1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
//===---------------------------- Context.cpp -------------------*- 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).
///
//===----------------------------------------------------------------------===//
#include "Context.h"
#include "DispatchStage.h"
#include "ExecuteStage.h"
#include "FetchStage.h"
#include "RegisterFile.h"
#include "RetireControlUnit.h"
#include "RetireStage.h"
#include "Scheduler.h"
namespace mca {
using namespace llvm;
std::unique_ptr<Pipeline>
Context::createDefaultPipeline(const PipelineOptions &Opts, InstrBuilder &IB,
SourceMgr &SrcMgr) {
const MCSchedModel &SM = STI.getSchedModel();
// Create the hardware units defining the backend.
auto RCU = llvm::make_unique<RetireControlUnit>(SM);
auto PRF = llvm::make_unique<RegisterFile>(SM, MRI, Opts.RegisterFileSize);
auto HWS = llvm::make_unique<Scheduler>(
SM, Opts.LoadQueueSize, Opts.StoreQueueSize, Opts.AssumeNoAlias);
// Create the pipeline and its stages.
auto P = llvm::make_unique<Pipeline>();
auto F = llvm::make_unique<FetchStage>(IB, SrcMgr);
auto D = llvm::make_unique<DispatchStage>(
STI, MRI, Opts.RegisterFileSize, Opts.DispatchWidth, *RCU, *PRF, *HWS);
auto R = llvm::make_unique<RetireStage>(*RCU, *PRF);
auto E = llvm::make_unique<ExecuteStage>(*RCU, *HWS);
// Add the hardware to the context.
addHardwareUnit(std::move(RCU));
addHardwareUnit(std::move(PRF));
addHardwareUnit(std::move(HWS));
// Build the pipeline.
P->appendStage(std::move(F));
P->appendStage(std::move(D));
P->appendStage(std::move(R));
P->appendStage(std::move(E));
return P;
}
} // namespace mca
|
