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//===---------------------------- Context.h ---------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file defines a class for holding ownership of various simulated
/// hardware units. A Context also provides a utility routine for constructing
/// a default out-of-order pipeline with fetch, dispatch, execute, and retire
/// stages).
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_MCA_CONTEXT_H
#define LLVM_TOOLS_LLVM_MCA_CONTEXT_H
#include "HardwareUnit.h"
#include "InstrBuilder.h"
#include "Pipeline.h"
#include "SourceMgr.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSchedule.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include <memory>
namespace mca {
/// This is a convenience struct to hold the parameters necessary for creating
/// the pre-built "default" out-of-order pipeline.
struct PipelineOptions {
PipelineOptions(unsigned DW, unsigned RFS, unsigned LQS, unsigned SQS,
bool NoAlias)
: DispatchWidth(DW), RegisterFileSize(RFS), LoadQueueSize(LQS),
StoreQueueSize(SQS), AssumeNoAlias(NoAlias) {}
unsigned DispatchWidth;
unsigned RegisterFileSize;
unsigned LoadQueueSize;
unsigned StoreQueueSize;
bool AssumeNoAlias;
};
class Context {
llvm::SmallVector<std::unique_ptr<HardwareUnit>, 4> Hardware;
const llvm::MCRegisterInfo &MRI;
const llvm::MCSubtargetInfo &STI;
public:
Context(const llvm::MCRegisterInfo &R, const llvm::MCSubtargetInfo &S)
: MRI(R), STI(S) {}
Context(const Context &C) = delete;
Context &operator=(const Context &C) = delete;
void addHardwareUnit(std::unique_ptr<HardwareUnit> H) {
Hardware.push_back(std::move(H));
}
/// Construct a basic pipeline for simulating an out-of-order pipeline.
/// This pipeline consists of Fetch, Dispatch, Execute, and Retire stages.
std::unique_ptr<Pipeline> createDefaultPipeline(const PipelineOptions &Opts,
InstrBuilder &IB,
SourceMgr &SrcMgr);
};
} // namespace mca
#endif // LLVM_TOOLS_LLVM_MCA_CONTEXT_H
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