forked from OSchip/llvm-project
72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
//===- ArmNeon2dToIntr.cpp - convert Arm Neon 2d ops to intrinsics --------===//
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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/Conversion/ArmNeon2dToIntr/ArmNeon2dToIntr.h"
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#include "../PassDetail.h"
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#include "mlir/Dialect/ArmNeon/ArmNeonDialect.h"
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#include "mlir/Dialect/Vector/IR/VectorOps.h"
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#include "mlir/IR/PatternMatch.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Pass/PassRegistry.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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using namespace mlir;
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using namespace mlir::arm_neon;
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namespace {
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class Sdot2dLoweringPattern : public OpRewritePattern<Sdot2dOp> {
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public:
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using OpRewritePattern::OpRewritePattern;
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/// Convert to 1-dimensional vector type to match the requirements of
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/// arm.neon.intr.sdot
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LogicalResult matchAndRewrite(Sdot2dOp op,
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PatternRewriter &rewriter) const override {
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Type elemType = op.b().getType().cast<VectorType>().getElementType();
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int length = op.b().getType().cast<VectorType>().getShape()[0] *
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Sdot2dOp::kReductionSize;
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VectorType flattenedVectorType = VectorType::get({length}, elemType);
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Value b2d = op.b();
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Value c2d = op.c();
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Location loc = op.getLoc();
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Value b1d =
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rewriter.create<vector::ShapeCastOp>(loc, flattenedVectorType, b2d);
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Value c1d =
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rewriter.create<vector::ShapeCastOp>(loc, flattenedVectorType, c2d);
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Value newOp =
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rewriter.create<SdotOp>(loc, op.res().getType(), op.a(), b1d, c1d);
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rewriter.replaceOp(op, {newOp});
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return success();
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}
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};
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class ConvertArmNeon2dToIntr
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: public ConvertArmNeon2dToIntrBase<ConvertArmNeon2dToIntr> {
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void runOnOperation() override {
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auto *context = &getContext();
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RewritePatternSet patterns(context);
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populateConvertArmNeon2dToIntrPatterns(patterns);
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if (failed(
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applyPatternsAndFoldGreedily(getOperation(), std::move(patterns))))
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return signalPassFailure();
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}
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};
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} // namespace
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void mlir::populateConvertArmNeon2dToIntrPatterns(RewritePatternSet &patterns) {
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patterns.add<Sdot2dLoweringPattern>(patterns.getContext());
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}
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std::unique_ptr<Pass> mlir::createConvertArmNeon2dToIntrPass() {
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return std::make_unique<ConvertArmNeon2dToIntr>();
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}
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