blob: 51b85bf81984045e50405a1b20779c5aabb550f7 (
plain)
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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
//===--------------------- CustomBehaviour.cpp ------------------*- 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 methods from the CustomBehaviour interface.
///
//===----------------------------------------------------------------------===//
#include "llvm/MCA/CustomBehaviour.h"
#include "llvm/MCA/Instruction.h"
namespace llvm {
namespace mca {
CustomBehaviour::~CustomBehaviour() = default;
unsigned CustomBehaviour::checkCustomHazard(ArrayRef<InstRef> IssuedInst,
const InstRef &IR) {
// 0 signifies that there are no hazards that need to be waited on
return 0;
}
std::vector<std::unique_ptr<View>>
CustomBehaviour::getStartViews(llvm::MCInstPrinter &IP,
llvm::ArrayRef<llvm::MCInst> Insts) {
return std::vector<std::unique_ptr<View>>();
}
std::vector<std::unique_ptr<View>>
CustomBehaviour::getPostInstrInfoViews(llvm::MCInstPrinter &IP,
llvm::ArrayRef<llvm::MCInst> Insts) {
return std::vector<std::unique_ptr<View>>();
}
std::vector<std::unique_ptr<View>>
CustomBehaviour::getEndViews(llvm::MCInstPrinter &IP,
llvm::ArrayRef<llvm::MCInst> Insts) {
return std::vector<std::unique_ptr<View>>();
}
const llvm::StringRef LatencyInstrument::DESC_NAME = "LATENCY";
bool InstrumentManager::supportsInstrumentType(StringRef Type) const {
return EnableInstruments && Type == LatencyInstrument::DESC_NAME;
}
bool InstrumentManager::canCustomize(const ArrayRef<Instrument *> IVec) const {
for (const auto I : IVec) {
if (I->getDesc() == LatencyInstrument::DESC_NAME) {
auto LatInst = static_cast<LatencyInstrument *>(I);
return LatInst->hasValue();
}
}
return false;
}
void InstrumentManager::customize(const ArrayRef<Instrument *> IVec,
InstrDesc &ID) const {
for (const auto I : IVec) {
if (I->getDesc() == LatencyInstrument::DESC_NAME) {
auto LatInst = static_cast<LatencyInstrument *>(I);
if (LatInst->hasValue()) {
unsigned Latency = LatInst->getLatency();
// TODO Allow to customize a subset of ID.Writes
for (auto &W : ID.Writes)
W.Latency = Latency;
ID.MaxLatency = Latency;
}
}
}
}
UniqueInstrument InstrumentManager::createInstrument(StringRef Desc,
StringRef Data) {
if (EnableInstruments) {
if (Desc == LatencyInstrument::DESC_NAME)
return std::make_unique<LatencyInstrument>(Data);
}
return std::make_unique<Instrument>(Desc, Data);
}
SmallVector<UniqueInstrument>
InstrumentManager::createInstruments(const MCInst &Inst) {
return SmallVector<UniqueInstrument>();
}
unsigned InstrumentManager::getSchedClassID(
const MCInstrInfo &MCII, const MCInst &MCI,
const llvm::SmallVector<Instrument *> &IVec) const {
return MCII.get(MCI.getOpcode()).getSchedClass();
}
} // namespace mca
} // namespace llvm
|
