forked from OSchip/llvm-project
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
//===- MultiHazardRecognizer.cpp - Scheduler Support ----------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the MultiHazardRecognizer class, which is a wrapper
|
|
// for a set of ScheduleHazardRecognizer instances
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/MultiHazardRecognizer.h"
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include <algorithm>
|
|
#include <functional>
|
|
#include <numeric>
|
|
|
|
using namespace llvm;
|
|
|
|
void MultiHazardRecognizer::AddHazardRecognizer(
|
|
std::unique_ptr<ScheduleHazardRecognizer> &&R) {
|
|
MaxLookAhead = std::max(MaxLookAhead, R->getMaxLookAhead());
|
|
Recognizers.push_back(std::move(R));
|
|
}
|
|
|
|
bool MultiHazardRecognizer::atIssueLimit() const {
|
|
return llvm::any_of(Recognizers,
|
|
std::mem_fn(&ScheduleHazardRecognizer::atIssueLimit));
|
|
}
|
|
|
|
ScheduleHazardRecognizer::HazardType
|
|
MultiHazardRecognizer::getHazardType(SUnit *SU, int Stalls) {
|
|
for (auto &R : Recognizers) {
|
|
auto res = R->getHazardType(SU, Stalls);
|
|
if (res != NoHazard)
|
|
return res;
|
|
}
|
|
return NoHazard;
|
|
}
|
|
|
|
void MultiHazardRecognizer::Reset() {
|
|
for (auto &R : Recognizers)
|
|
R->Reset();
|
|
}
|
|
|
|
void MultiHazardRecognizer::EmitInstruction(SUnit *SU) {
|
|
for (auto &R : Recognizers)
|
|
R->EmitInstruction(SU);
|
|
}
|
|
|
|
void MultiHazardRecognizer::EmitInstruction(MachineInstr *MI) {
|
|
for (auto &R : Recognizers)
|
|
R->EmitInstruction(MI);
|
|
}
|
|
|
|
unsigned MultiHazardRecognizer::PreEmitNoops(SUnit *SU) {
|
|
auto MN = [=](unsigned a, std::unique_ptr<ScheduleHazardRecognizer> &R) {
|
|
return std::max(a, R->PreEmitNoops(SU));
|
|
};
|
|
return std::accumulate(Recognizers.begin(), Recognizers.end(), 0u, MN);
|
|
}
|
|
|
|
unsigned MultiHazardRecognizer::PreEmitNoops(MachineInstr *MI) {
|
|
auto MN = [=](unsigned a, std::unique_ptr<ScheduleHazardRecognizer> &R) {
|
|
return std::max(a, R->PreEmitNoops(MI));
|
|
};
|
|
return std::accumulate(Recognizers.begin(), Recognizers.end(), 0u, MN);
|
|
}
|
|
|
|
bool MultiHazardRecognizer::ShouldPreferAnother(SUnit *SU) {
|
|
auto SPA = [=](std::unique_ptr<ScheduleHazardRecognizer> &R) {
|
|
return R->ShouldPreferAnother(SU);
|
|
};
|
|
return llvm::any_of(Recognizers, SPA);
|
|
}
|
|
|
|
void MultiHazardRecognizer::AdvanceCycle() {
|
|
for (auto &R : Recognizers)
|
|
R->AdvanceCycle();
|
|
}
|
|
|
|
void MultiHazardRecognizer::RecedeCycle() {
|
|
for (auto &R : Recognizers)
|
|
R->RecedeCycle();
|
|
}
|
|
|
|
void MultiHazardRecognizer::EmitNoop() {
|
|
for (auto &R : Recognizers)
|
|
R->EmitNoop();
|
|
}
|