94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
//===--------------------- InstructionInfoView.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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/// \file
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///
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/// This file implements the instruction info view.
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///
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/// The goal fo the instruction info view is to print the latency and reciprocal
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/// throughput information for every instruction in the input sequence.
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/// This section also reports extra information related to the number of micro
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/// opcodes, and opcode properties (i.e. 'MayLoad', 'MayStore', 'HasSideEffects)
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///
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/// Example:
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///
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/// Instruction Info:
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/// [1]: #uOps
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/// [2]: Latency
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/// [3]: RThroughput
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/// [4]: MayLoad
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/// [5]: MayStore
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/// [6]: HasSideEffects
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///
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/// [1] [2] [3] [4] [5] [6] Instructions:
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/// 1 2 1.00 vmulps %xmm0, %xmm1, %xmm2
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/// 1 3 1.00 vhaddps %xmm2, %xmm2, %xmm3
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/// 1 3 1.00 vhaddps %xmm3, %xmm3, %xmm4
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_MCA_INSTRUCTIONINFOVIEW_H
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#define LLVM_TOOLS_LLVM_MCA_INSTRUCTIONINFOVIEW_H
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#include "Views/InstructionView.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MCA/CodeEmitter.h"
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#include "llvm/Support/raw_ostream.h"
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#define DEBUG_TYPE "llvm-mca"
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namespace llvm {
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namespace mca {
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/// A view that prints out generic instruction information.
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class InstructionInfoView : public InstructionView {
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const llvm::MCInstrInfo &MCII;
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CodeEmitter &CE;
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bool PrintEncodings;
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bool PrintBarriers;
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using UniqueInst = std::unique_ptr<Instruction>;
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ArrayRef<UniqueInst> LoweredInsts;
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struct InstructionInfoViewData {
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unsigned NumMicroOpcodes = 0;
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unsigned Latency = 0;
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Optional<double> RThroughput = 0.0;
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bool mayLoad = false;
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bool mayStore = false;
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bool hasUnmodeledSideEffects = false;
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};
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using IIVDVec = SmallVector<InstructionInfoViewData, 16>;
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/// Place the data into the array of InstructionInfoViewData IIVD.
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void collectData(MutableArrayRef<InstructionInfoViewData> IIVD) const;
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public:
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InstructionInfoView(const llvm::MCSubtargetInfo &ST,
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const llvm::MCInstrInfo &II, CodeEmitter &C,
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bool ShouldPrintEncodings, llvm::ArrayRef<llvm::MCInst> S,
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llvm::MCInstPrinter &IP,
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ArrayRef<UniqueInst> LoweredInsts,
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bool ShouldPrintBarriers)
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: InstructionView(ST, IP, S), MCII(II), CE(C),
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PrintEncodings(ShouldPrintEncodings),
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PrintBarriers(ShouldPrintBarriers), LoweredInsts(LoweredInsts) {}
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void printView(llvm::raw_ostream &OS) const override;
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StringRef getNameAsString() const override { return "InstructionInfoView"; }
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json::Value toJSON() const override;
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json::Object toJSON(const InstructionInfoViewData &IIVD) const;
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};
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} // namespace mca
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} // namespace llvm
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#endif
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