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// Header for WorkitemLoops function pass.
//
// Copyright (c) 2012 Pekka Jääskeläinen / TUT
// Copyright (c) 2013-2014, Texas Instruments Incorporated - http://www.ti.com/
//
// 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_WORKITEM_LOOPS_H
#define _POCL_WORKITEM_LOOPS_H
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Transforms/Utils/ValueMapper.h"
#include <map>
#include <vector>
#include "WorkitemHandler.h"
#include "ParallelRegion.h"
#define MAX_DIMENSIONS 3u
namespace llvm {
class PostDominatorTree;
}
namespace pocl {
class Workgroup;
class WorkitemLoops : public pocl::WorkitemHandler {
public:
static char ID;
WorkitemLoops() : pocl::WorkitemHandler(ID) {}
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const;
virtual bool runOnFunction(llvm::Function &F);
private:
typedef std::vector<llvm::BasicBlock *> BasicBlockVector;
typedef std::set<llvm::Instruction* > InstructionIndex;
typedef std::vector<llvm::Instruction* > InstructionVec;
typedef std::map<std::string, llvm::Instruction*> StrInstructionMap;
InstructionIndex workGroupVariables;
llvm::DominatorTree *DT;
llvm::LoopInfo *LI;
llvm::PostDominatorTree *PDT;
ParallelRegion::ParallelRegionVector *original_parallel_regions;
StrInstructionMap contextArrays;
virtual bool ProcessFunction(llvm::Function &F);
void FixMultiRegionVariables(ParallelRegion *region);
void AddContextSaveRestore(llvm::Instruction *instruction);
llvm::Instruction *AddContextSave(llvm::Instruction *instruction, llvm::Instruction *alloca);
llvm::Instruction *AddContextRestore
(llvm::Value *val, llvm::Instruction *alloca,
llvm::Instruction *before=NULL,
bool isAlloca=false);
llvm::Instruction *GetContextArray(llvm::Instruction *val);
std::pair<llvm::BasicBlock *, llvm::BasicBlock *>
CreateLoopAround
(ParallelRegion ®ion, llvm::BasicBlock *entryBB, llvm::BasicBlock *exitBB,
bool peeledFirst, llvm::Value *localIdVar, size_t LocalSizeForDim,
bool addIncBlock=true, llvm::Instruction *lsizeDim=NULL);
void FindKernelDim(llvm::Function &F);
llvm::BasicBlock *
AppendIncBlock
(llvm::BasicBlock* after,
llvm::Value *localIdVar);
ParallelRegion* RegionOfBlock(llvm::BasicBlock *bb);
bool ShouldNotBeContextSaved(llvm::Instruction *instr);
std::map<llvm::Instruction*, unsigned> tempInstructionIds;
size_t tempInstructionIndex;
// An alloca in the kernel which stores the first iteration to execute
// in the inner (dimension 0) loop. This is set to 1 in an peeled iteration
// to skip the 0, 0, 0 iteration in the loops.
llvm::Value *localIdXFirstVar;
unsigned int maxDim;
llvm::Instruction *lsizeX, *lsizeY, *lsizeZ;
};
}
#endif
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