llvm/mlir/lib/Dialect/Math/Transforms/UpliftToFMA.cpp

//===- UpliftToFMA.cpp - Arith to FMA uplifting ---------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements uplifting from arith ops to math.fma.
//
//===----------------------------------------------------------------------===//

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

namespace mlir::math {
#define GEN_PASS_DEF_MATHUPLIFTTOFMA
#include "mlir/Dialect/Math/Transforms/Passes.h.inc"
} // namespace mlir::math

usingnamespacemlir;

template <typename Op>
static bool isValidForFMA(Op op) { … }

namespace {

struct UpliftFma final : OpRewritePattern<arith::AddFOp> { … };

struct MathUpliftToFMA final
    : math::impl::MathUpliftToFMABase<MathUpliftToFMA> { … };

} // namespace

void mlir::populateUpliftToFMAPatterns(RewritePatternSet &patterns) { … }