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faf675ce34
This patch removes the llvm:: prefix within llvm-exegesis where it is not necessary. This is most occurrences of the prefix within exegesis as exegesis is within the llvm namespace. This patch makes things more consistent as the vast majority of the code did not use the llvm:: prefix for anything.
117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
//===-- Analysis.h ----------------------------------------------*- C++ -*-===//
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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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/// \file
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/// Analysis output for benchmark results.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_EXEGESIS_ANALYSIS_H
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#define LLVM_TOOLS_LLVM_EXEGESIS_ANALYSIS_H
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#include "Clustering.h"
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#include "DisassemblerHelper.h"
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#include "SchedClassResolution.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/raw_ostream.h"
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#include <memory>
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namespace llvm {
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namespace exegesis {
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// A helper class to analyze benchmark results for a target.
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class Analysis {
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public:
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Analysis(const LLVMState &State,
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const BenchmarkClustering &Clustering,
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double AnalysisInconsistencyEpsilon,
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bool AnalysisDisplayUnstableOpcodes);
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// Prints a csv of instructions for each cluster.
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struct PrintClusters {};
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// Find potential errors in the scheduling information given measurements.
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struct PrintSchedClassInconsistencies {};
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template <typename Pass> Error run(raw_ostream &OS) const;
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private:
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using ClusterId = BenchmarkClustering::ClusterId;
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// Represents the intersection of a sched class and a cluster.
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class SchedClassCluster {
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public:
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const BenchmarkClustering::ClusterId &id() const {
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return ClusterId;
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}
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const std::vector<size_t> &getPointIds() const { return PointIds; }
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void addPoint(size_t PointId,
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const BenchmarkClustering &Clustering);
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// Return the cluster centroid.
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const SchedClassClusterCentroid &getCentroid() const { return Centroid; }
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// Returns true if the cluster representative measurements match that of SC.
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bool
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measurementsMatch(const MCSubtargetInfo &STI, const ResolvedSchedClass &SC,
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const BenchmarkClustering &Clustering,
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const double AnalysisInconsistencyEpsilonSquared_) const;
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private:
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BenchmarkClustering::ClusterId ClusterId;
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std::vector<size_t> PointIds;
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// Measurement stats for the points in the SchedClassCluster.
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SchedClassClusterCentroid Centroid;
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};
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void printInstructionRowCsv(size_t PointId, raw_ostream &OS) const;
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void printClusterRawHtml(const BenchmarkClustering::ClusterId &Id,
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StringRef display_name, raw_ostream &OS) const;
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void printPointHtml(const Benchmark &Point, raw_ostream &OS) const;
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void
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printSchedClassClustersHtml(const std::vector<SchedClassCluster> &Clusters,
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const ResolvedSchedClass &SC,
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raw_ostream &OS) const;
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void printSchedClassDescHtml(const ResolvedSchedClass &SC,
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raw_ostream &OS) const;
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// A pair of (Sched Class, indices of points that belong to the sched
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// class).
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struct ResolvedSchedClassAndPoints {
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explicit ResolvedSchedClassAndPoints(ResolvedSchedClass &&RSC);
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ResolvedSchedClass RSC;
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std::vector<size_t> PointIds;
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};
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// Builds a list of ResolvedSchedClassAndPoints.
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std::vector<ResolvedSchedClassAndPoints> makePointsPerSchedClass() const;
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template <typename EscapeTag, EscapeTag Tag>
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void writeSnippet(raw_ostream &OS, ArrayRef<uint8_t> Bytes,
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const char *Separator) const;
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const BenchmarkClustering &Clustering_;
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const LLVMState &State_;
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std::unique_ptr<DisassemblerHelper> DisasmHelper_;
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const double AnalysisInconsistencyEpsilonSquared_;
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const bool AnalysisDisplayUnstableOpcodes_;
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};
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} // namespace exegesis
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} // namespace llvm
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#endif // LLVM_TOOLS_LLVM_EXEGESIS_CLUSTERING_H
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