| //===- AffineParallelize.cpp - Affineparallelize Pass---------------------===// |
| // |
| // 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 a parallelizer for affine loop nests that is able to |
| // perform inner or outer loop parallelization. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "PassDetail.h" |
| #include "mlir/Analysis/AffineStructures.h" |
| #include "mlir/Analysis/LoopAnalysis.h" |
| #include "mlir/Analysis/Utils.h" |
| #include "mlir/Dialect/Affine/IR/AffineOps.h" |
| #include "mlir/Dialect/Affine/IR/AffineValueMap.h" |
| #include "mlir/Dialect/Affine/Passes.h" |
| #include "mlir/Dialect/Affine/Passes.h.inc" |
| #include "mlir/Dialect/Affine/Utils.h" |
| #include "mlir/Transforms/LoopUtils.h" |
| #include "llvm/Support/Debug.h" |
| |
| #define DEBUG_TYPE "affine-parallel" |
| |
| using namespace mlir; |
| |
| namespace { |
| /// Convert all parallel affine.for op into 1-D affine.parallel op. |
| struct AffineParallelize : public AffineParallelizeBase<AffineParallelize> { |
| void runOnFunction() override; |
| }; |
| } // namespace |
| |
| void AffineParallelize::runOnFunction() { |
| FuncOp f = getFunction(); |
| SmallVector<AffineForOp, 8> parallelizableLoops; |
| f.walk([&](AffineForOp loop) { |
| if (isLoopParallel(loop)) |
| parallelizableLoops.push_back(loop); |
| }); |
| for (AffineForOp loop : parallelizableLoops) |
| affineParallelize(loop); |
| } |
| |
| std::unique_ptr<OperationPass<FuncOp>> mlir::createAffineParallelizePass() { |
| return std::make_unique<AffineParallelize>(); |
| } |