llvm/mlir/lib/Dialect/SCF/Transforms/ForToWhile.cpp

//===- ForToWhile.cpp - scf.for to scf.while loop conversion --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Transforms SCF.ForOp's into SCF.WhileOp's.
//
//===----------------------------------------------------------------------===//

#include "mlir/Dialect/SCF/Transforms/Passes.h"

#include "mlir/Dialect/Arith/IR/Arith.h"
#include "mlir/Dialect/SCF/IR/SCF.h"
#include "mlir/Dialect/SCF/Transforms/Transforms.h"
#include "mlir/IR/PatternMatch.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"

namespace mlir {
#define GEN_PASS_DEF_SCFFORTOWHILELOOP
#include "mlir/Dialect/SCF/Transforms/Passes.h.inc"
} // namespace mlir

usingnamespacellvm;
usingnamespacemlir;
ForOp;
WhileOp;

namespace {

struct ForLoopLoweringPattern : public OpRewritePattern<ForOp> { … };

struct ForToWhileLoop : public impl::SCFForToWhileLoopBase<ForToWhileLoop> { … };
} // namespace

std::unique_ptr<Pass> mlir::createForToWhileLoopPass() { … }