1//===- ArmNeon2dToIntr.cpp - convert Arm Neon 2d ops to intrinsics --------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "mlir/Conversion/ArmNeon2dToIntr/ArmNeon2dToIntr.h"
10
11#include "mlir/Dialect/ArmNeon/ArmNeonDialect.h"
12#include "mlir/Dialect/Vector/IR/VectorOps.h"
13#include "mlir/IR/PatternMatch.h"
14#include "mlir/Pass/Pass.h"
15#include "mlir/Pass/PassRegistry.h"
16#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
17
18namespace mlir {
19#define GEN_PASS_DEF_CONVERTARMNEON2DTOINTRPASS
20#include "mlir/Conversion/Passes.h.inc"
21} // namespace mlir
22
23using namespace mlir;
24using namespace mlir::arm_neon;
25
26namespace {
27
28class Sdot2dLoweringPattern : public OpRewritePattern<Sdot2dOp> {
29public:
30 using OpRewritePattern::OpRewritePattern;
31
32 /// Convert to 1-dimensional vector type to match the requirements of
33 /// arm.neon.intr.sdot
34 LogicalResult matchAndRewrite(Sdot2dOp op,
35 PatternRewriter &rewriter) const override {
36 Type elemType = cast<VectorType>(op.getB().getType()).getElementType();
37 int length = cast<VectorType>(op.getB().getType()).getShape()[0] *
38 Sdot2dOp::kReductionSize;
39 VectorType flattenedVectorType = VectorType::get({length}, elemType);
40 Value b2d = op.getB();
41 Value c2d = op.getC();
42 Location loc = op.getLoc();
43 Value b1d =
44 rewriter.create<vector::ShapeCastOp>(loc, flattenedVectorType, b2d);
45 Value c1d =
46 rewriter.create<vector::ShapeCastOp>(loc, flattenedVectorType, c2d);
47 Value newOp = rewriter.create<SdotOp>(loc, op.getRes().getType(), op.getA(),
48 b1d, c1d);
49 rewriter.replaceOp(op, {newOp});
50 return success();
51 }
52};
53
54class ConvertArmNeon2dToIntr
55 : public impl::ConvertArmNeon2dToIntrPassBase<ConvertArmNeon2dToIntr> {
56 void runOnOperation() override {
57 auto *context = &getContext();
58
59 RewritePatternSet patterns(context);
60 populateConvertArmNeon2dToIntrPatterns(patterns);
61
62 if (failed(applyPatternsGreedily(getOperation(), std::move(patterns))))
63 return signalPassFailure();
64 }
65};
66
67} // namespace
68
69void mlir::populateConvertArmNeon2dToIntrPatterns(RewritePatternSet &patterns) {
70 patterns.add<Sdot2dLoweringPattern>(arg: patterns.getContext());
71}
72

source code of mlir/lib/Conversion/ArmNeon2dToIntr/ArmNeon2dToIntr.cpp