torch-mlir/lib/Conversion/TorchOnnxToTorch/DefaultDomainGtoP.cpp

2008 lines
90 KiB
C++

//===------------------------------------------------------------*- C++ -*-===//
//
// This file is licensed under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Also available under a BSD-style license. See LICENSE.
//
//===----------------------------------------------------------------------===//
#include "torch-mlir/Conversion/TorchOnnxToTorch/Patterns.h"
#include "torch-mlir/Conversion/TorchOnnxToTorch/Utils.h"
#include "torch-mlir/Dialect/Torch/Utils/Utils.h"
using namespace mlir;
using namespace mlir::torch;
using namespace mlir::torch::onnx_c;
// Simple rewrites for the default domain.
// See: https://onnx.ai/onnx/operators/
// For operators that are effectively version invariant, we register with
// sinceVersion==1. We interpret this to include the following spec
// diffs that are irrelevant to this level of lowering:
// * Supported element types.
// * Limited broadcasting to full broadcasting support.
//
// There are a lot of spec revisions that basically generalized elementwise
// to be more normal and a direct translation vs a special case. This
// results in a lot of ONNX test cases that all reduce to the exact same
// thing here, so we simplify.
void mlir::torch::onnx_c::populateDefaultDomainGtoP(
OnnxCustomOpConversionPattern &patterns) {
patterns.onOp(
"HardSigmoid", 6,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value tensorOperand;
float alpha, beta;
if (binder.tensorOperand(tensorOperand) ||
binder.f32FloatAttr(alpha, "alpha", 0.2f) ||
binder.f32FloatAttr(beta, "beta", 0.5f) ||
binder.tensorResultType(resultType))
return failure();
// HardSigmoid computes the following expression:
// max(0, min(1, alpha * x + beta))
Value constAlpha = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(alpha));
Value constBeta = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(beta));
// Expression: alpha * x + beta
Value alpha_x_plus_beta = rewriter.create<Torch::AtenAddScalarOp>(
binder.getLoc(), resultType, tensorOperand, constBeta,
/*alpha=*/constAlpha);
// Expression: min(1, alpha * x + beta)
Value constantOne = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(1));
Value oneTensor = createRank0Tensor(rewriter, binder.getLoc(),
resultType, constantOne);
Value minExpression = rewriter.create<Torch::AtenMinimumOp>(
binder.getLoc(), resultType, oneTensor, alpha_x_plus_beta);
// Expression: max(0, min(1, alpha * x + beta))
Value constantZero = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(0));
Value zeroTensor = createRank0Tensor(rewriter, binder.getLoc(),
resultType, constantZero);
rewriter.replaceOpWithNewOp<Torch::AtenMaximumOp>(
binder.op, resultType, zeroTensor, minExpression);
return success();
});
patterns.onOp(
"Gelu", 20, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Value operand;
Torch::ValueTensorType resultType;
std::string approximate;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType) ||
binder.customOpNameStringAttr(approximate, "approximate", "none"))
return failure();
Value vApproximate = rewriter.create<Torch::ConstantStrOp>(
binder.getLoc(), rewriter.getType<Torch::StringType>(),
rewriter.getStringAttr(approximate));
rewriter.replaceOpWithNewOp<Torch::AtenGeluOp>(binder.op, resultType,
operand, vApproximate);
return success();
});
patterns.onOp(
"GridSample", 17,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value input;
Value grid;
if (binder.tensorOperandAtIndex(input, 0) ||
binder.tensorOperandAtIndex(grid, 1) ||
binder.tensorResultType(resultType))
return rewriter.notifyMatchFailure(
binder.op, "operand grid_sampler bind failure");
auto inputTensorType = cast<Torch::ValueTensorType>(input.getType());
ArrayRef<int64_t> inputShape = inputTensorType.getSizes();
uint32_t inputRank = inputShape.size();
auto gridTensorType = cast<Torch::ValueTensorType>(grid.getType());
ArrayRef<int64_t> gridShape = gridTensorType.getSizes();
uint32_t gridRank = gridShape.size();
if (inputRank != 4)
return rewriter.notifyMatchFailure(binder.op,
"only input rank 4 supported");
if (gridRank != 4)
return rewriter.notifyMatchFailure(binder.op,
"only grid rank 4 supported");
if (inputShape[0] != gridShape[0])
return rewriter.notifyMatchFailure(
binder.op, "N must be same for input and grid");
if (gridShape[3] != 2)
return rewriter.notifyMatchFailure(binder.op,
"gridShape[3] expected to be 2");
std::string iModeString;
int64_t iModeInt;
if (binder.customOpNameStringAttr(iModeString, "mode", "linear"))
return rewriter.notifyMatchFailure(binder.op, "mode bind failure");
if (iModeString == "linear" || iModeString == "bilinear") {
iModeInt = 0;
} else if (iModeString == "nearest") {
iModeInt = 1;
} else {
return rewriter.notifyMatchFailure(
binder.op, "currently only mode : linear and nearest supported");
}
std::string padding;
if (binder.customOpNameStringAttr(padding, "padding_mode", "zeros"))
return rewriter.notifyMatchFailure(binder.op,
"padding_mode bind failure");
if (padding != "zeros")
return rewriter.notifyMatchFailure(
binder.op, "currently only padding_mode : zeros supported");
int64_t align;
if (binder.s64IntegerAttr(align, "align_corners", 0))
return rewriter.notifyMatchFailure(binder.op,
"align_corners bind failure");
Value interpolationMode = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), iModeInt));
Value paddingMode = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), 0));
bool alignMode = align;
Value alignCorners = rewriter.create<Torch::ConstantBoolOp>(
binder.getLoc(), rewriter.getType<Torch::BoolType>(),
rewriter.getBoolAttr(alignMode));
rewriter.replaceOpWithNewOp<Torch::AtenGridSamplerOp>(
binder.op, resultType, input, grid, interpolationMode, paddingMode,
alignCorners);
return success();
});
patterns.onOp(
"If", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Value conditionTensor;
if (binder.tensorOperand(conditionTensor)) {
return rewriter.notifyMatchFailure(binder.op,
"condition bind failure");
}
auto conditionType =
cast<Torch::ValueTensorType>(conditionTensor.getType());
if (!conditionType || conditionType.getSizes().size() != 1)
return rewriter.notifyMatchFailure(
binder.op, "condition must have one single element per "
"https://onnx.ai/onnx/operators/onnx__If.html");
auto conditionInt = rewriter.create<Torch::AtenItemOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
conditionTensor);
auto conditionBool = rewriter.create<Torch::AtenBoolIntOp>(
binder.getLoc(), rewriter.getType<Torch::BoolType>(), conditionInt);
llvm::SmallVector<mlir::Type> resultTypes;
if (binder.tensorResultTypes(resultTypes)) {
return rewriter.notifyMatchFailure(binder.op,
"result type bind failure");
}
Region *thenRegion, *elseRegion;
if (binder.getRegionAtIndex(elseRegion, 0) ||
binder.getRegionAtIndex(thenRegion, 1)) {
return rewriter.notifyMatchFailure(binder.op, "region bind failure");
}
auto primIfOp = rewriter.create<Torch::PrimIfOp>(
binder.getLoc(), TypeRange(resultTypes), conditionBool);
auto inlineIfCase = [&](Region &srcRegion, Region &dstRegion) {
rewriter.inlineRegionBefore(srcRegion, dstRegion, dstRegion.begin());
};
inlineIfCase(*thenRegion, primIfOp.getThenRegion());
inlineIfCase(*elseRegion, primIfOp.getElseRegion());
auto replaceTerminator = [&](Region &region) {
PatternRewriter::InsertionGuard guard(rewriter);
Operation *terminator = region.front().getTerminator();
rewriter.setInsertionPoint(terminator);
rewriter.replaceOpWithNewOp<Torch::PrimIfYieldOp>(
terminator, terminator->getOperands());
};
replaceTerminator(primIfOp.getThenRegion());
replaceTerminator(primIfOp.getElseRegion());
rewriter.replaceOp(binder.op, primIfOp.getResults());
return success();
});
patterns.onOp("Less", 13,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenLtTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp("LessOrEqual", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenLeTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp("Log", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenLogOp>(
binder.op, resultType, operand);
return success();
});
patterns.onOp("LSTM", 1, onnx_c::OnnxLstmExpander);
patterns.onOp(
"LogSoftmax", 13,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Value input;
Torch::ValueTensorType resultType;
if (binder.tensorOperand(input) || binder.tensorResultType(resultType))
return failure();
int64_t axis;
if (binder.s64IntegerAttr(axis, "axis", -1))
return rewriter.notifyMatchFailure(binder.op, "axis bind failure");
Value axisConst = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(axis));
Value none = rewriter.create<Torch::ConstantNoneOp>(binder.getLoc());
rewriter.replaceOpWithNewOp<Torch::AtenLogSoftmaxIntOp>(
binder.op, resultType, input, axisConst, none);
return success();
});
patterns.onOp(
"LogSoftmax", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Value input;
Torch::ValueTensorType resultType;
if (binder.tensorOperand(input) || binder.tensorResultType(resultType))
return failure();
int64_t axis;
if (binder.s64IntegerAttr(axis, "axis", 1))
return rewriter.notifyMatchFailure(binder.op, "axis bind failure");
std::optional<unsigned> maybeRank = Torch::getTensorRank(input);
if (!maybeRank)
return rewriter.notifyMatchFailure(binder.op,
"Unsupported: unranked tensor");
int64_t rank = *maybeRank;
// if negative axis is provided, then flip it to a positive axis
if (axis < 0) {
axis = rank + axis;
}
// need input type and sizes to flatten/unflatten later.
auto inputTy = cast<Torch::ValueTensorType>(input.getType());
if (!inputTy || !inputTy.hasSizes())
return rewriter.notifyMatchFailure(
binder.op, "failed to get input type or sizes");
Value axisConst = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(axis));
Value none = rewriter.create<Torch::ConstantNoneOp>(binder.getLoc());
Value cstEnd = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(rank - 1));
// The old version of LogSoftmax flattens post-axis dims, performs
// LogSoftmax on the flattened dim, then unflattens back to the original
// shape.
// this section gets some size information necessary for
// flattening/unflattening
if (!inputTy || !inputTy.hasSizes())
return failure();
llvm::ArrayRef<int64_t> allDims(inputTy.getSizes());
llvm::ArrayRef<int64_t> rightDims(allDims.begin() + axis,
allDims.end());
llvm::SmallVector<int64_t> leftDims(allDims.begin(),
allDims.begin() + axis);
int64_t prodRightSizes = 1;
llvm::SmallVector<Value> rightDimConsts;
for (int64_t n : rightDims) {
rightDimConsts.push_back(rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(n)));
if (n == Torch::kUnknownSize) {
prodRightSizes = -1;
break;
}
prodRightSizes *= n;
}
leftDims.push_back(prodRightSizes);
// the following list will be used to unflatten the right side
Value rightDimsPrimList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
rewriter.getType<Torch::ListType>(
rewriter.getType<Torch::IntType>()),
rightDimConsts);
auto flatRightTy = rewriter.getType<Torch::ValueTensorType>(
leftDims, inputTy.getOptionalDtype());
// flatten input
Value inputFlatRight = rewriter.create<Torch::AtenFlattenUsingIntsOp>(
binder.getLoc(), flatRightTy, input, axisConst, cstEnd);
// compute lsm over flattened index
Value outputFlatRight = rewriter.create<Torch::AtenLogSoftmaxIntOp>(
binder.getLoc(), flatRightTy, inputFlatRight, axisConst, none);
// unflatten
rewriter.replaceOpWithNewOp<Torch::AtenUnflattenIntOp>(
binder.op, resultType, outputFlatRight, axisConst,
rightDimsPrimList);
return success();
});
patterns.onOp("MatMul", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType))
return failure();
rewriter.replaceOpWithNewOp<Torch::AtenMatmulOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp(
"MatMulInteger", 10,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs, lhsZp, rhsZp;
if (binder.tensorOperandAtIndex(lhs, 0) ||
binder.tensorOperandAtIndex(rhs, 1) ||
binder.tensorResultType(resultType))
return failure();
auto lhsTy = dyn_cast<Torch::ValueTensorType>(lhs.getType());
auto rhsTy = dyn_cast<Torch::ValueTensorType>(rhs.getType());
if (binder.tensorOperandAtIndex(lhsZp, 2)) {
lhsZp = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), 0));
}
if (binder.tensorOperandAtIndex(rhsZp, 3)) {
rhsZp = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), 0));
}
if (auto zpTy = dyn_cast<Torch::ValueTensorType>(lhsZp.getType())) {
for (auto dim : zpTy.getSizes())
if (dim != 1)
return failure();
lhsZp = rewriter.create<Torch::AtenItemOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(), lhsZp);
}
if (auto zpTy = dyn_cast<Torch::ValueTensorType>(rhsZp.getType())) {
for (auto dim : zpTy.getSizes())
if (dim != 1)
return failure();
rhsZp = rewriter.create<Torch::AtenItemOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(), rhsZp);
}
Value scale = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(1.0));
auto q = [&](Type qty) -> Type {
if (qty.isSignedInteger(8))
return rewriter.getType<Torch::QInt8Type>();
if (qty.isUnsignedInteger(8))
return rewriter.getType<Torch::QUInt8Type>();
if (qty.isSignedInteger(32))
return rewriter.getType<Torch::QInt32Type>();
return {};
};
Type lhsQTy = rewriter.getType<Torch::ValueTensorType>(
lhsTy.getOptionalSizes(), q(lhsTy.getDtype()));
Type rhsQTy = rewriter.getType<Torch::ValueTensorType>(
rhsTy.getOptionalSizes(), q(rhsTy.getDtype()));
lhs = rewriter.create<Torch::Aten_MakePerTensorQuantizedTensorOp>(
binder.getLoc(), lhsQTy, lhs, scale, lhsZp);
rhs = rewriter.create<Torch::Aten_MakePerTensorQuantizedTensorOp>(
binder.getLoc(), rhsQTy, rhs, scale, rhsZp);
rewriter.replaceOpWithNewOp<Torch::AtenMatmulOp>(binder.op, resultType,
lhs, rhs);
return success();
});
patterns.onOp("Mul", 7,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenMulTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp("NonZero", 13,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenNonzeroOp>(
binder.op, resultType, operand);
return success();
});
patterns.onOp(
"MaxPool", 12, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
std::string autoPad;
if (binder.customOpNameStringAttr(autoPad, "auto_pad", "NOTSET"))
return rewriter.notifyMatchFailure(binder.op,
"auto_pad bind failure");
if (autoPad != "NOTSET")
return rewriter.notifyMatchFailure(
binder.op, "unsupported conversion: auto_pad != NOTSET");
Torch::ValueTensorType resultTypeOut;
Value operand;
int64_t ceilMode, storageOrder;
// TODO: Add support for indices output and storage_order
if (binder.tensorOperand(operand) ||
binder.s64IntegerAttr(ceilMode, "ceil_mode", 0) ||
binder.s64IntegerAttr(storageOrder, "storage_order", 0) ||
binder.tensorResultTypeAtIndex(resultTypeOut, 0))
return rewriter.notifyMatchFailure(
binder.op,
"operand/ceil_mode/storage_order/resultType bind failure");
if (storageOrder != 0)
return rewriter.notifyMatchFailure(
binder.op, "storage_order setting is not supported.");
// Determine the rank of input tensor.
std::optional<unsigned> maybeRank = Torch::getTensorRank(operand);
if (!maybeRank)
return rewriter.notifyMatchFailure(binder.op,
"Unimplemented: unranked tensor");
int64_t rank = *maybeRank;
int64_t spatial = rank - 2;
SmallVector<int64_t> kernel, padding, strides, dilations;
if (binder.s64IntegerArrayAttr(kernel, "kernel_shape", {}))
return rewriter.notifyMatchFailure(binder.op,
"kernel_shape bind failure");
if (kernel.size() != static_cast<size_t>(spatial))
return rewriter.notifyMatchFailure(
binder.op, "kernel list size does not match the number of axes");
if (binder.s64IntegerArrayAttr(padding, "pads", {}))
return rewriter.notifyMatchFailure(binder.op, "pads bind failure");
if (!padding.empty() &&
padding.size() != static_cast<size_t>(2 * spatial))
return rewriter.notifyMatchFailure(
binder.op, "padding list must contain (begin,end) pair for each "
"spatial axis");
if (binder.s64IntegerArrayAttr(strides, "strides", {}))
return rewriter.notifyMatchFailure(binder.op, "strides bind failure");
if (!strides.empty() && strides.size() != static_cast<size_t>(spatial))
return rewriter.notifyMatchFailure(
binder.op, "strides list size does not match the number of axes");
if (binder.s64IntegerArrayAttr(dilations, "dilations", {}))
return rewriter.notifyMatchFailure(binder.op,
"dilations bind failure");
if (padding.empty())
padding.resize(spatial, 0);
if (strides.empty())
strides.resize(spatial, 1);
if (dilations.empty())
dilations.resize(spatial, 1);
// If the padding is symmetric we can push the padding operation to the
// torch operator.
if (padding.size() == static_cast<size_t>(2 * spatial)) {
bool equal = true;
for (int i = 0; i < spatial; ++i) {
equal = equal && (padding[i] == padding[i + spatial]);
}
if (equal)
padding.resize(spatial);
}
// Torch pool operators require equal padding on each size of each
// dimension so we materialize the padding behavior explicitly and set
// the padding to 0.
if (padding.size() == static_cast<size_t>(2 * spatial)) {
auto operandTy = cast<Torch::ValueTensorType>(operand.getType());
llvm::SmallVector<int64_t> shuffledPadding(spatial * 2);
llvm::SmallVector<int64_t> paddedShape(operandTy.getSizes());
shuffledPadding.resize(2 * rank);
for (int i = 0; i < spatial; ++i) {
paddedShape[i + 2] += padding[i] + padding[i + spatial];
shuffledPadding[2 * i] = padding[i];
shuffledPadding[2 * i + 1] = padding[i + spatial];
}
Value shuffledPaddingList =
createConstantIntList(binder, rewriter, padding);
Value zero;
if (isa<FloatType>(resultTypeOut.getDtype())) {
zero = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(
std::numeric_limits<double>::lowest()));
} else if (isa<IntegerType>(resultTypeOut.getDtype())) {
zero = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(
std::numeric_limits<int64_t>::lowest()));
}
auto paddedInputTy = rewriter.getType<Torch::ValueTensorType>(
paddedShape, operandTy.getDtype());
operand = rewriter.create<Torch::AtenConstantPadNdOp>(
binder.getLoc(), paddedInputTy, operand, shuffledPaddingList,
zero);
padding.clear();
padding.resize(spatial, 0);
}
Value kernelSizeList = createConstantIntList(binder, rewriter, kernel);
Value paddingList = createConstantIntList(binder, rewriter, padding);
Value stridesList = createConstantIntList(binder, rewriter, strides);
Value dilationsList =
createConstantIntList(binder, rewriter, dilations);
Value cstCeilMode =
rewriter.create<Torch::ConstantBoolOp>(binder.getLoc(), ceilMode);
if (rank == 3)
return rewriter.notifyMatchFailure(binder.op,
"Unimplemented: AtenMaxPool1dOp");
if (binder.op->getNumResults() == 2) {
Torch::ValueTensorType resultTypeIndices;
if (binder.tensorResultTypeAtIndex(resultTypeIndices, 1))
return failure();
if (rank == 4) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool2dWithIndicesOp>(
binder.op, resultTypeOut, resultTypeIndices, operand,
kernelSizeList, stridesList, paddingList, dilationsList,
cstCeilMode);
return success();
}
if (rank == 5) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool3dWithIndicesOp>(
binder.op, resultTypeOut, resultTypeIndices, operand,
kernelSizeList, stridesList, paddingList, dilationsList,
cstCeilMode);
return success();
}
} else {
if (rank == 4) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool2dOp>(
binder.op, resultTypeOut, operand, kernelSizeList, stridesList,
paddingList, dilationsList, cstCeilMode);
return success();
}
if (rank == 5) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool3dOp>(
binder.op, resultTypeOut, operand, kernelSizeList, stridesList,
paddingList, dilationsList, cstCeilMode);
return success();
}
}
return rewriter.notifyMatchFailure(binder.op, "No rank is matched.");
});
patterns.onOp("Greater", 16,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
std::string direction;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType))
return failure();
rewriter.replaceOpWithNewOp<Torch::AtenGtTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp("GreaterOrEqual", 16,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
std::string direction;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType))
return failure();
rewriter.replaceOpWithNewOp<Torch::AtenGeTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp(
"InstanceNormalization", 6,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
llvm::SmallVector<Value> operands;
float eps;
if (binder.tensorOperands(operands, 3) ||
binder.tensorResultType(resultType) || operands.size() != 3 ||
binder.f32FloatAttr(eps, "epsilon", 1e-05f)) {
return failure();
}
Value none = rewriter.create<Torch::ConstantNoneOp>(binder.getLoc());
Value boolTrue =
rewriter.create<Torch::ConstantBoolOp>(binder.getLoc(), true);
Value boolFalse =
rewriter.create<Torch::ConstantBoolOp>(binder.getLoc(), false);
auto epsValue = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getF64FloatAttr(eps));
auto momentum = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getF64FloatAttr(0.0f));
rewriter.replaceOpWithNewOp<Torch::AtenInstanceNormOp>(
binder.op, resultType, /* input */ operands[0],
/* weight */ operands[1],
/* bias */ operands[2], /* running mean */ none,
/* running var */ none,
/* use input stats */ boolTrue, momentum, epsValue,
/* cudnn enabled */ boolFalse);
return success();
});
patterns.onOp(
"Max", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
llvm::SmallVector<Value> operands;
if (binder.tensorOperandsList(operands) ||
binder.tensorResultType(resultType) || operands.size() == 0) {
return failure();
}
Value result = operands[0];
for (uint64_t i = 1; i < operands.size(); i++) {
result = rewriter.create<Torch::AtenMaximumOp>(
binder.getLoc(), resultType, result, operands[i]);
}
rewriter.replaceOp(binder.op, result);
return success();
});
patterns.onOp(
"Min", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
llvm::SmallVector<Value> operands;
if (binder.tensorOperandsList(operands) ||
binder.tensorResultType(resultType) || operands.size() == 0) {
return failure();
}
Value result = operands[0];
for (uint64_t i = 1; i < operands.size(); i++) {
result = rewriter.create<Torch::AtenMinimumOp>(
binder.getLoc(), resultType, result, operands[i]);
}
rewriter.replaceOp(binder.op, result);
return success();
});
patterns.onOp("Neg", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenNegOp>(
binder.op, resultType, operand);
return success();
});
patterns.onOp(
"Not", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType)) {
return failure();
}
auto loc = binder.getLoc();
auto operandTy = cast<Torch::ValueTensorType>(operand.getType());
auto eTy = operandTy.getDtype();
if (!eTy.isInteger(1)) {
auto i1ty = rewriter.getI1Type();
auto ty = rewriter.getType<Torch::ValueTensorType>(
operandTy.getSizes(), i1ty);
auto torchqTy = Torch::getScalarTypeForType(i1ty);
Value tyConst = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64),
static_cast<int64_t>(torchqTy)));
Value none = rewriter.create<Torch::ConstantNoneOp>(loc);
Value cstFalse = rewriter.create<Torch::ConstantBoolOp>(loc, false);
operand = rewriter.create<Torch::AtenToDtypeOp>(
loc, ty, operand, tyConst,
/*non_blocking=*/cstFalse, /*copy=*/cstFalse,
/*memory_format=*/none);
}
rewriter.replaceOpWithNewOp<Torch::AtenBitwiseNotOp>(
binder.op, resultType, operand);
return success();
});
patterns.onOp("Or", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenBitwiseOrTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp(
"GatherND", 13, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value data, indices;
int64_t batchDimCount;
if (binder.tensorOperandAtIndex(data, 0) ||
binder.tensorOperandAtIndex(indices, 1) ||
binder.tensorResultType(resultType) ||
binder.s64IntegerAttr(batchDimCount, "batch_dims", 0))
return failure();
Location loc = binder.getLoc();
auto dataTy = cast<Torch::ValueTensorType>(data.getType());
auto indicesTy = cast<Torch::ValueTensorType>(indices.getType());
if (!dataTy || !dataTy.hasSizes())
return failure();
if (!indicesTy || !indicesTy.hasSizes())
return failure();
// step 1. Get shapes and ranks of data and indices. The last dimension
// of indices is expected to be static.
ArrayRef<int64_t> dataShape = dataTy.getSizes();
int64_t dataRank = dataShape.size();
ArrayRef<int64_t> indicesShape = indicesTy.getSizes();
int64_t indicesRank = indicesShape.size();
int64_t indicesLastDim = indicesShape.back();
// Given data tensor of rank r >= 1, indices tensor of rank q >= 1, and
// batch_dims integer b, onnx.gather_nd gathers slices of data into an
// output tensor of rank q + r - indices_shape[-1] - 1 - b.
// indices_shape[-1] must be static to have deterministic output rank.
if (dataRank < 1 || indicesRank < 1)
return rewriter.notifyMatchFailure(
binder.op, "expected data and indices rank to be >= 1");
if (batchDimCount >= std::min(dataRank, indicesRank))
return rewriter.notifyMatchFailure(
binder.op, "batch_dims should be strictly less than "
"min(rank(data), rank(indices))");
if (indicesLastDim == Torch::kUnknownSize)
return rewriter.notifyMatchFailure(
binder.op, "expected last dimension of indices to be static");
// step 2. Get dimension list of data.
SmallVector<int64_t> batchShape;
SmallVector<Value> batchDims;
SmallVector<Value> dataDims;
for (int64_t i = 0; i < dataRank; ++i) {
Value k = rewriter.create<Torch::ConstantIntOp>(binder.getLoc(), i);
Value dataDim = rewriter.create<Torch::AtenSizeIntOp>(loc, data, k);
dataDims.push_back(dataDim);
if (i < batchDimCount) {
batchShape.push_back(dataShape[i]);
batchDims.push_back(dataDim);
}
}
// step 3. Get dimension list of indices.
Value constZero = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(0));
Value constOne = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(1));
SmallVector<Value> indicesDimsMinusOne;
SmallVector<Value> unflattenIndicesDims;
Value indicesFlattenDim = constOne;
for (int64_t i = 0; i < indicesRank - 1; ++i) {
Value k = rewriter.create<Torch::ConstantIntOp>(binder.getLoc(), i);
Value indicesDim =
rewriter.create<Torch::AtenSizeIntOp>(loc, indices, k);
indicesDimsMinusOne.push_back(indicesDim);
if (i >= batchDimCount) {
unflattenIndicesDims.push_back(indicesDim);
indicesFlattenDim = rewriter.create<Torch::AtenMulIntOp>(
loc, indicesFlattenDim, indicesDim);
}
}
ArrayRef<int64_t> indicesShapeMinusOne = indicesShape.drop_back();
// Algorithm: We can not directly perform torch.gather as it requires
// the ranks of data(`r`) and indices(`q`) to be same. So we will
// perform collapse and reshape operations to match the ranks of data
// and indices(making sure the semantics of the onnx.gather_nd are
// preserved), perform torch.gather operation, later unflatten the
// gather result to match onnx.gather_nd output. For example, assuming
// indices is of shape (4, 5, 3, 2), data is (4, 10, 11, 7, 4) and
// batch_dims(`b`)=1. Firstly, modify indices to 1-D indexing as the
// torch.gather op supports only single dimensional indexing. (this
// algorithm would have been simpler if we can get a torch op that
// supports indexing at multiple dimensions simultaneously). 1-D indexed
// indices will be of shape (4, 5, 3, 1), now materialize it to
// `r-b-indices_shape[-1]` dimension of data i.e. reshaping it to the
// shape (4, 5, 3, 1, 1). Next step is to flatten+expand the indices and
// flatten the data to (4, 15, 7, 4) and (4, 110, 7, 4) shapes
// respectively and then perform the torch.gather operation. Post the
// gather operation, unflatten the indices dimensions of result to (4,
// 5, 3, 7, 4) which is our required result.
// step 4. Convert indices_shape[-1] dimensional indexing to 1D
// indexing.
Value sliceDim = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(indicesRank - 1));
SmallVector<int64_t> indicesSliceShape(indicesShapeMinusOne);
indicesSliceShape.push_back(1);
auto indicesSliceTy = rewriter.getType<Torch::ValueTensorType>(
indicesSliceShape, indicesTy.getOptionalDtype());
Value start = constZero;
Value updatedIndices;
for (int64_t i = 0; i < indicesLastDim; ++i) {
Value end = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(i + 1));
Value indicesSlice = rewriter.create<Torch::AtenSliceTensorOp>(
loc, indicesSliceTy, indices, sliceDim, start, end,
/*step=*/constOne);
start = end;
// Apply bounds checking on the indices slice.
auto boolTy = rewriter.getType<Torch::ValueTensorType>(
indicesSliceShape, rewriter.getI1Type());
Value lt = rewriter.create<Torch::AtenLtScalarOp>(
loc, boolTy, indicesSlice, constZero);
Value add = rewriter.create<Torch::AtenAddScalarOp>(
loc, indicesSliceTy, indicesSlice, dataDims[batchDimCount + i],
/*alpha=*/constOne);
indicesSlice = rewriter.create<Torch::AtenWhereSelfOp>(
loc, indicesSliceTy, lt, add, indicesSlice);
if (i == 0) {
updatedIndices = indicesSlice;
continue;
}
updatedIndices = rewriter.create<Torch::AtenAddTensorOp>(
loc, indicesSliceTy, indicesSlice, updatedIndices,
dataDims[batchDimCount + i]);
}
// step 5. Compute all the required result types here.
SmallVector<int64_t> reshapeIndicesShape(indicesShapeMinusOne);
SmallVector<Value> reshapeIndicesDims(indicesDimsMinusOne);
// Determine the collapsed dim size of indices(index_shape[-1] is not
// part of collapsing as we already removed it by 1-D indexing).
SmallVector<int64_t> flattenIndicesShape(batchShape);
auto indicesCt = 1;
for (int64_t i = batchDimCount; i < indicesRank - 1; ++i) {
if (indicesShape[i] == Torch::kUnknownSize) {
indicesCt = Torch::kUnknownSize;
break;
}
indicesCt *= indicesShape[i];
}
flattenIndicesShape.push_back(indicesCt);
// Determine the collapsed dim size of data.
SmallVector<int64_t> flattenDataShape(batchShape);
auto dataCt = 1;
for (int64_t i = 0; i < indicesLastDim; ++i) {
int64_t sz = dataShape[i + batchDimCount];
if (sz == Torch::kUnknownSize) {
dataCt = Torch::kUnknownSize;
break;
}
dataCt *= sz;
}
flattenDataShape.push_back(dataCt);
// Compute the shape of expand op.
SmallVector<Value> expandIndicesDims(batchDims);
expandIndicesDims.push_back(indicesFlattenDim);
SmallVector<int64_t> expandIndicesShape(batchShape);
expandIndicesShape.push_back(indicesCt);
// Append `r-b-indices_shape[-1]` unit or data dims appropriately to all
// result types.
for (int64_t i = batchDimCount + indicesLastDim; i < dataRank; ++i) {
reshapeIndicesShape.push_back(1);
flattenIndicesShape.push_back(1);
flattenDataShape.push_back(dataShape[i]);
expandIndicesShape.push_back(dataShape[i]);
reshapeIndicesDims.push_back(constOne);
expandIndicesDims.push_back(dataDims[i]);
}
// step 6. Reshape 1-D indexed indices to match the rank of flattened
// data by inserting unit dimensions.
auto intListTy = rewriter.getType<Torch::ListType>(
rewriter.getType<Torch::IntType>());
Value reshapeIndicesSizeList =
rewriter.create<Torch::PrimListConstructOp>(loc, intListTy,
reshapeIndicesDims);
auto reshapeIndicesTy = rewriter.getType<Torch::ValueTensorType>(
reshapeIndicesShape, indicesTy.getOptionalDtype());
Value reshapedIndices = rewriter.create<Torch::AtenViewOp>(
loc, reshapeIndicesTy, updatedIndices, reshapeIndicesSizeList);
// step 7. Flatten `q-b-1` dimensions of the indices.
auto flattenIndicesTy = rewriter.getType<Torch::ValueTensorType>(
flattenIndicesShape, indicesTy.getOptionalDtype());
Value batchDimCountVal = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(batchDimCount));
Value flattenedIndices = reshapedIndices;
if (indicesRank == 1) {
flattenedIndices = rewriter.create<Torch::AtenUnsqueezeOp>(
loc, flattenIndicesTy, reshapedIndices, constZero);
} else if (indicesRank > 1) {
Value endDim = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(indicesRank - 2));
flattenedIndices = rewriter.create<Torch::AtenFlattenUsingIntsOp>(
loc, flattenIndicesTy, reshapedIndices, batchDimCountVal, endDim);
}
// step 8. Expand `r-b-indices_shape[-1]` dims of flattened indices.
auto expandIndicesTy = rewriter.getType<Torch::ValueTensorType>(
expandIndicesShape, indicesTy.getOptionalDtype());
Value expandIndicesSizeList =
rewriter.create<Torch::PrimListConstructOp>(loc, intListTy,
expandIndicesDims);
Value constFalse = rewriter.create<Torch::ConstantBoolOp>(
loc, rewriter.getType<Torch::BoolType>(),
rewriter.getBoolAttr(false));
Value expandedIndices = rewriter.create<Torch::AtenExpandOp>(
loc, expandIndicesTy, flattenedIndices, expandIndicesSizeList,
/*implicit=*/constFalse);
// step 9. Flatten indices_shape[-1] dimensions of data.
auto flattenDataTy = rewriter.getType<Torch::ValueTensorType>(
flattenDataShape, dataTy.getOptionalDtype());
Value endDim = rewriter.create<Torch::ConstantIntOp>(
loc,
rewriter.getI64IntegerAttr(batchDimCount + indicesLastDim - 1));
Value flattenedData = rewriter.create<Torch::AtenFlattenUsingIntsOp>(
loc, flattenDataTy, data, batchDimCountVal, endDim);
// step 10. Now we have flattenedData and expandedIndices of same rank
// to perform gather operation.
auto gatherTy = rewriter.getType<Torch::ValueTensorType>(
expandIndicesShape, dataTy.getOptionalDtype());
Value gather = rewriter.create<Torch::AtenGatherOp>(
loc, gatherTy, flattenedData, batchDimCountVal, expandedIndices,
/*sparseGrad=*/constFalse);
// step 11. Unflatten the collapsed indices dims of gather result.
if (indicesRank == 1) {
rewriter.replaceOpWithNewOp<Torch::AtenSqueezeDimOp>(
binder.op, resultType, gather, /*dim=*/constZero);
return success();
}
Value unflattenSizeList = rewriter.create<Torch::PrimListConstructOp>(
loc, intListTy, unflattenIndicesDims);
rewriter.replaceOpWithNewOp<Torch::AtenUnflattenIntOp>(
binder.op, resultType, gather, batchDimCountVal, unflattenSizeList);
return success();
});
patterns.onOp(
"Gather", 13, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value data, indices;
int64_t axis;
if (binder.tensorOperandAtIndex(data, 0) ||
binder.tensorOperandAtIndex(indices, 1) ||
binder.tensorResultType(resultType) ||
binder.s64IntegerAttr(axis, "axis", 0))
return failure();
Location loc = binder.getLoc();
auto ctx = binder.op->getContext();
auto indicesTy = cast<Torch::ValueTensorType>(indices.getType());
auto dataTy = cast<Torch::ValueTensorType>(data.getType());
if (!dataTy || !dataTy.hasSizes() || !indicesTy.hasSizes())
return failure();
int64_t dataRank = dataTy.getSizes().size();
int64_t indicesRank = indicesTy.getSizes().size();
axis = axis < 0 ? axis + dataRank : axis;
Value index = rewriter.create<Torch::ConstantIntOp>(
loc, Torch::IntType::get(ctx), rewriter.getI64IntegerAttr(axis));
// Apply bounds checking on the input:
auto intTy = rewriter.getType<Torch::IntType>();
auto boolTy = rewriter.getType<Torch::ValueTensorType>(
indicesTy.getSizes(), rewriter.getI1Type());
Value zero = rewriter.create<Torch::ConstantIntOp>(
loc, intTy, rewriter.getI64IntegerAttr(0));
Value one = rewriter.create<Torch::ConstantIntOp>(
loc, intTy, rewriter.getI64IntegerAttr(1));
Value lt =
rewriter.create<Torch::AtenLtScalarOp>(loc, boolTy, indices, zero);
Value dim =
rewriter.create<Torch::AtenSizeIntOp>(loc, intTy, data, index);
Value add = rewriter.create<Torch::AtenAddScalarOp>(loc, indicesTy,
indices, dim, one);
indices = rewriter.create<Torch::AtenWhereSelfOp>(loc, indicesTy, lt,
add, indices);
auto intListTy = rewriter.getType<Torch::ListType>(
rewriter.getType<Torch::IntType>());
llvm::SmallVector<Value> indicesDims;
for (int i = 0, s = indicesTy.getSizes().size(); i < s; ++i) {
Value k = rewriter.create<Torch::ConstantIntOp>(binder.getLoc(), i);
indicesDims.push_back(rewriter.create<Torch::AtenSizeIntOp>(
binder.getLoc(), indices, k));
}
Value indicesSizeList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(), intListTy, indicesDims);
// Determine the collapsed dim size:
auto indicesCt = 1;
for (auto sz : indicesTy.getSizes()) {
if (sz == Torch::kUnknownSize) {
indicesCt = Torch::kUnknownSize;
break;
}
indicesCt *= sz;
}
auto flattenTy = rewriter.getType<Torch::ValueTensorType>(
SmallVector<int64_t>{indicesCt}, indicesTy.getOptionalDtype());
if (indicesRank == 0) {
indices = rewriter.create<Torch::AtenUnsqueezeOp>(
binder.getLoc(), flattenTy, indices, zero);
} else if (indicesRank > 1) {
Value rank = rewriter.create<Torch::AtenDimOp>(loc, intTy, indices);
Value end = rewriter.create<Torch::AtenSubIntOp>(loc, rank, one);
indices = rewriter.create<Torch::AtenFlattenUsingIntsOp>(
loc, flattenTy, indices, zero, end);
}
llvm::SmallVector<int64_t> gatherShape(dataTy.getSizes());
gatherShape[axis] = indicesCt;
auto gatherTy = rewriter.getType<Torch::ValueTensorType>(
gatherShape, dataTy.getOptionalDtype());
Value gather = rewriter.create<Torch::AtenIndexSelectOp>(
loc, gatherTy, data, index, indices);
if (indicesRank == 1) {
rewriter.replaceOp(binder.op, gather);
return success();
}
if (indicesRank > 1) {
gather = rewriter.replaceOpWithNewOp<Torch::AtenUnflattenIntOp>(
binder.op, resultType, gather, index, indicesSizeList);
return success();
}
rewriter.replaceOpWithNewOp<Torch::AtenSqueezeOp>(binder.op, resultType,
gather);
return success();
});
patterns.onOp(
"GatherElements", 13,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value data, indices;
int64_t axis;
if (binder.tensorOperandAtIndex(data, 0) ||
binder.tensorOperandAtIndex(indices, 1) ||
binder.tensorResultType(resultType) ||
binder.s64IntegerAttr(axis, "axis", 0))
return failure();
Value constAxis = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), axis));
Value sparseGrad = rewriter.create<Torch::ConstantBoolOp>(
binder.getLoc(), rewriter.getType<Torch::BoolType>(),
rewriter.getBoolAttr(false));
rewriter.replaceOpWithNewOp<Torch::AtenGatherOp>(
binder.op, resultType, data, constAxis, indices, sparseGrad);
return success();
});
patterns.onOp(
"Gemm", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value a, b, c;
float alpha, beta;
int64_t transA, transB;
if (binder.tensorOperandAtIndex(a, 0) ||
binder.tensorOperandAtIndex(b, 1) ||
binder.s64IntegerAttr(transA, "transA", 0) ||
binder.s64IntegerAttr(transB, "transB", 0) ||
binder.f32FloatAttr(alpha, "alpha", 1.0f) ||
binder.f32FloatAttr(beta, "beta", 1.0f) ||
binder.tensorResultType(resultType))
return failure();
Value zero = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), 0));
Value one = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), 1));
auto transpose = [&](Value m) -> Value {
auto tty = cast<Torch::ValueTensorType>(m.getType());
auto shape = tty.getOptionalSizes();
if (shape.has_value()) {
llvm::SmallVector<int64_t> newShape(shape.value());
std::reverse(newShape.begin(), newShape.end());
shape = std::move(newShape);
}
auto oty = Torch::ValueTensorType::get(tty.getContext(), shape,
tty.getOptionalDtype());
return rewriter.create<Torch::AtenTransposeIntOp>(binder.getLoc(),
oty, m, zero, one);
};
if (transA) {
a = transpose(a);
}
if (transB) {
b = transpose(b);
}
if (binder.getNumOperands() == 2) {
rewriter.replaceOpWithNewOp<Torch::AtenMmOp>(binder.op, resultType, a,
b);
return success();
}
if (binder.tensorOperandAtIndex(c, 2))
return rewriter.notifyMatchFailure(binder.op,
"Expected either 2 or 3 inputs");
Value mm =
rewriter.create<Torch::AtenMmOp>(binder.getLoc(), resultType, a, b);
if (alpha == 1.0 && beta == 1.0) {
rewriter.replaceOpWithNewOp<Torch::AtenAddTensorOp>(
binder.op, resultType, mm, c, one);
return success();
}
if (alpha != 1.0 && beta != 1.0) {
Value constAlpha = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(alpha));
mm = rewriter.create<Torch::AtenMulScalarOp>(
binder.getLoc(), resultType, mm, constAlpha);
alpha = 1.0;
}
if (alpha != 1.0) {
std::swap(alpha, beta);
std::swap(mm, c);
}
Value constBeta = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(beta));
rewriter.replaceOpWithNewOp<Torch::AtenAddTensorOp>(
binder.op, resultType, mm, c, constBeta);
return success();
});
patterns.onOp(
"GlobalAveragePool", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType))
return failure();
auto inputTensorType = cast<Torch::ValueTensorType>(operand.getType());
if (!inputTensorType || !inputTensorType.hasSizes()) {
return rewriter.notifyMatchFailure(
binder.op, "Expected input type having sizes");
}
ArrayRef<int64_t> inputShape = inputTensorType.getSizes();
unsigned inputRank = inputShape.size();
if (!resultType || !resultType.hasSizes()) {
return rewriter.notifyMatchFailure(
binder.op, "Expected result type having sizes");
}
ArrayRef<int64_t> resultShape = resultType.getSizes();
SmallVector<Value> cstKernel, cstPadding, cstStrides;
Value cstZero = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(0));
Value cstOne = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(1));
for (unsigned i = 2; i < inputRank; i++) {
if (inputShape[i] == Torch::kUnknownSize) {
Value dim = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(i));
Value inputDimSize = rewriter.create<Torch::AtenSizeIntOp>(
binder.getLoc(), operand, dim);
cstKernel.push_back(inputDimSize);
} else {
int64_t kernelSize = inputShape[i] - resultShape[i] + 1;
cstKernel.push_back(rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(kernelSize)));
}
cstPadding.push_back(cstZero);
cstStrides.push_back(cstOne);
}
Value kernelSizeList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstKernel);
Value paddingList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstPadding);
Value stridesList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstStrides);
Value cstFalse =
rewriter.create<Torch::ConstantBoolOp>(binder.getLoc(), false);
Value cstCeilMode = cstFalse;
Value cstCountIncludePad = cstFalse;
Value cstNone = rewriter.create<Torch::ConstantNoneOp>(binder.getLoc());
if (inputRank == 3) {
rewriter.replaceOpWithNewOp<Torch::AtenAvgPool1dOp>(
binder.op, resultType, operand, kernelSizeList, stridesList,
paddingList, cstCeilMode, cstCountIncludePad);
return success();
} else if (inputRank == 4) {
rewriter.replaceOpWithNewOp<Torch::AtenAvgPool2dOp>(
binder.op, resultType, operand, kernelSizeList, stridesList,
paddingList, cstCeilMode, cstCountIncludePad,
/*divisor_override=*/cstNone);
return success();
} else if (inputRank == 5) {
rewriter.replaceOpWithNewOp<Torch::AtenAvgPool3dOp>(
binder.op, resultType, operand, kernelSizeList, stridesList,
paddingList, cstCeilMode, cstCountIncludePad,
/*divisor_override=*/cstNone);
return success();
}
return failure();
});
patterns.onOp(
"GlobalMaxPool", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType))
return failure();
auto inputTensorType = cast<Torch::ValueTensorType>(operand.getType());
if (!inputTensorType || !inputTensorType.hasSizes()) {
return rewriter.notifyMatchFailure(
binder.op, "Expected input type having sizes");
}
ArrayRef<int64_t> inputShape = inputTensorType.getSizes();
unsigned inputRank = inputShape.size();
if (!resultType || !resultType.hasSizes()) {
return rewriter.notifyMatchFailure(
binder.op, "Expected result type having sizes");
}
SmallVector<Value> cstKernel, cstPadding, cstStrides, cstDilations;
Value cstZero = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(0));
Value cstOne = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(1));
for (unsigned i = 2; i < inputRank; i++) {
if (inputShape[i] == Torch::kUnknownSize) {
Value dim = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(i));
Value inputDimSize = rewriter.create<Torch::AtenSizeIntOp>(
binder.getLoc(), operand, dim);
cstKernel.push_back(inputDimSize);
} else {
cstKernel.push_back(rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(inputShape[i])));
}
cstPadding.push_back(cstZero);
cstDilations.push_back(cstOne);
cstStrides.push_back(cstOne);
}
Value kernelSizeList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstKernel);
Value paddingList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstPadding);
Value dilationsList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstDilations);
Value stridesList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
cstStrides);
Value cstCeilMode =
rewriter.create<Torch::ConstantBoolOp>(binder.getLoc(), false);
if (inputRank == 3) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool1dOp>(
binder.op, resultType, operand, kernelSizeList, stridesList,
paddingList, dilationsList, cstCeilMode);
return success();
} else if (inputRank == 4) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool2dOp>(
binder.op, resultType, operand, kernelSizeList, stridesList,
paddingList, dilationsList, cstCeilMode);
return success();
} else if (inputRank == 5) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxPool3dOp>(
binder.op, resultType, operand, kernelSizeList, stridesList,
paddingList, dilationsList, cstCeilMode);
return success();
}
return failure();
});
patterns.onOp(
"LayerNormalization", 17,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType yType, meanType, invStdDevType;
Value x, scale, b;
int64_t axis, stashType;
float epsilon;
if (binder.tensorOperandAtIndex(x, 0) ||
binder.tensorOperandAtIndex(scale, 1) ||
binder.tensorOperandAtIndex(b, 2) ||
binder.tensorResultTypeAtIndex(yType, 0) ||
binder.s64IntegerAttr(axis, "axis", -1) ||
binder.f32FloatAttr(epsilon, "epsilon", 0.00001f) ||
binder.s64IntegerAttr(stashType, "stash_type", 1))
return failure();
Value constEpsilon = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(epsilon));
unsigned rank = 1;
if (std::optional<unsigned> maybeRank = Torch::getTensorRank(x))
rank = *maybeRank;
SmallVector<Value> normalized;
axis = Torch::toPositiveDim(axis, rank);
auto xType = cast<Torch::ValueTensorType>(x.getType());
if (!xType.hasSizes()) {
return rewriter.notifyMatchFailure(
binder.op, "Expected input (X) to have sizes");
}
ArrayRef<int64_t> xShape = xType.getSizes();
for (int64_t n = axis; n < rank; n++) {
normalized.push_back(rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getI64IntegerAttr(xShape[n])));
}
Value normalized_shape = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
Torch::ListType::get(Torch::IntType::get(binder.op->getContext())),
normalized);
int64_t numResults = binder.op->getNumResults();
if (numResults == 1) {
SmallVector<int64_t> reducedShape(rank, 1);
for (int64_t i = 0; i < axis; i++)
reducedShape[i] = xShape[i];
auto reducedType = xType.getWithSizesAndDtype(
reducedShape, xType.getOptionalDtype());
Value y = rewriter
.create<Torch::AtenNativeLayerNormOp>(
binder.getLoc(), yType, /*meanType=*/reducedType,
/*invStdDevType=*/reducedType, x, normalized_shape,
scale, b, constEpsilon)
.getResult0();
rewriter.replaceOp(binder.op, y);
return success();
}
if (numResults == 3) {
if (binder.tensorResultTypeAtIndex(meanType, 1) ||
binder.tensorResultTypeAtIndex(invStdDevType, 2))
return failure();
rewriter.replaceOpWithNewOp<Torch::AtenNativeLayerNormOp>(
binder.op, yType, meanType, invStdDevType, x, normalized_shape,
scale, b, constEpsilon);
return success();
}
return rewriter.notifyMatchFailure(
binder.op, "Unimplemented: expected either 1 or 3 results");
});
patterns.onOp("LeakyRelu", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value operand;
float alpha;
if (binder.tensorOperand(operand) ||
binder.tensorResultType(resultType) ||
binder.f32FloatAttr(alpha, "alpha", 0.01f))
return failure();
Value constAlpha = rewriter.create<Torch::ConstantFloatOp>(
binder.getLoc(), rewriter.getType<Torch::FloatType>(),
rewriter.getF64FloatAttr(alpha));
rewriter.replaceOpWithNewOp<Torch::AtenLeakyReluOp>(
binder.op, resultType, operand, constAlpha);
return success();
});
patterns.onOp(
"Pad", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value data, pads, axes;
std::string mode;
// TODO: The `axes` parameter is not supported yet.
if (!binder.tensorOperandAtIndex(axes, 3)) {
return rewriter.notifyMatchFailure(
binder.op, "The axes parameter is not supported yet");
}
if (binder.tensorOperandAtIndex(data, 0) ||
binder.tensorOperandAtIndex(pads, 1) ||
binder.tensorResultType(resultType) ||
binder.customOpNameStringAttr(mode, "mode", "constant"))
return failure();
Location loc = binder.getLoc();
// Get pads shape and rank. The pads tensor is expected to be 1-D
// tensor.
auto padsTensorType = cast<Torch::ValueTensorType>(pads.getType());
if (!padsTensorType || !padsTensorType.hasSizes()) {
return rewriter.notifyMatchFailure(binder.op,
"Expect non empty pad tensor");
}
ArrayRef<int64_t> padsShape = padsTensorType.getSizes();
int64_t padsRank = padsShape.size();
if (padsRank != 1)
return rewriter.notifyMatchFailure(binder.op,
"expect 1-d pad tensor");
int64_t padsSize = padsShape[0];
if (padsSize == Torch::kUnknownSize) {
// As per onnx.Pad documentation, padSize = 2*num_data_axes
// (if axes param not passed). Need to be updated when adding
// support for `axes` param.
auto dataOpTy = cast<Torch::ValueTensorType>(data.getType());
TensorType dataTensor = dataOpTy.toBuiltinTensor();
if (!dataTensor || !dataTensor.hasRank())
return rewriter.notifyMatchFailure(
binder.op, "pad length unknown and data operand unranked");
int64_t dataRank = dataTensor.getRank();
padsSize = 2 * dataRank;
}
Value constantValue;
if (binder.getNumOperands() >= 3) {
if (!binder.tensorOperandAtIndex(constantValue, 2)) {
auto constTy =
dyn_cast<Torch::BaseTensorType>(constantValue.getType());
if (!constTy || !constTy.hasDtype())
return rewriter.notifyMatchFailure(
binder.op, "constant ty is unsupport type");
Type scalarTy = rewriter.getType<Torch::IntType>();
if (isa<FloatType>(constTy.getDtype()))
scalarTy = rewriter.getType<Torch::FloatType>();
constantValue = rewriter.create<Torch::AtenItemOp>(loc, scalarTy,
constantValue);
}
}
if (!constantValue) {
auto dataTensorType = cast<Torch::ValueTensorType>(data.getType());
if (isa<IntegerType>(dataTensorType.getDtype()))
constantValue = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(0));
if (isa<FloatType>(dataTensorType.getDtype()))
constantValue = rewriter.create<Torch::ConstantFloatOp>(
loc, rewriter.getF64FloatAttr(0.0f));
if (!constantValue)
return rewriter.notifyMatchFailure(
binder.op, "expected integer or float data tensor");
}
// Extract all the values of 1-D pad tensor and create a list of all
// these values as torch.pad op expects pad list.
Value constZero = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(0));
SmallVector<Value> padsTensorValue;
SmallVector<int64_t> emptyShape;
Type padsElemType =
Torch::ValueTensorType::get(padsTensorType.getContext(), emptyShape,
padsTensorType.getOptionalDtype());
for (uint32_t i = 0; i < padsSize; ++i) {
Value index = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(i));
auto select = rewriter.create<Torch::AtenSelectIntOp>(
loc, padsElemType, pads, constZero, index);
Value selectInt = rewriter.create<Torch::AtenItemOp>(
loc, rewriter.getType<Torch::IntType>(), select);
padsTensorValue.push_back(selectInt);
}
// The torch.pad op expects a different arrangement of padding pairs for
// each dimension as compared to the onnx.pad op. So, rearranging pad
// tensor to satisfy torch.pad op semantics.
SmallVector<Value> padsRearrange;
for (uint32_t i = 0; i < padsSize / 2; i++) {
padsRearrange.emplace_back(padsTensorValue[i]);
padsRearrange.emplace_back(padsTensorValue[(padsSize / 2) + i]);
}
Value padsSizeList =
rewriter
.create<Torch::PrimListConstructOp>(
loc,
Torch::ListType::get(rewriter.getType<Torch::IntType>()),
padsRearrange)
.getResult();
Value modeVal = rewriter.create<Torch::ConstantStrOp>(
loc, rewriter.getStringAttr(mode));
rewriter.replaceOpWithNewOp<Torch::AtenPadOp>(
binder.op, resultType, data, padsSizeList, modeVal, constantValue);
return success();
});
patterns.onOp("Pow", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value lhs, rhs;
if (binder.tensorOperands(lhs, rhs) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenPowTensorTensorOp>(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp(
"Identity", 14, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value tensor;
if (binder.tensorOperand(tensor) ||
binder.tensorResultType(resultType)) {
return failure();
}
Value noneVal = rewriter.create<Torch::ConstantNoneOp>(binder.getLoc());
rewriter.replaceOpWithNewOp<Torch::AtenCloneOp>(
binder.op, resultType, tensor, /*memory_format=*/noneVal);
return success();
});
patterns.onOp(
"Mean", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
if (binder.op->getNumOperands() == 1) {
Torch::ValueTensorType resultType;
Value x;
if (binder.tensorOperand(x) || binder.tensorResultType(resultType))
return failure();
rewriter.replaceOp(binder.op, x);
return success();
}
Torch::ValueTensorType resultType;
SmallVector<Value> valList;
int64_t numOperands = binder.op->getNumOperands();
Value numOperandsConstant = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), numOperands));
if (binder.tensorOperands(valList, numOperands) ||
binder.tensorResultType(resultType))
return failure();
Value constOne = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64), 1));
// Short circuit to binary add
Value curr = rewriter.create<Torch::AtenAddTensorOp>(
binder.getLoc(), resultType, valList[0], valList[1], constOne);
if (numOperands == 2) {
rewriter.replaceOpWithNewOp<Torch::AtenDivScalarOp>(
binder.op, resultType, curr, numOperandsConstant);
return success();
}
// When binder.op->getNumOperands() > 2
auto baseType = Torch::ValueTensorType::getWithLeastStaticInformation(
binder.op->getContext());
for (int i = 2; i < numOperands; i++) {
if (i == numOperands - 1) {
curr = rewriter.create<Torch::AtenAddTensorOp>(
binder.getLoc(), resultType, curr, valList[i], constOne);
} else {
curr = rewriter.create<Torch::AtenAddTensorOp>(
binder.getLoc(), baseType, curr, valList[i], constOne);
}
}
rewriter.replaceOpWithNewOp<Torch::AtenDivScalarOp>(
binder.op, resultType, curr, numOperandsConstant);
return success();
});
patterns.onOp(
"IsInf", 10, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value tensor;
int64_t neg;
int64_t pos;
if (binder.tensorOperand(tensor) ||
binder.s64IntegerAttr(neg, "detect_negative", 1) ||
binder.s64IntegerAttr(pos, "detect_positive", 1) ||
binder.tensorResultType(resultType)) {
return failure();
}
if (neg == 0) {
// replace all negative infs with 0
tensor = rewriter.create<Torch::AtenReluOp>(
binder.getLoc(),
dyn_cast<Torch::ValueTensorType>(tensor.getType()), tensor);
}
if (pos == 0) {
// first use neg op to flip positive inf to negative inf. Then relu to
// replace all positive infs with 0.
Value flip = rewriter.create<Torch::AtenNegOp>(
binder.getLoc(),
dyn_cast<Torch::ValueTensorType>(tensor.getType()), tensor);
tensor = rewriter.create<Torch::AtenReluOp>(
binder.getLoc(), dyn_cast<Torch::ValueTensorType>(flip.getType()),
flip);
}
rewriter.replaceOpWithNewOp<Torch::AtenIsinfOp>(binder.op, resultType,
tensor);
return success();
});
patterns.onOp("IsNaN", 9,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value tensor;
if (binder.tensorOperand(tensor) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenIsnanOp>(
binder.op, resultType, tensor);
return success();
});
patterns.onOp("PRelu", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value tensor;
Value slope;
if (binder.tensorOperands(tensor, slope) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenPreluOp>(
binder.op, resultType, tensor, slope);
return success();
});
patterns.onOp("Mod", 13,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value self, other;
int64_t fmod;
if (binder.tensorOperands(self, other) ||
binder.tensorResultType(resultType) ||
binder.s64IntegerAttr(fmod, "fmod", 0)) {
return failure();
}
if (fmod) {
rewriter.replaceOpWithNewOp<Torch::AtenFmodTensorOp>(
binder.op, resultType, self, other);
return success();
}
rewriter.replaceOpWithNewOp<Torch::AtenRemainderTensorOp>(
binder.op, resultType, self, other);
return success();
});
patterns.onOp("Mish", 18,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value input;
if (binder.tensorOperand(input) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenMishOp>(
binder.op, resultType, input);
return success();
});
patterns.onOp(
"OneHot", 1, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
llvm::SmallVector<Value> inputs;
Torch::ValueTensorType resultType;
if (binder.tensorOperandsList(inputs) ||
binder.tensorResultType(resultType))
return failure();
if (inputs.size() != 3)
return rewriter.notifyMatchFailure(binder.op, "expected 3 operands");
int64_t axis;
if (binder.s64IntegerAttr(axis, "axis", -1))
return rewriter.notifyMatchFailure(binder.op,
"`axis` attr not found");
auto loc = binder.getLoc();
Value indices = inputs[0];
Value depth = inputs[1];
Value values = inputs[2];
auto indicesTy = cast<Torch::ValueTensorType>(indices.getType());
auto valuesTy = cast<Torch::ValueTensorType>(values.getType());
auto depthTy = cast<Torch::ValueTensorType>(depth.getType());
axis = axis < 0 ? axis + indicesTy.getSizes().size() + 1 : axis;
bool depthIsInt = isa<IntegerType>(depthTy.getDtype());
Type intTy = rewriter.getType<Torch::IntType>();
Type floatTy = rewriter.getType<Torch::FloatType>();
Type depthETy = depthIsInt ? intTy : floatTy;
depth = rewriter.create<Torch::AtenItemOp>(loc, depthETy, depth);
if (!depthIsInt)
depth = rewriter.create<Torch::AtenIntScalarOp>(
loc, rewriter.getType<Torch::IntType>(), depth);
Type boolTy = rewriter.getType<Torch::ValueTensorType>(
indicesTy.getSizes(), rewriter.getI1Type());
Value zero = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(0));
Value one = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(1));
Value lt =
rewriter.create<Torch::AtenLtScalarOp>(loc, boolTy, indices, zero);
Value add = rewriter.create<Torch::AtenAddScalarOp>(
loc, indicesTy, indices, depth, one);
indices = rewriter.create<Torch::AtenWhereSelfOp>(loc, indicesTy, lt,
add, indices);
auto selectTy = rewriter.getType<Torch::ValueTensorType>(
llvm::SmallVector<int64_t>{1}, valuesTy.getDtype());
bool valuesAreInt = isa<IntegerType>(valuesTy.getDtype());
Type valuesETy = valuesAreInt ? intTy : floatTy;
Value off = rewriter.create<Torch::AtenSelectIntOp>(loc, selectTy,
values, zero, zero);
off = rewriter.create<Torch::AtenItemOp>(loc, valuesETy, off);
Value on = rewriter.create<Torch::AtenSelectIntOp>(loc, selectTy,
values, zero, one);
on = rewriter.create<Torch::AtenItemOp>(loc, valuesETy, on);
auto i32Ty = rewriter.getIntegerType(32, true);
llvm::SmallVector<int64_t> onehotShape(indicesTy.getSizes());
onehotShape.push_back(Torch::kUnknownSize);
auto onehotTy =
rewriter.getType<Torch::ValueTensorType>(onehotShape, i32Ty);
Value onehot = rewriter.create<Torch::AtenOneHotOp>(
binder.getLoc(), onehotTy, indices, depth);
for (int i = valuesTy.getSizes().size(); i > axis; ++i) {
std::swap(onehotShape[i - 1], onehotShape[i]);
Value iv0 = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(i));
Value iv1 = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(i - 1));
onehotTy =
rewriter.getType<Torch::ValueTensorType>(onehotShape, i32Ty);
onehot = rewriter.create<Torch::AtenTransposeIntOp>(loc, resultType,
onehot, iv1, iv0);
}
// Change one hot to an array of booleans to select value:
auto i1Ty = rewriter.getI1Type();
auto torchqTy = Torch::getScalarTypeForType(i1Ty);
Value tyConst = rewriter.create<Torch::ConstantIntOp>(
binder.getLoc(), rewriter.getType<Torch::IntType>(),
rewriter.getIntegerAttr(rewriter.getIntegerType(64),
static_cast<int64_t>(torchqTy)));
onehotTy = rewriter.getType<Torch::ValueTensorType>(onehotShape, i1Ty);
Value none = rewriter.create<Torch::ConstantNoneOp>(loc);
Value cstFalse = rewriter.create<Torch::ConstantBoolOp>(loc, false);
onehot = rewriter.create<Torch::AtenToDtypeOp>(
loc, onehotTy, onehot, tyConst,
/*non_blocking=*/cstFalse, /*copy=*/cstFalse,
/*memory_format=*/none);
onehot = rewriter.create<Torch::AtenWhereScalarOp>(loc, resultType,
onehot, on, off);
rewriter.replaceOp(binder.op, onehot);
return success();
});
patterns.onOp("HardSwish", 14,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value input;
if (binder.tensorOperand(input) ||
binder.tensorResultType(resultType)) {
return failure();
}
rewriter.replaceOpWithNewOp<Torch::AtenHardswishOp>(
binder.op, resultType, input);
return success();
});
patterns.onOp(
"Hardmax", 13, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
// onnx.Hardmax can be expanded into the following python code:
//
// import torch.nn.functional as F
// def hardmax(tensor, dim=-1):
// maximums = torch.argmax(tensor, dim=dim, keepdim=False)
// return F.one_hot(maximums)
//
// Given an example input:
// tensor([[1, 2, 3],
// [4, 6, 5],
// [9, 8, 7]])
// Above code yields the following:
// tensor([[0, 0, 1],
// [0, 1, 0],
// [1, 0, 0]])
Torch::ValueTensorType resultType;
int64_t axisValue;
Value input, axis;
if (binder.tensorOperand(input) ||
binder.s64IntegerAttr(axisValue, "axis") ||
binder.tensorResultType(resultType))
return failure();
auto loc = binder.getLoc();
std::optional<int64_t> axisIntTorch =
onnxDtypeIntToTorchDtypeInt(axisValue);
if (!axisIntTorch.has_value())
return rewriter.notifyMatchFailure(
binder.op, "unimplemented support for the given axis conversion");
axis = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(axisIntTorch.value()));
// torch.argmax
Value constKeepDims = rewriter.create<Torch::ConstantBoolOp>(
loc, rewriter.getType<Torch::BoolType>(),
rewriter.getBoolAttr(false));
Value argmax = rewriter.create<Torch::AtenArgmaxOp>(
loc, resultType, input, axis, constKeepDims);
// one_hot
Value oneInt = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(1));
rewriter.replaceOpWithNewOp<Torch::AtenOneHotOp>(binder.op, resultType,
argmax, oneInt);
return success();
});
patterns.onOp(
"LpNormalization", 1,
[](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
int64_t axis, p;
Value input;
if (binder.tensorOperand(input) ||
binder.s64IntegerAttr(axis, "axis", -1) ||
binder.s64IntegerAttr(p, "p", 2) ||
binder.tensorResultType(resultType))
return failure();
auto loc = binder.getLoc();
Value cstAxis = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(axis));
Value cstP = rewriter.create<Torch::ConstantIntOp>(
loc, rewriter.getI64IntegerAttr(p));
Value cstKeepDim = rewriter.create<Torch::ConstantBoolOp>(
loc, rewriter.getBoolAttr(true));
Value axisPrimList = rewriter.create<Torch::PrimListConstructOp>(
binder.getLoc(),
rewriter.getType<Torch::ListType>(
rewriter.getType<Torch::IntType>()),
llvm::ArrayRef<Value>{cstAxis});
rewriter.replaceOpWithNewOp<Torch::AtenNormScalarOptDimOp>(
binder.op, resultType, input, cstP, axisPrimList, cstKeepDim);
return success();
});
patterns.onOp(
"MaxUnpool", 9, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
// TODO: Add support for `output_shape` arg.
if (binder.op->getNumOperands() == 3)
return rewriter.notifyMatchFailure(
binder.op, "unimplemented: output_shape arg is not supported");
Torch::ValueTensorType resultType;
Value data, indices;
if (binder.tensorOperandAtIndex(data, 0) ||
binder.tensorOperandAtIndex(indices, 1) ||
binder.tensorResultType(resultType))
return rewriter.notifyMatchFailure(
binder.op, "data/indices/resultType bind failure");
std::optional<unsigned> maybeRank = Torch::getTensorRank(data);
if (!maybeRank)
return rewriter.notifyMatchFailure(binder.op,
"Unimplemented: unranked tensor");
int64_t rank = *maybeRank;
int64_t spatial = rank - 2;
if (rank <= 3 || rank > 5)
return rewriter.notifyMatchFailure(binder.op,
"Unimplemented: MaxUnpool support "
"only present for rank 4/5 input");
if (!(resultType.hasSizes() && resultType.areAllSizesKnown()))
return rewriter.notifyMatchFailure(
binder.op, "unimplemented: expected result to have all shapes "
"statically known");
SmallVector<int64_t> resultShape(resultType.getSizes());
Value resultShapeList =
createConstantIntList(binder, rewriter, resultShape);
if (rank == 4) {
rewriter.replaceOpWithNewOp<Torch::AtenMaxUnpool2dOp>(
binder.op, resultType, data, indices, resultShapeList);
return success();
}
SmallVector<int64_t> padding, strides;
if (binder.s64IntegerArrayAttr(padding, "pads", {}))
return rewriter.notifyMatchFailure(binder.op, "pads bind failure");
if (!padding.empty() &&
padding.size() != static_cast<size_t>(2 * spatial))
return rewriter.notifyMatchFailure(
binder.op, "padding list must contain (begin,end) pair for each "
"spatial axis");
if (binder.s64IntegerArrayAttr(strides, "strides", {}))
return rewriter.notifyMatchFailure(binder.op, "strides bind failure");
if (!strides.empty() && strides.size() != static_cast<size_t>(spatial))
return rewriter.notifyMatchFailure(
binder.op, "strides list size does not match the number of axes");
if (padding.empty())
padding.resize(spatial, 0);
if (strides.empty())
strides.resize(spatial, 1);
// If the padding is symmetric we can push the padding
// operation to the torch operator.
if (padding.size() == static_cast<size_t>(2 * spatial)) {
bool equal = true;
for (int i = 0; i < spatial; ++i) {
equal = equal && (padding[i] == padding[i + spatial]);
}
if (equal)
padding.resize(spatial);
}
Value paddingList = createConstantIntList(binder, rewriter, padding);
Value stridesList = createConstantIntList(binder, rewriter, strides);
rewriter.replaceOpWithNewOp<Torch::AtenMaxUnpool3dOp>(
binder.op, resultType, data, indices, resultShapeList, stridesList,
paddingList);
return success();
});
}