internal/ceres/codegen/optimize_expression_graph.cc

// Ceres Solver - A fast non-linear least squares minimizer
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// http://code.google.com/p/ceres-solver/
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// Author: darius.rueckert@fau.de (Darius Rueckert)

#include "ceres/codegen/internal/optimize_expression_graph.h"

#include "ceres/codegen/internal/eliminate_nops.h"
#include "glog/logging.h"
namespace ceres {
namespace internal {

OptimizeExpressionGraphSummary OptimizeExpressionGraph(
    const OptimizeExpressionGraphOptions& options, ExpressionGraph* graph) {
  OptimizeExpressionGraphSummary summary;
  summary.num_iterations = 0;
  while (summary.num_iterations < options.max_num_iterations) {
    summary.num_iterations++;
    bool changed = false;

    if (options.eliminate_nops) {
      auto pass_summary = EliminateNops(graph);
      changed |= pass_summary.expression_graph_changed;
      summary.summaries.push_back(pass_summary);
    }

    if (!changed) {
      break;
    }
  }
  return summary;
}

}  // namespace internal
}  // namespace ceres