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// Header for BarrierTailReplication.cc function pass.
//
// Copyright (c) 2011 Universidad Rey Juan Carlos
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef POCL_BARRIER_TAIL_REPLICATION
#define POCL_BARRIER_TAIL_REPLICATION
#include "config.h"
#if (defined LLVM_3_1 or defined LLVM_3_2)
#include "llvm/Function.h"
#else
#include "llvm/IR/Function.h"
#endif
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Utils/Cloning.h"
#include <map>
#include <set>
namespace pocl {
class Workgroup;
class BarrierTailReplication : public llvm::FunctionPass {
public:
static char ID;
BarrierTailReplication(): FunctionPass(ID) {}
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const;
virtual bool runOnFunction(llvm::Function &F);
private:
typedef std::set<llvm::BasicBlock *> BasicBlockSet;
typedef std::vector<llvm::BasicBlock *> BasicBlockVector;
typedef std::map<llvm::Value *, llvm::Value *> ValueValueMap;
llvm::DominatorTree *DT;
llvm::LoopInfo *LI;
bool ProcessFunction(llvm::Function &F);
bool FindBarriersDFS(llvm::BasicBlock *bb,
BasicBlockSet &processed_bbs);
bool ReplicateJoinedSubgraphs(llvm::BasicBlock *dominator,
llvm::BasicBlock *subgraph_entry,
BasicBlockSet &processed_bbs);
llvm::BasicBlock* ReplicateSubgraph(llvm::BasicBlock *entry,
llvm::Function *f);
void FindSubgraph(BasicBlockVector &subgraph,
llvm::BasicBlock *entry);
void ReplicateBasicBlocks(BasicBlockVector &new_graph,
llvm::ValueToValueMapTy &reference_map,
BasicBlockVector &graph,
llvm::Function *f);
void UpdateReferences(const BasicBlockVector &graph,
llvm::ValueToValueMapTy &reference_map);
bool CleanupPHIs(llvm::BasicBlock *BB);
friend class pocl::Workgroup;
};
}
#endif
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