mirror of https://github.com/llvm/torch-mlir
85 lines
3.3 KiB
C++
85 lines
3.3 KiB
C++
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//===----------------------------------------------------------------------===//
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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 "npcomp/Conversion/TCFToTCP/TCFToTCP.h"
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#include "../PassDetail.h"
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#include "mlir/Dialect/Shape/IR/Shape.h"
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#include "mlir/Dialect/Traits.h"
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#include "mlir/Transforms/DialectConversion.h"
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#include "npcomp/Dialect/TCF/IR/TCFOps.h"
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#include "npcomp/Dialect/TCP/IR/TCPOps.h"
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using namespace mlir;
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using namespace mlir::NPCOMP;
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namespace {
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class ConvertAdd : public OpRewritePattern<tcf::AddOp> {
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public:
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using OpRewritePattern::OpRewritePattern;
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LogicalResult matchAndRewrite(tcf::AddOp op,
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PatternRewriter &rewriter) const override {
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auto lhsType = op.lhs().getType().dyn_cast<RankedTensorType>();
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auto rhsType = op.rhs().getType().dyn_cast<RankedTensorType>();
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if (!lhsType || !rhsType) {
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return rewriter.notifyMatchFailure(op, "requires ranked tensors");
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}
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Value lhsShape = rewriter.create<shape::ShapeOfOp>(op.getLoc(), op.lhs());
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Value rhsShape = rewriter.create<shape::ShapeOfOp>(op.getLoc(), op.rhs());
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Value broadcastedShape = rewriter.create<shape::BroadcastOp>(
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op.getLoc(), lhsShape, rhsShape, /*error=*/nullptr);
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Value witness =
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rewriter.create<tcp::AbortIfErrorOp>(op.getLoc(), broadcastedShape);
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tcp::IslandOp island =
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rewriter.create<tcp::IslandOp>(op.getLoc(), op.getType(), witness);
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Region &body = island.body();
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Block *bodyBlock = new Block;
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body.push_back(bodyBlock);
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OpBuilder::InsertionGuard guard(rewriter);
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rewriter.setInsertionPoint(bodyBlock, bodyBlock->begin());
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// TODO: It's annoying to do the dynamic broadcast above then
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// do the static transfer function here. Would be nice if they could
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// somehow be unified.
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SmallVector<int64_t, 6> broadcastedStaticShape;
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OpTrait::util::getBroadcastedShape(lhsType.getShape(), rhsType.getShape(),
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broadcastedStaticShape);
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auto resultType =
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RankedTensorType::get(broadcastedStaticShape, lhsType.getElementType());
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Value lhsBroadcasted = rewriter.create<tcp::BroadcastToOp>(
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op.getLoc(), resultType, op.lhs(), broadcastedShape);
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Value rhsBroadcasted = rewriter.create<tcp::BroadcastToOp>(
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op.getLoc(), resultType, op.rhs(), broadcastedShape);
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Value add = rewriter.create<tcp::AddOp>(op.getLoc(), op.getType(),
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lhsBroadcasted, rhsBroadcasted);
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rewriter.create<tcp::YieldOp>(op.getLoc(), add);
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rewriter.replaceOp(op, island.getResults());
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return success();
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}
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};
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}
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namespace {
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class ConvertTCFToTCP : public ConvertTCFToTCPBase<ConvertTCFToTCP> {
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public:
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void runOnOperation() {
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ModuleOp module = getOperation();
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MLIRContext *context = &getContext();
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OwningRewritePatternList patterns;
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patterns.insert<ConvertAdd>(context);
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(void)applyPatternsAndFoldGreedily(module, patterns);
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}
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};
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} // namespace
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std::unique_ptr<OperationPass<ModuleOp>>
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mlir::NPCOMP::createConvertTCFToTCPPass() {
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return std::make_unique<ConvertTCFToTCP>();
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}
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