llvm-6502/lib/CodeGen/Spiller.h
Jakob Stoklund Olesen f6dff84d4e Force the greedy register allocator to always use the inline spiller.
Soon, RegAllocGreedy will start splitting live ranges, and then deferred
spilling won't work anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121591 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10 22:54:44 +00:00

57 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
namespace llvm {
class LiveInterval;
class MachineFunction;
class MachineFunctionPass;
class SlotIndex;
template <typename T> class SmallVectorImpl;
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.
virtual void spill(LiveInterval *li,
SmallVectorImpl<LiveInterval*> &newIntervals,
const SmallVectorImpl<LiveInterval*> &spillIs) = 0;
};
/// Create and return a spiller object, as specified on the command line.
Spiller* createSpiller(MachineFunctionPass &pass,
MachineFunction &mf,
VirtRegMap &vrm);
/// Create and return a spiller that will insert spill code directly instead
/// of deferring though VirtRegMap.
Spiller *createInlineSpiller(MachineFunctionPass &pass,
MachineFunction &mf,
VirtRegMap &vrm);
}
#endif