SkipStages.h

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#ifndef HALIDE_SKIP_STAGES
#define HALIDE_SKIP_STAGES
 
#include <map>
#include <string>
#include <vector>
 
#include "Expr.h"
 
/** \file
 * Defines a pass that dynamically avoids realizing unnecessary stages.
 */
 
namespace Halide {
namespace Internal {
 
class Function;
 
/** Avoid computing certain stages if we can infer a runtime condition
 * to check that tells us they won't be used. Does this by analyzing
 * all reads of each buffer allocated, and inferring some condition
 * that tells us if the reads occur. If the condition is non-trivial,
 * inject ifs that guard the production. */
Stmt skip_stages(const Stmt &s,
                 const std::vector<Function> &outputs,
                 const std::vector<std::vector<std::string>> &order,
                 const std::map<std::string, Function> &env);
 
}  // namespace Internal
}  // namespace Halide
 
#endif