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63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
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//===--------------------- InstrBuilder.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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///
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/// A builder class for instructions that are statically analyzed by llvm-mca.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_MCA_INSTRBUILDER_H
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#define LLVM_TOOLS_LLVM_MCA_INSTRBUILDER_H
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#include "Dispatch.h"
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#include "Instruction.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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namespace mca {
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class DispatchUnit;
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/// \brief A builder class that knows how to construct Instruction objects.
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///
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/// Every llvm-mca Instruction is described by an object of class InstrDesc.
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/// An InstrDesc describes which registers are read/written by the instruction,
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/// as well as the instruction latency and hardware resources consumed.
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///
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/// This class is used by the tool to construct Instructions and instruction
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/// descriptors (i.e. InstrDesc objects).
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/// Information from the machine scheduling model is used to identify processor
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/// resources that are consumed by an instruction.
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class InstrBuilder {
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const llvm::MCInstrInfo &MCII;
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const llvm::ArrayRef<uint64_t> ProcResourceMasks;
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llvm::DenseMap<unsigned short, std::unique_ptr<const InstrDesc>> Descriptors;
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llvm::DenseMap<unsigned, std::unique_ptr<Instruction>> Instructions;
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void createInstrDescImpl(const llvm::MCSubtargetInfo &STI,
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const llvm::MCInst &MCI);
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public:
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InstrBuilder(const llvm::MCInstrInfo &mcii,
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const llvm::ArrayRef<uint64_t> Masks)
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: MCII(mcii), ProcResourceMasks(Masks) {}
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const InstrDesc &getOrCreateInstrDesc(const llvm::MCSubtargetInfo &STI,
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const llvm::MCInst &MCI);
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Instruction *createInstruction(const llvm::MCSubtargetInfo &STI,
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DispatchUnit &DU, unsigned Idx,
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const llvm::MCInst &MCI);
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};
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} // namespace mca
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#endif
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