Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/lib/Target/Hexagon/RDFCopy.h
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//===- RDFCopy.h ------------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_HEXAGON_RDFCOPY_H
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#define LLVM_LIB_TARGET_HEXAGON_RDFCOPY_H
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#include "RDFGraph.h"
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#include "RDFLiveness.h"
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#include "RDFRegisters.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include <map>
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#include <vector>
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namespace llvm {
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class MachineBasicBlock;
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class MachineDominatorTree;
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class MachineInstr;
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namespace rdf {
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  struct CopyPropagation {
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    CopyPropagation(DataFlowGraph &dfg) : MDT(dfg.getDT()), DFG(dfg),
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        L(dfg.getMF().getRegInfo(), dfg) {}
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    virtual ~CopyPropagation() = default;
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    bool run();
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    void trace(bool On) { Trace = On; }
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    bool trace() const { return Trace; }
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    DataFlowGraph &getDFG() { return DFG; }
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    using EqualityMap = std::map<RegisterRef, RegisterRef>;
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    virtual bool interpretAsCopy(const MachineInstr *MI, EqualityMap &EM);
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  private:
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    const MachineDominatorTree &MDT;
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    DataFlowGraph &DFG;
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    Liveness L;
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    bool Trace = false;
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    // map: statement -> (map: dst reg -> src reg)
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    std::map<NodeId, EqualityMap> CopyMap;
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    std::vector<NodeId> Copies;
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    void recordCopy(NodeAddr<StmtNode*> SA, EqualityMap &EM);
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    bool scanBlock(MachineBasicBlock *B);
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    NodeId getLocalReachingDef(RegisterRef RefRR, NodeAddr<InstrNode*> IA);
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  };
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} // end namespace rdf
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_HEXAGON_RDFCOPY_H