/** * @license * Copyright 2019 Google LLC. All Rights Reserved. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ============================================================================= */ import { ENGINE } from '../../engine'; import { customGrad } from '../../gradients'; import { FusedConv2D } from '../../kernel_names'; import { makeTypesMatch } from '../../tensor_util'; import { convertToTensor } from '../../tensor_util_env'; import * as util from '../../util'; import { add } from '../add'; import * as broadcast_util from '../broadcast_util'; import { conv2d as unfusedConv2d } from '../conv2d'; import { conv2DBackpropFilter } from '../conv2d_backprop_filter'; import { conv2DBackpropInput } from '../conv2d_backprop_input'; import * as conv_util from '../conv_util'; import { applyActivation, getFusedBiasGradient, getFusedDyActivation, shouldFuse } from '../fused_util'; import { op } from '../operation'; import { reshape } from '../reshape'; /** * Computes a 2D convolution over the input x, optionally fused with adding a * bias and applying an activation. * * ```js * const inputDepth = 2; * const inShape = [2, 2, 2, inputDepth]; * const outputDepth = 2; * const fSize = 1; * const pad = 0; * const strides = 1; * * const x = tf.tensor4d( [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, * 16], inShape); * const w = tf.tensor4d([-1, 1, -2, 0.5], [fSize, fSize, inputDepth, * outputDepth]); * * tf.fused.conv2d({ x, filter: w, strides, pad, dataFormat: 'NHWC', * dilations: [1, 1], bias: tf.scalar(5), activation: 'relu' }).print(); * ``` * * @param obj An object with the following properties: * @param x The input tensor, of rank 4 or rank 3, of shape * `[batch, height, width, inChannels]`. If rank 3, batch of 1 is * assumed. * @param filter The filter, rank 4, of shape * `[filterHeight, filterWidth, inDepth, outDepth]`. * @param strides The strides of the convolution: `[strideHeight, * strideWidth]`. * @param pad The type of padding algorithm. * - `same` and stride 1: output will be of same size as input, * regardless of filter size. * - `valid` output will be smaller than input if filter is larger * than 1x1. * - For more info, see this guide: * [https://www.tensorflow.org/api_docs/python/tf/nn/convolution]( * https://www.tensorflow.org/api_docs/python/tf/nn/convolution) * @param dataFormat An optional string from: "NHWC", "NCHW". Defaults to * "NHWC". Specify the data format of the input and output data. With the * default format "NHWC", the data is stored in the order of: [batch, * height, width, channels]. Only "NHWC" is currently supported. * @param dilations The dilation rates: `[dilationHeight, dilationWidth]` * in which we sample input values across the height and width dimensions * in atrous convolution. Defaults to `[1, 1]`. If `dilations` is a single * number, then `dilationHeight == dilationWidth`. If it is greater than * 1, then all values of `strides` must be 1. * @param dimRoundingMode A string from: 'ceil', 'round', 'floor'. If none is * provided, it will default to truncate. * @param bias Tensor to be added to the result. * @param activation Name of activation kernel (defaults to `linear`) to be * applied * after biasAdd. * @param preluActivationWeights Tensor of prelu weights to be applied as part * of a `prelu` activation, typically the same shape as `x`. * @param leakyreluAlpha Optional. Alpha to be applied as part of a `leakyrelu` * activation. */ function fusedConv2d_({ x, filter, strides, pad, dataFormat = 'NHWC', dilations = [1, 1], dimRoundingMode, bias, activation = 'linear', preluActivationWeights, leakyreluAlpha }) { activation = activation || 'linear'; if (shouldFuse(ENGINE.state.gradientDepth, activation) === false) { // TODO: Transpose bias and preluActivationWeights properly for NCHW // format before computation. util.assert(dataFormat === 'NHWC', () => `Error in fused conv2d: got dataFormat of ${dataFormat} but ` + `only NHWC is currently supported for the case of gradient depth ` + `is 0 and the activation is not linear.`); let result = unfusedConv2d(x, filter, strides, pad, dataFormat, dilations, dimRoundingMode); if (bias != null) { result = add(result, bias); } return applyActivation(result, activation, preluActivationWeights, leakyreluAlpha); } const $x = convertToTensor(x, 'x', 'conv2d', 'float32'); const $filter = convertToTensor(filter, 'filter', 'conv2d', 'float32'); let x4D = $x; let reshapedTo4D = false; if ($x.rank === 3) { reshapedTo4D = true; x4D = reshape($x, [1, $x.shape[0], $x.shape[1], $x.shape[2]]); } util.assert(x4D.rank === 4, () => `Error in fused conv2d: input must be rank 4, but got rank ` + `${x4D.rank}.`); util.assert($filter.rank === 4, () => `Error in fused conv2d: filter must be rank 4, but got rank ` + `${$filter.rank}.`); conv_util.checkPadOnDimRoundingMode('fused conv2d', pad, dimRoundingMode); const inputChannels = dataFormat === 'NHWC' ? x4D.shape[3] : x4D.shape[1]; util.assert($filter.shape[2] === inputChannels, () => `Error in conv2d: depth of input (${inputChannels}) must match ` + `input depth for filter ${$filter.shape[2]}.`); util.assert(conv_util.eitherStridesOrDilationsAreOne(strides, dilations), () => 'Error in conv2D: Either strides or dilations must be 1. ' + `Got strides ${strides} and dilations '${dilations}'`); const convInfo = conv_util.computeConv2DInfo(x4D.shape, $filter.shape, strides, dilations, pad, dimRoundingMode); let $bias; if (bias != null) { $bias = convertToTensor(bias, 'bias', 'fused conv2d'); [$bias] = makeTypesMatch($bias, $x); // According to TensorFlow, the bias is supposed be a 1-D tensor or a // scalar. // // 3-D or 4-D bias is not disabled for NHWC format, because they are // currently being used in some cases. For examplem in our code base, // https://github.com/tensorflow/tfjs/blob/b53bd47e880367ae57493f0ea628abaf08db2d5d/tfjs-core/src/ops/fused/fused_conv2d_test.ts#L1972. if (dataFormat === 'NHWC') { broadcast_util.assertAndGetBroadcastShape(convInfo.outShape, $bias.shape); } else { util.assert($bias.shape.length <= 1, () => `Error in fused conv2d: only supports scalar or 1-D Tensor ` + `bias for NCHW format but got the bias of ` + `rank-${$bias.shape.length}.`); util.assert($bias.shape.length === 0 || $bias.shape[0] === convInfo.outChannels || $bias.shape[0] === 1, () => `Error in fused conv2d: bias shape (${$bias.shape}) is not ` + `compatible with the number of output channels ` + `(${convInfo.outChannels})`); } } let $preluActivationWeights; if (preluActivationWeights != null) { // PReLU's activation weights could be a scalar, a 1-D tensor or a 3-D // tensor. const alphaShape = preluActivationWeights.shape; util.assert(alphaShape.length <= 1 || alphaShape.length === 3, () => `Error in fused conv2d: only supports scalar, 1-D Tensor or ` + `3-D Tensor PReLU activation weights but got a tensor of ` + `rank-${alphaShape.length}.`); if (alphaShape.length === 1) { // Whether the data format is NCHW or NHWC, the 1-D PReLU activation // weights tensor should be aligned with the output channels of conv2d // result. util.assert(alphaShape[0] === 1 || alphaShape[0] === convInfo.outChannels, () => `Error in fused conv2d: PReLU activation weights ` + `(${alphaShape}) is not compatible with the number of output ` + `channels (${convInfo.outChannels}).`); } else if (alphaShape.length === 3) { // Whether the data format is NCHW or NHWC, the PReLU activation weights // tensor should has the compatible shape with the result of conv2d. try { broadcast_util.assertAndGetBroadcastShape(alphaShape, convInfo.outShape); } catch (e) { const errMsg = `Error in fused conv2d: PReLU activation weights (${alphaShape}) ` + `is not compatible with the output shape of the conv2d ` + `(${convInfo.outShape}).`; throw Error(errMsg); } } $preluActivationWeights = convertToTensor(preluActivationWeights, 'prelu weights', 'fused conv2d'); } const grad = (dy, saved) => { util.assert(dataFormat === 'NHWC', () => `Error in gradient of fused conv2D: got dataFormat of ${dataFormat} but only NHWC is currently supported.`); const [$filter, x4D, y, $bias] = saved; const dyActivation = getFusedDyActivation(dy, y, activation); util.assert(conv_util.tupleValuesAreOne(dilations), () => 'Error in gradient of fused conv2D: ' + `dilation rates greater than 1 ` + `are not yet supported in gradients. Got dilations '${dilations}'`); const xDer = conv2DBackpropInput(x4D.shape, dyActivation, $filter, strides, pad); const filterDer = conv2DBackpropFilter(x4D, dyActivation, $filter.shape, strides, pad); const der = [xDer, filterDer]; if ($bias != null) { const biasDer = getFusedBiasGradient($bias, dyActivation); der.push(biasDer); } return der; }; const inputs = { x: x4D, filter: $filter, bias: $bias, preluActivationWeights: $preluActivationWeights }; const attrs = { strides, pad, dataFormat, dilations, dimRoundingMode, activation, leakyreluAlpha }; // Depending on the the params passed in we will have different number of // inputs and thus a a different number of elements in the gradient. if (bias == null) { const customOp = customGrad((x4D, filter, save) => { let res = // tslint:disable-next-line: no-unnecessary-type-assertion ENGINE.runKernel(FusedConv2D, inputs, attrs); save([filter, x4D, res]); if (reshapedTo4D) { // tslint:disable-next-line: no-unnecessary-type-assertion res = reshape(res, [res.shape[1], res.shape[2], res.shape[3]]); } return { value: res, gradFunc: grad }; }); return customOp(x4D, $filter); } else { const customOpWithBias = customGrad((x4D, filter, bias, save) => { let res = ENGINE.runKernel(FusedConv2D, inputs, attrs); save([filter, x4D, res, bias]); if (reshapedTo4D) { // tslint:disable-next-line: no-unnecessary-type-assertion res = reshape(res, [res.shape[1], res.shape[2], res.shape[3]]); } return { value: res, gradFunc: grad }; }); return customOpWithBias(x4D, $filter, $bias); } } export const conv2d = /* @__PURE__ */ op({ fusedConv2d_ }); //# 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* @license\n * Copyright 2019 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport {ENGINE} from '../../engine';\nimport {customGrad} from '../../gradients';\nimport {FusedConv2D, FusedConv2DAttrs, FusedConv2DInputs} from '../../kernel_names';\nimport {NamedAttrMap} from '../../kernel_registry';\nimport {Tensor, Tensor3D, Tensor4D} from '../../tensor';\nimport {GradSaveFunc, NamedTensorMap} from '../../tensor_types';\nimport {makeTypesMatch} from '../../tensor_util';\nimport {convertToTensor} from '../../tensor_util_env';\nimport {TensorLike} from '../../types';\nimport * as util from '../../util';\nimport {add} from '../add';\nimport * as broadcast_util from '../broadcast_util';\nimport {conv2d as unfusedConv2d} from '../conv2d';\nimport {conv2DBackpropFilter} from '../conv2d_backprop_filter';\nimport {conv2DBackpropInput} from '../conv2d_backprop_input';\nimport * as conv_util from '../conv_util';\nimport {Activation} from '../fused_types';\nimport {applyActivation, getFusedBiasGradient, getFusedDyActivation, shouldFuse} from '../fused_util';\nimport {op} from '../operation';\nimport {reshape} from '../reshape';\n\n/**\n * Computes a 2D convolution over the input x, optionally fused with adding a\n * bias and applying an activation.\n *\n * ```js\n * const inputDepth = 2;\n * const inShape = [2, 2, 2, inputDepth];\n * const outputDepth = 2;\n * const fSize = 1;\n * const pad = 0;\n * const strides = 1;\n *\n * const x = tf.tensor4d( [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,\n * 16], inShape);\n * const w = tf.tensor4d([-1, 1, -2, 0.5], [fSize, fSize, inputDepth,\n * outputDepth]);\n *\n * tf.fused.conv2d({ x, filter: w, strides, pad, dataFormat: 'NHWC',\n * dilations: [1, 1], bias: tf.scalar(5), activation: 'relu' }).print();\n * ```\n *\n * @param obj An object with the following properties:\n * @param x The input tensor, of rank 4 or rank 3, of shape\n *     `[batch, height, width, inChannels]`. If rank 3, batch of 1 is\n * assumed.\n * @param filter The filter, rank 4, of shape\n *     `[filterHeight, filterWidth, inDepth, outDepth]`.\n * @param strides The strides of the convolution: `[strideHeight,\n * strideWidth]`.\n * @param pad The type of padding algorithm.\n *   - `same` and stride 1: output will be of same size as input,\n *       regardless of filter size.\n *   - `valid` output will be smaller than input if filter is larger\n *       than 1x1.\n *   - For more info, see this guide:\n *     [https://www.tensorflow.org/api_docs/python/tf/nn/convolution](\n *          https://www.tensorflow.org/api_docs/python/tf/nn/convolution)\n * @param dataFormat An optional string from: \"NHWC\", \"NCHW\". Defaults to\n *     \"NHWC\". Specify the data format of the input and output data. With the\n *     default format \"NHWC\", the data is stored in the order of: [batch,\n *     height, width, channels]. Only \"NHWC\" is currently supported.\n * @param dilations The dilation rates: `[dilationHeight, dilationWidth]`\n *     in which we sample input values across the height and width dimensions\n *     in atrous convolution. Defaults to `[1, 1]`. If `dilations` is a single\n *     number, then `dilationHeight == dilationWidth`. If it is greater than\n *     1, then all values of `strides` must be 1.\n * @param dimRoundingMode A string from: 'ceil', 'round', 'floor'. If none is\n *     provided, it will default to truncate.\n * @param bias Tensor to be added to the result.\n * @param activation Name of activation kernel (defaults to `linear`) to be\n *     applied\n *      after biasAdd.\n * @param preluActivationWeights Tensor of prelu weights to be applied as part\n *     of a `prelu` activation, typically the same shape as `x`.\n * @param leakyreluAlpha Optional. Alpha to be applied as part of a `leakyrelu`\n *     activation.\n */\nfunction fusedConv2d_<T extends Tensor3D|Tensor4D>({\n  x,\n  filter,\n  strides,\n  pad,\n  dataFormat = 'NHWC',\n  dilations = [1, 1],\n  dimRoundingMode,\n  bias,\n  activation = 'linear',\n  preluActivationWeights,\n  leakyreluAlpha\n}: {\n  x: T|TensorLike,\n  filter: Tensor4D|TensorLike,\n  strides: [number, number]|number,\n  pad: 'valid'|'same'|number|conv_util.ExplicitPadding,\n  dataFormat?: 'NHWC'|'NCHW',\n  dilations?: [number, number]|number,\n  dimRoundingMode?: 'floor'|'round'|'ceil',\n  bias?: Tensor|TensorLike,\n  activation?: Activation,\n  preluActivationWeights?: Tensor,\n  leakyreluAlpha?: number\n}): T {\n  activation = activation || 'linear';\n\n  if (shouldFuse(ENGINE.state.gradientDepth, activation) === false) {\n    // TODO: Transpose bias and preluActivationWeights properly for NCHW\n    // format before computation.\n    util.assert(\n        dataFormat === 'NHWC',\n        () => `Error in fused conv2d: got dataFormat of ${dataFormat} but ` +\n            `only NHWC is currently supported for the case of gradient depth ` +\n            `is 0 and the activation is not linear.`);\n\n    let result = unfusedConv2d(\n        x, filter, strides, pad, dataFormat, dilations, dimRoundingMode);\n    if (bias != null) {\n      result = add(result, bias);\n    }\n\n    return applyActivation(\n               result, activation, preluActivationWeights, leakyreluAlpha) as T;\n  }\n\n  const $x = convertToTensor(x, 'x', 'conv2d', 'float32');\n  const $filter = convertToTensor(filter, 'filter', 'conv2d', 'float32');\n\n  let x4D = $x as Tensor4D;\n  let reshapedTo4D = false;\n\n  if ($x.rank === 3) {\n    reshapedTo4D = true;\n    x4D = reshape($x, [1, $x.shape[0], $x.shape[1], $x.shape[2]]);\n  }\n  util.assert(\n      x4D.rank === 4,\n      () => `Error in fused conv2d: input must be rank 4, but got rank ` +\n          `${x4D.rank}.`);\n  util.assert(\n      $filter.rank === 4,\n      () => `Error in fused conv2d: filter must be rank 4, but got rank ` +\n          `${$filter.rank}.`);\n  conv_util.checkPadOnDimRoundingMode('fused conv2d', pad, dimRoundingMode);\n  const inputChannels = dataFormat === 'NHWC' ? x4D.shape[3] : x4D.shape[1];\n  util.assert(\n      $filter.shape[2] === inputChannels,\n      () => `Error in conv2d: depth of input (${inputChannels}) must match ` +\n          `input depth for filter ${$filter.shape[2]}.`);\n  util.assert(\n      conv_util.eitherStridesOrDilationsAreOne(strides, dilations),\n      () => 'Error in conv2D: Either strides or dilations must be 1. ' +\n          `Got strides ${strides} and dilations '${dilations}'`);\n\n  const convInfo = conv_util.computeConv2DInfo(\n      x4D.shape, $filter.shape, strides, dilations, pad, dimRoundingMode);\n\n  let $bias: Tensor;\n  if (bias != null) {\n    $bias = convertToTensor(bias, 'bias', 'fused conv2d');\n    [$bias] = makeTypesMatch($bias, $x);\n\n    // According to TensorFlow, the bias is supposed be a 1-D tensor or a\n    // scalar.\n    //\n    // 3-D or 4-D bias is not disabled for NHWC format, because they are\n    // currently being used in some cases. For examplem in our code base,\n    // https://github.com/tensorflow/tfjs/blob/b53bd47e880367ae57493f0ea628abaf08db2d5d/tfjs-core/src/ops/fused/fused_conv2d_test.ts#L1972.\n    if (dataFormat === 'NHWC') {\n      broadcast_util.assertAndGetBroadcastShape(convInfo.outShape, $bias.shape);\n    } else {\n      util.assert(\n          $bias.shape.length <= 1,\n          () => `Error in fused conv2d: only supports scalar or 1-D Tensor ` +\n              `bias for NCHW format but got the bias of ` +\n              `rank-${$bias.shape.length}.`);\n\n      util.assert(\n          $bias.shape.length === 0 || $bias.shape[0] === convInfo.outChannels ||\n              $bias.shape[0] === 1,\n          () => `Error in fused conv2d: bias shape (${$bias.shape}) is not ` +\n              `compatible with the number of output channels ` +\n              `(${convInfo.outChannels})`);\n    }\n  }\n\n  let $preluActivationWeights: Tensor;\n  if (preluActivationWeights != null) {\n    // PReLU's activation weights could be a scalar, a 1-D tensor or a 3-D\n    // tensor.\n    const alphaShape = preluActivationWeights.shape;\n    util.assert(\n        alphaShape.length <= 1 || alphaShape.length === 3,\n        () => `Error in fused conv2d: only supports scalar, 1-D Tensor or ` +\n            `3-D Tensor PReLU activation weights but got a tensor of ` +\n            `rank-${alphaShape.length}.`);\n\n    if (alphaShape.length === 1) {\n      // Whether the data format is NCHW or NHWC, the 1-D PReLU activation\n      // weights tensor should be aligned with the output channels of conv2d\n      // result.\n      util.assert(\n          alphaShape[0] === 1 || alphaShape[0] === convInfo.outChannels,\n          () => `Error in fused conv2d: PReLU activation weights ` +\n              `(${alphaShape}) is not compatible with the number of output ` +\n              `channels (${convInfo.outChannels}).`);\n    } else if (alphaShape.length === 3) {\n      // Whether the data format is NCHW or NHWC, the PReLU activation weights\n      // tensor should has the compatible shape with the result of conv2d.\n      try {\n        broadcast_util.assertAndGetBroadcastShape(\n            alphaShape, convInfo.outShape);\n      } catch (e) {\n        const errMsg =\n            `Error in fused conv2d: PReLU activation weights (${alphaShape}) ` +\n            `is not compatible with the output shape of the conv2d ` +\n            `(${convInfo.outShape}).`;\n        throw Error(errMsg);\n      }\n    }\n\n    $preluActivationWeights = convertToTensor(\n        preluActivationWeights, 'prelu weights', 'fused conv2d');\n  }\n\n  const grad = (dy: Tensor4D, saved: Tensor[]) => {\n    util.assert(\n        dataFormat === 'NHWC',\n        () => `Error in gradient of fused conv2D: got dataFormat of ${\n            dataFormat} but only NHWC is currently supported.`);\n\n    const [$filter, x4D, y, $bias] =\n        saved as [Tensor4D, Tensor4D, Tensor4D, Tensor];\n\n    const dyActivation = getFusedDyActivation(dy, y, activation) as Tensor4D;\n\n    util.assert(\n        conv_util.tupleValuesAreOne(dilations),\n        () => 'Error in gradient of fused conv2D: ' +\n            `dilation rates greater than 1 ` +\n            `are not yet supported in gradients. Got dilations '${dilations}'`);\n\n    const xDer =\n        conv2DBackpropInput(x4D.shape, dyActivation, $filter, strides, pad);\n    const filterDer =\n        conv2DBackpropFilter(x4D, dyActivation, $filter.shape, strides, pad);\n    const der: Tensor[] = [xDer, filterDer];\n\n    if ($bias != null) {\n      const biasDer = getFusedBiasGradient($bias, dyActivation);\n      der.push(biasDer);\n    }\n    return der;\n  };\n\n  const inputs: FusedConv2DInputs = {\n    x: x4D,\n    filter: $filter,\n    bias: $bias,\n    preluActivationWeights: $preluActivationWeights\n  };\n\n  const attrs: FusedConv2DAttrs = {\n    strides,\n    pad,\n    dataFormat,\n    dilations,\n    dimRoundingMode,\n    activation,\n    leakyreluAlpha\n  };\n\n  // Depending on the the params passed in we will have different number of\n  // inputs and thus a a different number of elements in the gradient.\n  if (bias == null) {\n    const customOp =\n        customGrad((x4D: Tensor4D, filter: Tensor4D, save: GradSaveFunc) => {\n          let res: Tensor4D|Tensor3D =\n              // tslint:disable-next-line: no-unnecessary-type-assertion\n              ENGINE.runKernel(\n                  FusedConv2D, inputs as unknown as NamedTensorMap,\n                  attrs as unknown as NamedAttrMap);\n\n          save([filter, x4D, res]);\n\n          if (reshapedTo4D) {\n            // tslint:disable-next-line: no-unnecessary-type-assertion\n            res = reshape(res, [res.shape[1], res.shape[2], res.shape[3]]) as\n                Tensor3D;\n          }\n\n          return {value: res, gradFunc: grad};\n        });\n    return customOp(x4D, $filter) as T;\n  } else {\n    const customOpWithBias = customGrad(\n        (x4D: Tensor4D, filter: Tensor4D, bias: Tensor, save: GradSaveFunc) => {\n          let res: Tensor4D|Tensor3D = ENGINE.runKernel(\n              FusedConv2D, inputs as unknown as NamedTensorMap,\n              attrs as unknown as NamedAttrMap);\n\n          save([filter, x4D, res, bias]);\n\n          if (reshapedTo4D) {\n            // tslint:disable-next-line: no-unnecessary-type-assertion\n            res = reshape(res, [res.shape[1], res.shape[2], res.shape[3]]) as\n                Tensor3D;\n          }\n\n          return {value: res, gradFunc: grad};\n        });\n\n    return customOpWithBias(x4D, $filter, $bias) as T;\n  }\n}\nexport const conv2d = /* @__PURE__ */ op({fusedConv2d_});\n"]}