llvm/lib/CodeGen/Spiller.h
Jakob Stoklund Olesen f2c6e367c1 Change the createSpiller interface to take a MachineFunctionPass argument.
The spillers can pluck the analyses they need from the pass reference.

Switch some never-null pointers to references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108969 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20 23:50:15 +00:00

55 lines
1.8 KiB
C++

//===-- llvm/CodeGen/Spiller.h - Spiller -*- C++ -*------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_SPILLER_H
#define LLVM_CODEGEN_SPILLER_H
#include "llvm/ADT/SmallVector.h"
#include <vector>
namespace llvm {
class LiveInterval;
class MachineFunction;
class MachineFunctionPass;
class SlotIndex;
class VirtRegMap;
/// Spiller interface.
///
/// Implementations are utility classes which insert spill or remat code on
/// demand.
class Spiller {
public:
virtual ~Spiller() = 0;
/// spill - Spill the given live interval. The method used will depend on
/// the Spiller implementation selected.
///
/// @param li The live interval to be spilled.
/// @param spillIs A list of intervals that are about to be spilled,
/// and so cannot be used for remat etc.
/// @param newIntervals The newly created intervals will be appended here.
/// @param earliestIndex The earliest point for splitting. (OK, it's another
/// pointer to the allocator guts).
virtual void spill(LiveInterval *li,
std::vector<LiveInterval*> &newIntervals,
SmallVectorImpl<LiveInterval*> &spillIs,
SlotIndex *earliestIndex = 0) = 0;
};
/// Create and return a spiller object, as specified on the command line.
Spiller* createSpiller(MachineFunctionPass &pass,
MachineFunction &mf,
VirtRegMap &vrm);
}
#endif