https://github.com/halide/Halide
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Tip revision: 46d8e9e0cdae456489f1eddfd6d829956fc3c843 authored by Steven Johnson on 14 February 2018, 23:10:30 UTC
Merge pull request #2750 from halide/srj-llvm
Tip revision: 46d8e9e
PartitionLoops.h
#ifndef PARTITION_LOOPS_H
#define PARTITION_LOOPS_H

/** \file
 * Defines a lowering pass that partitions loop bodies into three
 * to handle boundary conditions: A prologue, a simplified
 * steady-stage, and an epilogue.
 */

#include "IR.h"

namespace Halide {
namespace Internal {

/** Return true if an expression uses a likely tag. */
bool has_likely_tag(Expr e);

/** Partitions loop bodies into a prologue, a steady state, and an
 * epilogue. Finds the steady state by hunting for use of clamped
 * ramps, or the 'likely' intrinsic. */
Stmt partition_loops(Stmt s);

}
}

#endif
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