69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
//===- llvm/CodeGen/Spiller.h - Spiller -------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_SPILLER_H
|
|
#define LLVM_CODEGEN_SPILLER_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/CodeGen/Register.h"
|
|
|
|
namespace llvm {
|
|
|
|
class LiveRangeEdit;
|
|
class MachineFunction;
|
|
class MachineFunctionPass;
|
|
class VirtRegMap;
|
|
class VirtRegAuxInfo;
|
|
class LiveIntervals;
|
|
class LiveRegMatrix;
|
|
class LiveStacks;
|
|
class MachineDominatorTree;
|
|
class MachineBlockFrequencyInfo;
|
|
class AllocationOrder;
|
|
|
|
/// Spiller interface.
|
|
///
|
|
/// Implementations are utility classes which insert spill or remat code on
|
|
/// demand.
|
|
class LLVM_ABI Spiller {
|
|
virtual void anchor();
|
|
|
|
public:
|
|
virtual ~Spiller() = 0;
|
|
|
|
/// spill - Spill the LRE.getParent() live interval.
|
|
virtual void spill(LiveRangeEdit &LRE, AllocationOrder *Order = nullptr) = 0;
|
|
|
|
/// Return the registers that were spilled.
|
|
virtual ArrayRef<Register> getSpilledRegs() = 0;
|
|
|
|
/// Return registers that were not spilled, but otherwise replaced
|
|
/// (e.g. rematerialized).
|
|
virtual ArrayRef<Register> getReplacedRegs() = 0;
|
|
|
|
virtual void postOptimization() {}
|
|
|
|
struct RequiredAnalyses {
|
|
LiveIntervals &LIS;
|
|
LiveStacks &LSS;
|
|
MachineDominatorTree &MDT;
|
|
const MachineBlockFrequencyInfo &MBFI;
|
|
};
|
|
};
|
|
|
|
/// Create and return a spiller that will insert spill code directly instead
|
|
/// of deferring though VirtRegMap.
|
|
LLVM_ABI Spiller *createInlineSpiller(const Spiller::RequiredAnalyses &Analyses,
|
|
MachineFunction &MF, VirtRegMap &VRM,
|
|
VirtRegAuxInfo &VRAI,
|
|
LiveRegMatrix *Matrix = nullptr);
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_CODEGEN_SPILLER_H
|