f1b100c77b
These directives were temporary during the generalization of FunctionPass/ModulePass to OpPass. PiperOrigin-RevId: 268970259
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
//===- TestLoopParametricTiling.cpp --- Parametric loop tiling pass -------===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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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static llvm::cl::list<int> clOuterLoopSizes(
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"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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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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explicit SimpleParametricLoopTilingPass(ArrayRef<int64_t> outerLoopSizes)
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: sizes(outerLoopSizes.begin(), outerLoopSizes.end()) {}
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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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SmallVector<int64_t, 4> sizes;
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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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[] {
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auto pass = std::make_unique<SimpleParametricLoopTilingPass>(
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ArrayRef<int64_t>{});
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pass->sizes.assign(clOuterLoopSizes.begin(), clOuterLoopSizes.end());
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return pass;
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});
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