mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-29 07:53:31 +00:00
806de357a5
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108642 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
//===-- llvm/CodeGen/Splitter.h - Splitter -*- 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_SPLITTER_H
|
|
#define LLVM_CODEGEN_SPLITTER_H
|
|
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
#include "llvm/CodeGen/MachineLoopInfo.h"
|
|
#include "llvm/CodeGen/SlotIndexes.h"
|
|
|
|
#include <deque>
|
|
#include <map>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
|
|
class LiveInterval;
|
|
class LiveIntervals;
|
|
struct LiveRange;
|
|
class LoopSplit;
|
|
class MachineDominatorTree;
|
|
class MachineRegisterInfo;
|
|
class SlotIndexes;
|
|
class TargetInstrInfo;
|
|
class VNInfo;
|
|
|
|
class LoopSplitter : public MachineFunctionPass {
|
|
friend class LoopSplit;
|
|
public:
|
|
static char ID;
|
|
|
|
LoopSplitter() : MachineFunctionPass(&ID) {}
|
|
|
|
virtual void getAnalysisUsage(AnalysisUsage &au) const;
|
|
|
|
virtual bool runOnMachineFunction(MachineFunction &fn);
|
|
|
|
virtual void releaseMemory();
|
|
|
|
|
|
private:
|
|
|
|
MachineFunction *mf;
|
|
LiveIntervals *lis;
|
|
MachineLoopInfo *mli;
|
|
MachineRegisterInfo *mri;
|
|
MachineDominatorTree *mdt;
|
|
SlotIndexes *sis;
|
|
const TargetInstrInfo *tii;
|
|
const TargetRegisterInfo *tri;
|
|
|
|
std::string fqn;
|
|
std::deque<LiveInterval*> intervals;
|
|
|
|
typedef std::pair<SlotIndex, SlotIndex> SlotPair;
|
|
typedef std::vector<SlotPair> LoopRanges;
|
|
typedef std::map<MachineLoop*, LoopRanges> LoopRangeMap;
|
|
LoopRangeMap loopRangeMap;
|
|
|
|
void dumpLoopInfo(MachineLoop &loop);
|
|
|
|
void dumpOddTerminators();
|
|
|
|
void updateTerminators(MachineBasicBlock &mbb);
|
|
|
|
bool canInsertPreHeader(MachineLoop &loop);
|
|
MachineBasicBlock& insertPreHeader(MachineLoop &loop);
|
|
|
|
bool isCriticalEdge(MachineLoop::Edge &edge);
|
|
bool canSplitEdge(MachineLoop::Edge &edge);
|
|
MachineBasicBlock& splitEdge(MachineLoop::Edge &edge, MachineLoop &loop);
|
|
|
|
LoopRanges& getLoopRanges(MachineLoop &loop);
|
|
std::pair<bool, SlotPair> getLoopSubRange(const LiveRange &lr,
|
|
MachineLoop &loop);
|
|
|
|
void dumpLoopRanges(MachineLoop &loop);
|
|
|
|
void processHeader(LoopSplit &split);
|
|
void processLoopExits(LoopSplit &split);
|
|
void processLoopUses(LoopSplit &split);
|
|
|
|
bool splitOverLoop(LiveInterval &li, MachineLoop &loop);
|
|
|
|
void processInterval(LiveInterval &li);
|
|
|
|
void processIntervals();
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|