNode;
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class Spilling
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{
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protected:
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VirtualRegisterManager& vRegManager;
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MdEmitter& emitter;
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public:
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Spilling(VirtualRegisterManager& vrMan, MdEmitter& emit) : vRegManager(vrMan), emitter(emit) {}
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void insertSpillCode(ControlNode** dfsList, Uint32 nNodes);
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};
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class RegisterFifo : public Fifo<Uint32>
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{
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private:
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FastBitSet bitset;
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public:
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RegisterFifo(Uint32 size) : Fifo<Uint32>(size), bitset(size) {}
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Uint32 get();
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void put(Uint32 r);
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bool test(Uint32 r) {return bitset.test(r);}
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};
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inline Uint32
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RegisterFifo::get()
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{
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Uint32 r = Fifo<Uint32>::get();
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bitset.clear(r);
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return r;
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}
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inline void
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RegisterFifo::put(Uint32 r)
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{
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Fifo<Uint32>::put(r);
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bitset.set(r);
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}
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#endif /* _SPILLING_H_ */
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