mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
9eb59ec548
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22520 91177308-0d34-0410-b5e6-96231b3b80d8
193 lines
9.7 KiB
C++
193 lines
9.7 KiB
C++
//===-- ModuloSchedulingSuperBlock.h -Swing Modulo Scheduling-----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//Swing Modulo Scheduling done on Superblocks ( entry, multiple exit,
|
|
//multiple basic block loops).
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MODULOSCHEDULINGSB_H
|
|
#define LLVM_MODULOSCHEDULINGSB_H
|
|
|
|
#include "llvm/Analysis/LoopInfo.h"
|
|
#include "llvm/Analysis/ScalarEvolution.h"
|
|
#include "llvm/Function.h"
|
|
#include "llvm/Pass.h"
|
|
#include "llvm/CodeGen/MachineBasicBlock.h"
|
|
#include "MSScheduleSB.h"
|
|
#include "MSchedGraphSB.h"
|
|
|
|
|
|
namespace llvm {
|
|
|
|
//Struct to contain ModuloScheduling Specific Information for each node
|
|
struct MSNodeSBAttributes {
|
|
int ASAP; //Earliest time at which the opreation can be scheduled
|
|
int ALAP; //Latest time at which the operation can be scheduled.
|
|
int MOB;
|
|
int depth;
|
|
int height;
|
|
MSNodeSBAttributes(int asap=-1, int alap=-1, int mob=-1,
|
|
int d=-1, int h=-1) : ASAP(asap), ALAP(alap),
|
|
MOB(mob), depth(d),
|
|
height(h) {}
|
|
};
|
|
|
|
|
|
typedef std::vector<const MachineBasicBlock*> SuperBlock;
|
|
|
|
class ModuloSchedulingSBPass : public FunctionPass {
|
|
const TargetMachine ⌖
|
|
|
|
//Map to hold Value* defs
|
|
std::map<const Value*, MachineInstr*> defMap;
|
|
|
|
//Map to hold list of instructions associate to the induction var for each BB
|
|
std::map<SuperBlock, std::map<const MachineInstr*, unsigned> > indVarInstrs;
|
|
|
|
//Map to hold machine to llvm instrs for each valid BB
|
|
std::map<SuperBlock, std::map<MachineInstr*, Instruction*> > machineTollvm;
|
|
|
|
//LLVM Instruction we know we can add TmpInstructions to its MCFI
|
|
Instruction *defaultInst;
|
|
|
|
//Map that holds node to node attribute information
|
|
std::map<MSchedGraphSBNode*, MSNodeSBAttributes> nodeToAttributesMap;
|
|
|
|
//Map to hold all reccurrences
|
|
std::set<std::pair<int, std::vector<MSchedGraphSBNode*> > > recurrenceList;
|
|
|
|
//Set of edges to ignore, stored as src node and index into vector of successors
|
|
std::set<std::pair<MSchedGraphSBNode*, unsigned> > edgesToIgnore;
|
|
|
|
//Vector containing the partial order
|
|
std::vector<std::set<MSchedGraphSBNode*> > partialOrder;
|
|
|
|
//Vector containing the final node order
|
|
std::vector<MSchedGraphSBNode*> FinalNodeOrder;
|
|
|
|
//Schedule table, key is the cycle number and the vector is resource, node pairs
|
|
MSScheduleSB schedule;
|
|
|
|
//Current initiation interval
|
|
int II;
|
|
|
|
//Internal Functions
|
|
void FindSuperBlocks(Function &F, LoopInfo &LI,
|
|
std::vector<std::vector<const MachineBasicBlock*> > &Worklist);
|
|
bool MachineBBisValid(const MachineBasicBlock *B,
|
|
std::map<const MachineInstr*, unsigned> &indexMap,
|
|
unsigned &offset);
|
|
bool CreateDefMap(std::vector<const MachineBasicBlock*> &SB);
|
|
bool getIndVar(std::vector<const MachineBasicBlock*> &superBlock,
|
|
std::map<BasicBlock*, MachineBasicBlock*> &bbMap,
|
|
std::map<const MachineInstr*, unsigned> &indexMap);
|
|
bool assocIndVar(Instruction *I, std::set<Instruction*> &indVar,
|
|
std::vector<Instruction*> &stack,
|
|
std::map<BasicBlock*, MachineBasicBlock*> &bbMap,
|
|
const BasicBlock *first,
|
|
std::set<const BasicBlock*> &llvmSuperBlock);
|
|
int calculateResMII(std::vector<const MachineBasicBlock*> &superBlock);
|
|
int calculateRecMII(MSchedGraphSB *graph, int MII);
|
|
void findAllCircuits(MSchedGraphSB *g, int II);
|
|
void addRecc(std::vector<MSchedGraphSBNode*> &stack,
|
|
std::map<MSchedGraphSBNode*, MSchedGraphSBNode*> &newNodes);
|
|
bool circuit(MSchedGraphSBNode *v, std::vector<MSchedGraphSBNode*> &stack,
|
|
std::set<MSchedGraphSBNode*> &blocked, std::vector<MSchedGraphSBNode*> &SCC,
|
|
MSchedGraphSBNode *s, std::map<MSchedGraphSBNode*,
|
|
std::set<MSchedGraphSBNode*> > &B,
|
|
int II, std::map<MSchedGraphSBNode*, MSchedGraphSBNode*> &newNodes);
|
|
void unblock(MSchedGraphSBNode *u, std::set<MSchedGraphSBNode*> &blocked,
|
|
std::map<MSchedGraphSBNode*, std::set<MSchedGraphSBNode*> > &B);
|
|
void addSCC(std::vector<MSchedGraphSBNode*> &SCC, std::map<MSchedGraphSBNode*, MSchedGraphSBNode*> &newNodes);
|
|
void calculateNodeAttributes(MSchedGraphSB *graph, int MII);
|
|
bool ignoreEdge(MSchedGraphSBNode *srcNode, MSchedGraphSBNode *destNode);
|
|
int calculateASAP(MSchedGraphSBNode *node, int MII, MSchedGraphSBNode *destNode);
|
|
int calculateALAP(MSchedGraphSBNode *node, int MII,
|
|
int maxASAP, MSchedGraphSBNode *srcNode);
|
|
int findMaxASAP();
|
|
int calculateHeight(MSchedGraphSBNode *node,MSchedGraphSBNode *srcNode);
|
|
int calculateDepth(MSchedGraphSBNode *node, MSchedGraphSBNode *destNode);
|
|
void computePartialOrder();
|
|
void connectedComponentSet(MSchedGraphSBNode *node, std::set<MSchedGraphSBNode*> &ccSet,
|
|
std::set<MSchedGraphSBNode*> &lastNodes);
|
|
void searchPath(MSchedGraphSBNode *node,
|
|
std::vector<MSchedGraphSBNode*> &path,
|
|
std::set<MSchedGraphSBNode*> &nodesToAdd,
|
|
std::set<MSchedGraphSBNode*> &new_reccurrence);
|
|
void orderNodes();
|
|
bool computeSchedule(std::vector<const MachineBasicBlock*> &BB, MSchedGraphSB *MSG);
|
|
bool scheduleNode(MSchedGraphSBNode *node, int start, int end);
|
|
void predIntersect(std::set<MSchedGraphSBNode*> &CurrentSet, std::set<MSchedGraphSBNode*> &IntersectResult);
|
|
void succIntersect(std::set<MSchedGraphSBNode*> &CurrentSet, std::set<MSchedGraphSBNode*> &IntersectResult);
|
|
void reconstructLoop(std::vector<const MachineBasicBlock*> &SB);
|
|
void fixBranches(std::vector<std::vector<MachineBasicBlock*> > &prologues,
|
|
std::vector<std::vector<BasicBlock*> > &llvm_prologues,
|
|
std::vector<MachineBasicBlock*> &machineKernelBB,
|
|
std::vector<BasicBlock*> &llvmKernelBB,
|
|
std::vector<std::vector<MachineBasicBlock*> > &epilogues,
|
|
std::vector<std::vector<BasicBlock*> > &llvm_epilogues,
|
|
std::vector<const MachineBasicBlock*> &SB,
|
|
std::map<const MachineBasicBlock*, Value*> &sideExits);
|
|
|
|
void writePrologues(std::vector<std::vector<MachineBasicBlock *> > &prologues,
|
|
std::vector<const MachineBasicBlock*> &origBB,
|
|
std::vector<std::vector<BasicBlock*> > &llvm_prologues,
|
|
std::map<const Value*, std::pair<const MachineInstr*, int> > &valuesToSave,
|
|
std::map<Value*, std::map<int, Value*> > &newValues,
|
|
std::map<Value*, MachineBasicBlock*> &newValLocation);
|
|
|
|
void writeKernel(std::vector<BasicBlock*> &llvmBB, std::vector<MachineBasicBlock*> &machineBB,
|
|
std::map<const Value*, std::pair<const MachineInstr*, int> > &valuesToSave,
|
|
std::map<Value*, std::map<int, Value*> > &newValues,
|
|
std::map<Value*, MachineBasicBlock*> &newValLocation,
|
|
std::map<Value*, std::map<int, Value*> > &kernelPHIs);
|
|
|
|
void removePHIs(std::vector<const MachineBasicBlock*> &SB,
|
|
std::vector<std::vector<MachineBasicBlock*> > &prologues,
|
|
std::vector<std::vector<MachineBasicBlock*> > &epilogues,
|
|
std::vector<MachineBasicBlock*> &kernelBB,
|
|
std::map<Value*, MachineBasicBlock*> &newValLocation);
|
|
|
|
void writeEpilogues(std::vector<std::vector<MachineBasicBlock*> > &epilogues,
|
|
std::vector<const MachineBasicBlock*> &origSB,
|
|
std::vector<std::vector<BasicBlock*> > &llvm_epilogues,
|
|
std::map<const Value*, std::pair<const MachineInstr*, int> > &valuesToSave,
|
|
std::map<Value*, std::map<int, Value*> > &newValues,
|
|
std::map<Value*, MachineBasicBlock*> &newValLocation,
|
|
std::map<Value*, std::map<int, Value*> > &kernelPHIs);
|
|
|
|
void writeSideExits(std::vector<std::vector<MachineBasicBlock *> > &prologues,
|
|
std::vector<std::vector<BasicBlock*> > &llvm_prologues,
|
|
std::vector<std::vector<MachineBasicBlock *> > &epilogues,
|
|
std::vector<std::vector<BasicBlock*> > &llvm_epilogues,
|
|
std::map<const MachineBasicBlock*, Value*> &sideExits,
|
|
std::map<MachineBasicBlock*, std::vector<std::pair<MachineInstr*, int> > > &instrsMovedDown,
|
|
std::vector<const MachineBasicBlock*> &SB,
|
|
std::vector<MachineBasicBlock*> &kernelMBBs,
|
|
std::map<MachineBasicBlock*, int> branchStage);
|
|
|
|
public:
|
|
ModuloSchedulingSBPass(TargetMachine &targ) : target(targ) {}
|
|
virtual bool runOnFunction(Function &F);
|
|
virtual const char* getPassName() const { return "ModuloScheduling-SuperBlock"; }
|
|
|
|
|
|
// getAnalysisUsage
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
/// HACK: We don't actually need scev, but we have
|
|
/// to say we do so that the pass manager does not delete it
|
|
/// before we run.
|
|
AU.addRequired<LoopInfo>();
|
|
AU.addRequired<ScalarEvolution>();
|
|
AU.addRequired<DependenceAnalyzer>();
|
|
}
|
|
};
|
|
}
|
|
#endif
|