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//===--------------------- InstructionInfoView.h ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file implements the instruction info view.
///
/// The goal fo the instruction info view is to print the latency and reciprocal
/// throughput information for every instruction in the input sequence.
/// This section also reports extra information related to the number of micro
/// opcodes, and opcode properties (i.e. 'MayLoad', 'MayStore', 'HasSideEffects)
///
/// Example:
///
/// Instruction Info:
/// [1]: #uOps
/// [2]: Latency
/// [3]: RThroughput
/// [4]: MayLoad
/// [5]: MayStore
/// [6]: HasSideEffects
///
/// [1] [2] [3] [4] [5] [6] Instructions:
/// 1 2 1.00 vmulps %xmm0, %xmm1, %xmm2
/// 1 3 1.00 vhaddps %xmm2, %xmm2, %xmm3
/// 1 3 1.00 vhaddps %xmm3, %xmm3, %xmm4
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_MCA_INSTRUCTIONINFOVIEW_H
#define LLVM_TOOLS_LLVM_MCA_INSTRUCTIONINFOVIEW_H
#include "Views/InstructionView.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MCA/CodeEmitter.h"
#include "llvm/Support/raw_ostream.h"
#define DEBUG_TYPE "llvm-mca"
namespace llvm {
namespace mca {
/// A view that prints out generic instruction information.
class InstructionInfoView : public InstructionView {
const llvm::MCInstrInfo &MCII;
CodeEmitter &CE;
bool PrintEncodings;
bool PrintBarriers;
using UniqueInst = std::unique_ptr<Instruction>;
ArrayRef<UniqueInst> LoweredInsts;
struct InstructionInfoViewData {
unsigned NumMicroOpcodes = 0;
unsigned Latency = 0;
Optional<double> RThroughput = 0.0;
bool mayLoad = false;
bool mayStore = false;
bool hasUnmodeledSideEffects = false;
};
using IIVDVec = SmallVector<InstructionInfoViewData, 16>;
/// Place the data into the array of InstructionInfoViewData IIVD.
void collectData(MutableArrayRef<InstructionInfoViewData> IIVD) const;
public:
InstructionInfoView(const llvm::MCSubtargetInfo &ST,
const llvm::MCInstrInfo &II, CodeEmitter &C,
bool ShouldPrintEncodings, llvm::ArrayRef<llvm::MCInst> S,
llvm::MCInstPrinter &IP,
ArrayRef<UniqueInst> LoweredInsts,
bool ShouldPrintBarriers)
: InstructionView(ST, IP, S), MCII(II), CE(C),
PrintEncodings(ShouldPrintEncodings),
PrintBarriers(ShouldPrintBarriers), LoweredInsts(LoweredInsts) {}
void printView(llvm::raw_ostream &OS) const override;
StringRef getNameAsString() const override { return "InstructionInfoView"; }
json::Value toJSON() const override;
json::Object toJSON(const InstructionInfoViewData &IIVD) const;
};
} // namespace mca
} // namespace llvm
#endif
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