55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
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//===- LoopCoalescing.cpp - Pass transforming loop nests into single loops-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/Affine/Passes.h"
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#include "mlir/Dialect/Affine/IR/AffineOps.h"
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#include "mlir/Dialect/Affine/LoopUtils.h"
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#include "mlir/Dialect/Arith/IR/Arith.h"
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#include "mlir/Dialect/Func/IR/FuncOps.h"
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#include "mlir/Dialect/SCF/IR/SCF.h"
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#include "mlir/Dialect/SCF/Utils/Utils.h"
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#include "mlir/Transforms/Passes.h"
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#include "mlir/Transforms/RegionUtils.h"
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#include "llvm/Support/Debug.h"
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namespace mlir {
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namespace affine {
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#define GEN_PASS_DEF_LOOPCOALESCING
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#include "mlir/Dialect/Affine/Passes.h.inc"
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} // namespace affine
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} // namespace mlir
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#define PASS_NAME "loop-coalescing"
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#define DEBUG_TYPE PASS_NAME
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using namespace mlir;
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using namespace mlir::affine;
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namespace {
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struct LoopCoalescingPass
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: public affine::impl::LoopCoalescingBase<LoopCoalescingPass> {
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void runOnOperation() override {
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func::FuncOp func = getOperation();
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func.walk<WalkOrder::PreOrder>([](Operation *op) {
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if (auto scfForOp = dyn_cast<scf::ForOp>(op))
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(void)coalescePerfectlyNestedLoops(scfForOp);
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else if (auto affineForOp = dyn_cast<AffineForOp>(op))
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(void)coalescePerfectlyNestedLoops(affineForOp);
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});
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}
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};
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} // namespace
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std::unique_ptr<OperationPass<func::FuncOp>>
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mlir::affine::createLoopCoalescingPass() {
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return std::make_unique<LoopCoalescingPass>();
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}
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