93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
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//===- MultiHazardRecognizer.cpp - Scheduler Support ----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the MultiHazardRecognizer class, which is a wrapper
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// for a set of ScheduleHazardRecognizer instances
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MultiHazardRecognizer.h"
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#include "llvm/ADT/STLExtras.h"
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#include <algorithm>
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#include <functional>
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#include <numeric>
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using namespace llvm;
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void MultiHazardRecognizer::AddHazardRecognizer(
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std::unique_ptr<ScheduleHazardRecognizer> &&R) {
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MaxLookAhead = std::max(MaxLookAhead, R->getMaxLookAhead());
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Recognizers.push_back(std::move(R));
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}
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bool MultiHazardRecognizer::atIssueLimit() const {
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return llvm::any_of(Recognizers,
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std::mem_fn(&ScheduleHazardRecognizer::atIssueLimit));
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}
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ScheduleHazardRecognizer::HazardType
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MultiHazardRecognizer::getHazardType(SUnit *SU, int Stalls) {
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for (auto &R : Recognizers) {
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auto res = R->getHazardType(SU, Stalls);
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if (res != NoHazard)
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return res;
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}
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return NoHazard;
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}
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void MultiHazardRecognizer::Reset() {
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for (auto &R : Recognizers)
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R->Reset();
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}
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void MultiHazardRecognizer::EmitInstruction(SUnit *SU) {
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for (auto &R : Recognizers)
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R->EmitInstruction(SU);
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}
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void MultiHazardRecognizer::EmitInstruction(MachineInstr *MI) {
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for (auto &R : Recognizers)
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R->EmitInstruction(MI);
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}
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unsigned MultiHazardRecognizer::PreEmitNoops(SUnit *SU) {
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auto MN = [=](unsigned a, std::unique_ptr<ScheduleHazardRecognizer> &R) {
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return std::max(a, R->PreEmitNoops(SU));
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};
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return std::accumulate(Recognizers.begin(), Recognizers.end(), 0u, MN);
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}
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unsigned MultiHazardRecognizer::PreEmitNoops(MachineInstr *MI) {
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auto MN = [=](unsigned a, std::unique_ptr<ScheduleHazardRecognizer> &R) {
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return std::max(a, R->PreEmitNoops(MI));
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};
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return std::accumulate(Recognizers.begin(), Recognizers.end(), 0u, MN);
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}
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bool MultiHazardRecognizer::ShouldPreferAnother(SUnit *SU) {
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auto SPA = [=](std::unique_ptr<ScheduleHazardRecognizer> &R) {
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return R->ShouldPreferAnother(SU);
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};
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return llvm::any_of(Recognizers, SPA);
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}
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void MultiHazardRecognizer::AdvanceCycle() {
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for (auto &R : Recognizers)
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R->AdvanceCycle();
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}
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void MultiHazardRecognizer::RecedeCycle() {
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for (auto &R : Recognizers)
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R->RecedeCycle();
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}
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void MultiHazardRecognizer::EmitNoop() {
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for (auto &R : Recognizers)
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R->EmitNoop();
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}
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