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da0d5626a8
The main difference is that now `cycleStart()` and `cycleEnd()` return an llvm::Error. This patch implements a few minor style changes, and adds missing 'const' to some methods. llvm-svn: 339885
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
//===--------------------- SourceMgr.h --------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This file implements class SourceMgr. Class SourceMgr abstracts the input
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/// code sequence (a sequence of MCInst), and assings unique identifiers to
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/// every instruction in the sequence.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_MCA_SOURCEMGR_H
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#define LLVM_TOOLS_LLVM_MCA_SOURCEMGR_H
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#include "llvm/MC/MCInst.h"
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#include <vector>
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namespace mca {
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typedef std::pair<unsigned, const llvm::MCInst *> SourceRef;
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class SourceMgr {
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using InstVec = std::vector<std::unique_ptr<const llvm::MCInst>>;
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const InstVec &Sequence;
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unsigned Current;
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unsigned Iterations;
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static const unsigned DefaultIterations = 100;
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public:
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SourceMgr(const InstVec &MCInstSequence, unsigned NumIterations)
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: Sequence(MCInstSequence), Current(0),
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Iterations(NumIterations ? NumIterations : DefaultIterations) {}
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unsigned getCurrentIteration() const { return Current / Sequence.size(); }
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unsigned getNumIterations() const { return Iterations; }
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unsigned size() const { return Sequence.size(); }
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const InstVec &getSequence() const { return Sequence; }
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bool hasNext() const { return Current < (Iterations * size()); }
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void updateNext() { Current++; }
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const SourceRef peekNext() const {
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assert(hasNext() && "Already at end of sequence!");
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unsigned Index = getCurrentInstructionIndex();
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return SourceRef(Current, Sequence[Index].get());
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}
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unsigned getCurrentInstructionIndex() const {
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return Current % Sequence.size();
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}
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const llvm::MCInst &getMCInstFromIndex(unsigned Index) const {
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return *Sequence[Index % size()];
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}
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bool isEmpty() const { return size() == 0; }
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};
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} // namespace mca
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#endif
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