308571074c
This is an artifact from merging MLIR into LLVM, the file headers are now aligned with the rest of the project.
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//===- TestLoopParametricTiling.cpp --- Parametric loop tiling pass -------===//
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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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//
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// This file implements a pass to parametrically tile nests of standard loops.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/LoopOps/LoopOps.h"
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#include "mlir/IR/Builders.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/LoopUtils.h"
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#include "mlir/Transforms/Passes.h"
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using namespace mlir;
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namespace {
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// Extracts fixed-range loops for top-level loop nests with ranges defined in
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// the pass constructor. Assumes loops are permutable.
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class SimpleParametricLoopTilingPass
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: public FunctionPass<SimpleParametricLoopTilingPass> {
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public:
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SimpleParametricLoopTilingPass() = default;
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SimpleParametricLoopTilingPass(const SimpleParametricLoopTilingPass &) {}
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explicit SimpleParametricLoopTilingPass(ArrayRef<int64_t> outerLoopSizes) {
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sizes = outerLoopSizes;
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}
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void runOnFunction() override {
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FuncOp func = getFunction();
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func.walk([this](loop::ForOp op) {
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// Ignore nested loops.
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if (op.getParentRegion()->getParentOfType<loop::ForOp>())
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return;
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extractFixedOuterLoops(op, sizes);
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});
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}
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ListOption<int64_t> sizes{
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*this, "test-outer-loop-sizes", llvm::cl::MiscFlags::CommaSeparated,
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llvm::cl::desc(
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"fixed number of iterations that the outer loops should have")};
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};
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} // end namespace
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std::unique_ptr<OpPassBase<FuncOp>>
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mlir::createSimpleParametricTilingPass(ArrayRef<int64_t> outerLoopSizes) {
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return std::make_unique<SimpleParametricLoopTilingPass>(outerLoopSizes);
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}
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static PassRegistration<SimpleParametricLoopTilingPass>
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reg("test-extract-fixed-outer-loops",
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"test application of parametric tiling to the outer loops so that the "
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"ranges of outer loops become static");
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