mirror of https://github.com/llvm/torch-mlir
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
//===----------------------------------------------------------------------===//
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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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// Also available under a BSD-style license. See LICENSE.
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//
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//===----------------------------------------------------------------------===//
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#include "PassDetail.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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#include "torch-mlir/Dialect/Torch/IR/TorchOps.h"
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#include "torch-mlir/Dialect/Torch/Transforms/Passes.h"
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using namespace mlir;
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using namespace mlir::torch;
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using namespace mlir::torch::Torch;
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namespace {
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class RecomposeSliceCopy_ : public OpRewritePattern<AtenCopy_Op> {
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public:
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using OpRewritePattern::OpRewritePattern;
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LogicalResult matchAndRewrite(AtenCopy_Op op,
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PatternRewriter &rewriter) const override {
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if (!op.getSelf().getDefiningOp() ||
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!isa<AtenSliceTensorOp>(op.getSelf().getDefiningOp()))
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return failure();
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auto sliceOp = cast<AtenSliceTensorOp>(op.getSelf().getDefiningOp());
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// Get indices
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int64_t dim;
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if (!matchPattern(sliceOp.getDim(), m_TorchConstantInt(&dim)))
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return failure();
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int64_t end;
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if (!matchPattern(sliceOp.getEnd(), m_TorchConstantInt(&end)))
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return failure();
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Value newEnd = sliceOp.getEnd();
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if (end < 0) {
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Value dimSize = rewriter.create<AtenSizeIntOp>(
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op.getLoc(), sliceOp.getSelf(), sliceOp.getDim());
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newEnd =
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rewriter.create<AtenAddIntOp>(op.getLoc(), dimSize, sliceOp.getEnd());
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}
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Value noneVal = rewriter.create<ConstantNoneOp>(op.getLoc());
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Value falseVal = rewriter.create<ConstantBoolOp>(op.getLoc(), false);
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// Create IndexPut_Op
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BaseTensorType tensorType = op->getResultTypes()[0].cast<BaseTensorType>();
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Value range = rewriter.create<AtenArangeStartStepOp>(
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op.getLoc(), tensorType, sliceOp.getStart(), newEnd, sliceOp.getStep(),
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/*dtype=*/noneVal, /*layout=*/noneVal, /*device=*/noneVal,
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/*pin_memory=*/noneVal);
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SmallVector<Value> indicesVector;
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for (auto i = 0; i < dim - 1; i++)
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indicesVector.push_back(noneVal);
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indicesVector.push_back(range);
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Value indices = rewriter.create<PrimListConstructOp>(
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op.getLoc(),
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Torch::ListType::get(op->getContext(),
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Torch::OptionalType::get(tensorType)),
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indicesVector);
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rewriter.replaceOpWithNewOp<Aten_IndexPutImpl_Op>(
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op, op->getResultTypes(), sliceOp.getSelf(), indices, op.getSrc(),
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/*accumulate=*/falseVal, /*unsafe=*/falseVal);
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return success();
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}
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};
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} // namespace
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namespace {
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class RecomposeComplexOps
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: public DecomposeComplexOpsBase<RecomposeComplexOps> {
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public:
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RecomposeComplexOps() = default;
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void runOnOperation() override {
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MLIRContext *context = &getContext();
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RewritePatternSet patterns(context);
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// pattern.add calls go here
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patterns.add<RecomposeSliceCopy_>(context);
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GreedyRewriteConfig config;
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config.useTopDownTraversal = true;
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config.maxIterations = GreedyRewriteConfig::kNoLimit;
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if (failed(applyPatternsAndFoldGreedily(getOperation(), std::move(patterns),
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config))) {
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return signalPassFailure();
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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::torch::Torch::createRecomposeComplexOps() {
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return std::make_unique<RecomposeComplexOps>();
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}
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