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Codegen Optimizer API

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This patch adds the classes Optimizer and OptimizationPass, which
define the core API of the codegen optimization.

A single (trivial) optimization is added that removes NOP
expressions from a graph.

Change-Id: I0430d6ffc61a474f997475ff787a81a9c69cfe23
This commit is contained in:
Darius Rueckert
2020-02-12 09:21:42 +01:00
parent 90799e29e1
commit 13c7a22cee
8 changed files with 420 additions and 0 deletions
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include/ceres/codegen/internal/optimization_pass_summary.h
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// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2020 Google Inc. All rights reserved.
// http://code.google.com/p/ceres-solver/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Author: darius.rueckert@fau.de (Darius Rueckert)
//
#ifndef CERES_PUBLIC_CODEGEN_INTERNAL_OPTIMIZATION_PASS_SUMMARY_H_
#define CERES_PUBLIC_CODEGEN_INTERNAL_OPTIMIZATION_PASS_SUMMARY_H_
#include <string>
namespace ceres {
namespace internal {
struct OptimizationPassSummary {
bool expression_graph_changed = false;
std::string optimization_pass_name;
int num_expressions_replaced_by_nop = 0;
int num_expressions_removed = 0;
int num_expressions_inserted = 0;
int num_expressions_modified = 0;
};
} // namespace internal
} // namespace ceres
#endif // CERES_PUBLIC_CODEGEN_INTERNAL_OPTIMIZATION_PASS_SUMMARY_H_