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authorMitja Felicijan <mitja.felicijan@gmail.com>2026-02-12 20:57:17 +0100
committerMitja Felicijan <mitja.felicijan@gmail.com>2026-02-12 20:57:17 +0100
commitb333b06772c89d96aacb5490d6a219fba7c09cc6 (patch)
tree211df60083a5946baa2ed61d33d8121b7e251b06 /llama.cpp/ggml/src/ggml-cann/aclnn_ops.h
downloadllmnpc-b333b06772c89d96aacb5490d6a219fba7c09cc6.tar.gz
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+/**
+ * Copyright (c) 2023-2026 The ggml authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef CANN_ACLNN_OPS
+#define CANN_ACLNN_OPS
+
+#include "acl_tensor.h"
+#include "common.h"
+
+#include <aclnnop/aclnn_abs.h>
+#include <aclnnop/aclnn_arange.h>
+#include <aclnnop/aclnn_argsort.h>
+#include <aclnnop/aclnn_cat.h>
+#include <aclnnop/aclnn_clamp.h>
+#include <aclnnop/aclnn_cos.h>
+#include <aclnnop/aclnn_exp.h>
+#include <aclnnop/aclnn_gelu.h>
+#include <aclnnop/aclnn_gelu_v2.h>
+#include <aclnnop/aclnn_hardsigmoid.h>
+#include <aclnnop/aclnn_hardswish.h>
+#include <aclnnop/aclnn_leaky_relu.h>
+#include <aclnnop/aclnn_log.h>
+#include <aclnnop/aclnn_logsoftmax.h>
+#include <aclnnop/aclnn_neg.h>
+#include <aclnnop/aclnn_norm.h>
+#include <aclnnop/aclnn_relu.h>
+#include <aclnnop/aclnn_sigmoid.h>
+#include <aclnnop/aclnn_sign.h>
+#include <aclnnop/aclnn_silu.h>
+#include <aclnnop/aclnn_sin.h>
+#include <aclnnop/aclnn_slice.h>
+#include <aclnnop/aclnn_sqrt.h>
+#include <aclnnop/aclnn_tanh.h>
+
+#include <functional>
+#include <unordered_set>
+
+/**
+ * @brief Repeats a ggml tensor along each dimension to match the dimensions
+ * of another tensor.
+ *
+ * @details This function repeats the elements of a source ggml tensor along
+ * each dimension to create a destination tensor with the specified
+ * dimensions. The operation is performed using the ACL backend and
+ * executed asynchronously on the device.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The ggml tensor representing the destination, which op is
+ * GGML_OP_REPEAT and specifies the desired dimensions.
+ */
+void ggml_cann_repeat(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies the Leaky ReLU activation function to a tensor using the CANN
+ * backend.
+ *
+ * @details This function computes the Leaky ReLU activation for each element of
+ * the input tensor. The Leaky ReLU function allows a small gradient
+ * when the unit is not active (i.e., when the input is negative). The
+ * Leaky ReLU function is defined as:
+ * \f[
+ * \text{dst} = \max(0, src) + \text{negativeSlope} \cdot \min(0,
+ * src)
+ * \f]
+ * `negativeSlope` is in dst->params.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the result of the Leaky ReLU
+ * activation is stored, which op is `GGML_OP_LEAKY_RELU`
+ */
+void ggml_cann_leaky_relu(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Concatenates multiple tensors along a specified dimension using the
+ * CANN backend.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param tensorList A pointer to the list of tensors to be concatenated.
+ * @param dst The destination tensor where the result of the
+ * concatenation is stored. dst->op is `GGML_OP_CONCAT`.
+ * @param concat_dim The dimension along which the tensors are concatenated.
+ *
+ * @attention tensorList length should be 2 and the dimension using for concat
+ * default to 1.
+ */
+void ggml_cann_concat(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Generates a sequence of evenly spaced values within a specified
+ * interval for a ggml tensor using the CANN backend.
+ *
+ * @details This function creates a sequence of numbers over a specified i
+ * nterval, starting from `start`, ending before `stop`, and
+ * incrementing by `step`. The sequence is stored in the destination
+ * tensor `dst`.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the generated sequence will be stored.
+ * `start`, 'stop' and 'step' are in dst->op_params and dst->op is
+ * `GGML_OP_ARANGE`.
+ */
+void ggml_cann_arange(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies a clamp operation to the elements of a ggml tensor using the
+ * CANN backend.
+ *
+ * @details This function clamps the elements of the input tensor `src` to a
+ * specified range defined by `min` and `max` values. The result is
+ * stored in the destination tensor `dst`. The operation is defined as:
+ * \f[
+ * y = \max(\min(x, max\_value), min\_value)
+ * \f]
+ * where `x` is an element of the input tensor, and `y` is the
+ * corresponding element in the output tensor.
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the clamped values will be stored.
+ * dst->op is `GGML_OP_CLAMP`, `min` and `max` value is in dst->params.
+ */
+void ggml_cann_clamp(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Scales the elements of a ggml tensor by a constant factor using the
+ * CANN backend.
+ *
+ * @details This function multiplies each element of the input tensor `src` by
+ * a scaling factor `scale`, storing the result in the destination
+ * tensor `dst`. The operation is defined as:
+ * \f[
+ * dst = src \times scale
+ * \f]
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the scaled values will be stored.
+ * dst->op is `GGML_OP_SCALE` and `scale` value is in dst->params.
+ */
+void ggml_cann_scale(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Sorts the elements of a ggml tensor and returns the indices that
+ * would sort the tensor using the CANN backend.
+ *
+ * @details This function performs an argsort operation on the input tensor
+ * `src`. It sorts the elements of `src` in either ascending or
+ * descending order, depending on the `GGML_SORT_ORDER_DESC`,
+ * and returns the indices that would sort the original tensor.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the sorted indices will be stored.
+ * dst->op is `GGML_OP_ARGSORT`.
+ */
+void ggml_cann_argsort(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the Layer Normalization for a ggml tensor using the CANN
+ * backend.
+ *
+ * @details This function applies the Layer Normalization operation on the
+ * input tensor `src` and stores the result in the destination tensor
+ * `dst`. Layer Normalization normalizes the features at each sample in
+ * a mini-batch independently. It is commonly used in neural networks
+ * to normalize the activations of a layer by adjusting and scaling
+ * the outputs.
+ * The operation is defined as:
+ * \f[
+ * \text { out }=\frac{x-\mathrm{E}[x]}{\sqrt{\text{Var}[x]+eps}}
+ * \f]
+ * `Var` defaults dst->ne[0]. `eps` is in dst->params.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the normalized values will be stored.
+ * @attention `Var` defaults to dst->ne[0].
+ */
+void ggml_cann_norm(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the L2 Normalization for a ggml tensor using the CANN
+ * backend.
+ *
+ * @details This function applies the L2 Normalization operation on the
+ * input tensor `src` and stores the result in the destination tensor
+ * `dst`. L2 Normalization scales the input tensor such that the
+ * L2 norm along the specified dimension equals 1. This operation
+ * is commonly used in neural networks for feature normalization
+ * and vector scaling.
+ * The operation is defined as:
+ * \f[
+ * \text{out} = \frac{x}{\sqrt{\sum{x^2}}}
+ * \f]
+ * The normalization is performed along the last dimension by default.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the normalized values will be stored.
+ * @attention The normalization is performed along the last dimension of the
+ * input tensor by default.
+ */
+void ggml_cann_l2_norm(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the Cross Entropy Loss for a ggml tensor using the CANN
+ * backend.
+ *
+ * @details This function computes the cross entropy loss between the predicted
+ * logits and target probability distributions. The operation follows
+ * the same computation pattern as the CPU implementation:
+ * 1. Applies log_softmax to the logits along the class dimension
+ * 2. Element-wise multiplication with target distributions
+ * 3. Summation along the class dimension to get per-sample losses
+ * 4. Global summation and scaling by -1/nr to get final loss
+ *
+ * The computation can be expressed as:
+ * \f[
+ * \text{loss} = -\frac{1}{N} \sum_{i=1}^{N} \sum_{j=1}^{C} y_{ij} \cdot \log(\text{softmax}(x_{ij}))
+ * \f]
+ * where \f$N\f$ is the total number of samples, \f$C\f$ is the number
+ * of classes, \f$x\f$ are the logits, and \f$y\f$ are the target
+ * probability distributions.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the computed loss will be stored.
+ * This should be a scalar tensor containing the final loss value.
+ *
+ * @note This implementation computes cross entropy between probability
+ * distributions, not the typical classification cross entropy that
+ * expects class indices as targets. Both input tensors (src0 and src1)
+ * should have the same shape and represent probability distributions
+ * over the class dimension.
+ * @note The function expects two source tensors:
+ * - dst->src[0]: Logits tensor (before softmax)
+ * - dst->src[1]: Target probability distributions tensor
+ * @note The computation is performed using CANN backend operators including
+ * LogSoftmax, Mul, ReduceSum, and Muls for the final scaling.
+ */
+void ggml_cann_cross_entropy_loss(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the Group Normalization for a ggml tensor using the CANN
+ * backend.
+ *
+ * @brief This function applies the Group Normalization operation on the input
+ * tensor `src` and stores the result in the destination tensor `dst`.
+ * Group Normalization divides the channels into groups and normalizes
+ * the features within each group across spatial locations.
+ * It is commonly used in convolutional neural networks to improve
+ * training stability and performance.
+ * The operation is defined as:
+ * \f[
+ * \text { out }=\frac{x-\mathrm{E}[x]}{\sqrt{\text{Var}[x]+eps}}
+ * \f]
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the normalized values will be stored.
+ * `n_groups` is in dst->params, which split C channel to `n_groups`.
+ * dst->op is `GGML_OP_GROUP_NORM`.
+ *
+ * @attention eps defaults to 1e-6f.
+ */
+void ggml_cann_group_norm(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the accumulation of tensors using the CANN backend.
+ *
+ * @details This function performs an accumulation operation on two tensors.
+ * Depending on the `inplace` flag, it either updates the destination
+ * tensor `dst` in place by adding `alpha * src1` to it, or it creates
+ * a new tensor as the result of `src0 + alpha * src1` and stores it in
+ * `dst`.
+ * The operation is defined as:
+ * \f[
+ * dst = src0 + alpha \times src1
+ * \f]
+ * if `inplace` is `true`, `src0` is equal to 'dst'.
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the accumulated values will be stored.
+ * `inplace` is in dst->params, and dst->op is `GGML_OP_ACC`.
+ */
+void ggml_cann_acc(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the sum of elements along the last dimension of a ggml tensor
+ * using the CANN backend.
+ *
+ * @details This function performs a reduction sum operation along the last
+ * dimension of the input tensor `src`. The result of the sum is stored
+ * in the destination tensor `dst`.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the reduced values will be stored。
+ * dst->op is `GGML_OP_SUM_ROWS`.
+ *
+ * @attention `reduce_dims` defaults to 3, which means the last dimension.
+ */
+void ggml_cann_sum_rows(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the sum of elements in a ggml tensor.
+ *
+ * @details This function performs a reduction sum operation along the last
+ * dimension of the input tensor `src`. The result of the sum is stored
+ * in the destination tensor `dst`.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the reduced values will be stored。
+ *
+ */
+
+void ggml_cann_sum(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Upsamples a ggml tensor using nearest neighbor interpolation using
+ * the CANN backend.
+ *
+ * @details This function performs upsampling of the input tensor `src` using
+ * nearest neighbor interpolation. The upsampling is applied to the
+ * height and width dimensions (last two dimensions) of the tensor. The
+ * result is stored in the destination tensor `dst`, which must have
+ * the appropriate dimensions for the upsampled output.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the upsampled values will be stored.
+ * dst->op is `GGML_OP_UPSCALE`.
+ */
+void ggml_cann_upsample_nearest2d(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Pads a ggml tensor to match the dimensions of the destination tensor
+ * using the CANN backend.
+ *
+ * @details This function pads the input tensor `src` so that it matches the
+ * dimensions of the destination tensor `dst`. The amount of padding
+ * is calculated based on the difference in sizes between `src` and
+ * `dst` along each dimension. The padded tensor is stored in `dst`.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor, which specifies the target dimensions for
+ * padding. dst->op is `GGML_OP_PAD`.
+ */
+void ggml_cann_pad(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Executes a 2D pooling operation on a ggml tensor using the CANN
+ * backend.
+ *
+ * @details This function dispatches the execution of a 2D pooling operation on
+ * the input tensor `dst`. The type of pooling (average or max) is
+ * determined by the `op` parameter, which is read from the operation
+ * parameters of `dst`. The function supports average pooling
+ * (`GGML_OP_POOL_AVG`) and max pooling (`GGML_OP_POOL_MAX`). If an
+ * invalid operation is encountered, the function asserts a failure.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor on which the pooling operation is to be
+ * performed. dst->op is `GGML_OP_POOL_2D`.
+ */
+void ggml_cann_pool2d(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Duplicates a ggml tensor using the CANN backend.
+ *
+ * @details This function duplicates the contents of the source tensor `src` to
+ * the destination tensor `dst`. The function supports various tensor
+ * types and configurations, including handling of extra data, type
+ * conversions, and special cases for contiguous and non-contiguous
+ * tensors.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the duplicated data will be stored.
+ * dst->op is `GGML_OP_DUP`
+ *
+ * @attention Only support Fp16/FP32. Not support when src and dst have
+ * different shape and dst is no-contiguous.
+ * @note: This func need to simplify.
+ */
+void ggml_cann_dup(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the Root Mean Square (RMS) normalization of a ggml tensor
+ * using the CANN backend.
+ *
+ * @details This function applies RMS normalization to the input tensor `src`
+ * and stores the result in the destination tensor `dst`. RMS
+ * normalization involves computing the root mean square of the input
+ * tensor along a specified dimension and then dividing each element of
+ * the tensor by this value, adjusted by a small epsilon value to
+ * prevent division by zero.
+ * The operation is defined as:
+ * \f[
+ * \text{RmsNorm}\left(x_i\right)=\frac{x_i}{\text{Rms}(\mathbf{x})} g_i,
+ * \quad \text { where } \text{Rms}(\mathbf{x})=\sqrt{\frac{1}{n} \sum_{i=1}^n x_i^2+e p s}
+ * \f]
+ * `eps` is in dst->op_params.
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the normalized values will be stored.
+ * dst->op is `GGML_OP_RMS_NORM`.
+ */
+void ggml_cann_rms_norm(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies a diagonal mask to the tensor with a specified value.
+ *
+ * @details This function creates a mask tensor filled with ones, then applies
+ * an upper triangular and lower triangular operation to it based on
+ * the number of past elements specified. Afterward, it adds the masked
+ * tensor to the destination tensor in-place.
+ *
+ * @param ctx The backend CANN context used for operations.
+ * @param dst The destination tensor where the result will be stored. dst->op is
+ * `GGML_OP_DIAG_MASK`
+ * @param value The value to use for masking.
+ */
+void ggml_cann_diag_mask(ggml_backend_cann_context & ctx, ggml_tensor * dst, float value);
+
+/**
+ * @brief Performs an image-to-column transformation on the input tensor.
+ *
+ * @details This function takes an input tensor and applies an image-to-column
+ * operation, converting spatial dimensions into column-like
+ * structures suitable for convolutional operations. It supports both
+ * half-precision (F16) and single-precision (F32) floating-point data
+ * types.
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor that stores the result of the operation.
+ * dst->op is `GGML_OP_IM2COL`.
+ */
+void ggml_cann_im2col(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes time step embeddings using sine and cosine functions.
+ *
+ * @details This function calculates time step embeddings by applying sine and
+ * cosine transformations to a given input tensor, which is typically
+ * used in temporal models like diffusion models or transformers to
+ * encode time information effectively.
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor where the result of the embedding operation
+ * will be stored. dst->op is `GGML_OP_TIMESTEP_EMBEDDING`.
+ */
+void ggml_cann_timestep_embedding(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+// @see ggml_cann_dup.
+void ggml_cann_cpy(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the softmax activation with optional masking.
+ *
+ * @details This function computes the softmax activation over the input tensor,
+ * optionally applying a mask and scaling factor. It supports both FP16
+ * and FP32 data types and can handle masking by broadcasting the mask
+ * across rows if necessary.
+ * The function performs the following steps:
+ * 1. Multiplies the input tensor by a scale factor.
+ * 2. Optionally casts the mask tensor to FP32 if it is in FP16 format.
+ * 3. Broadcasts the mask tensor if its dimensions do not match the
+ * input tensor's dimensions.
+ * 4. Adds the mask to the scaled input tensor.
+ * 5. Applies the softmax activation function along the specified
+ * dimension.
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor where the result will be stored. dst->op is
+ * `GGML_OP_SOFTMAX`.
+ */
+void ggml_cann_softmax(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Extracts specific rows from a tensor based on indices.
+ *
+ * @details This function retrieves rows from a source tensor src0 according to
+ * the indices provided in another tensor src1 and stores the result in
+ * a destination tensor (\p dst).
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor where the extracted rows will be stored.
+ */
+void ggml_cann_get_rows(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Writes specific rows into a tensor at positions specified by indices.
+ *
+ * @details This function copies rows from a source tensor into a destination
+ * tensor (\p dst) at the positions indicated by the indices in another
+ * tensor.
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor where the specified rows will be updated.
+ */
+void ggml_cann_set_rows(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Executes matrix multiplication for the given tensor.
+ *
+ * @details This function performs matrix multiplication on the source tensors
+ * associated with the destination tensor. It supports matrix
+ * multiplication F32, F16, and Q8_0.
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor for storing the result of the matrix
+ * multiplication. dst->op is `GGML_OP_MUL_MAT`.
+ */
+void ggml_cann_mul_mat(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies Rotary Positional Embedding (RoPE) to the input tensor.
+ *
+ * @details This function implements the RoPE mechanism, which is a method to
+ * encode positional information into sequence data, particularly
+ * useful in transformer models. It supports both F32 and F16 data
+ * types.
+ *
+ * @param ctx The backend CANN context for executing operations.
+ * @param dst The destination tensor where the RoPE-transformed data will be
+ * stored. dst->op is `GGML_OP_ROPE`.
+ *
+ * @note The function currently does not support cases where the n_dims is less
+ * than the input tensor's first dimension.
+ * @note The function currently does not support cases where the freq_factors is
+ * not NULL.
+ * @note The function currently does not support cases where the ext_factor is
+ * not equal 0.
+ * @note The function currently does not support cases where the freq_scale is
+ * not equal 1.
+ */
+void ggml_cann_rope(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the index of the maximum value along the specified dimension
+ * of a ggml tensor using the CANN backend.
+ *
+ * @details This function performs an argmax operation on the input tensor.
+ * It finds the index of the maximum value along the specified axis
+ * and stores these indices in the destination tensor `dst`. The
+ * operation is executed using the CANN backend for optimized performance.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the indices of the maximum values will
+ * be stored. dst->op is `GGML_OP_ARGMAX`.
+ */
+void ggml_cann_argmax(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Adds two tensors element-wise and stores the result in a destination
+ * tensor.
+ *
+ * This function performs the operation:
+ * \f[
+ * dst = acl\_src0 + alpha \times acl\_src1
+ * \f]
+ * where alpha is a scalar value and defaults to 1.0f.
+ *
+ * @param ctx The context for the CANN backend operations.
+ * @param acl_src0 The first source tensor.
+ * @param acl_src1 The second source tensor.
+ * @param acl_dst The destination tensor where the result will be stored.
+ */
+void aclnn_add(ggml_backend_cann_context & ctx,
+ aclTensor * acl_src0,
+ aclTensor * acl_src1,
+ aclTensor * acl_dst = nullptr);
+
+/**
+ * @brief Sub two tensors element-wise and stores the result in a destination
+ * tensor.
+ *
+ * This function performs the operation:
+ * \f[
+ * dst = acl\_src0 - alpha \times acl\_src1
+ * \f]
+ * where alpha is a scalar value and defaults to 1.0f.
+ *
+ * @param ctx The context for the CANN backend operations.
+ * @param acl_src0 The first source tensor.
+ * @param acl_src1 The second source tensor.
+ * @param acl_dst The destination tensor where the result will be stored.
+ */
+void aclnn_sub(ggml_backend_cann_context & ctx,
+ aclTensor * acl_src0,
+ aclTensor * acl_src1,
+ aclTensor * acl_dst = nullptr);
+
+/**
+ * @brief Performs element-wise multiplication of two tensors and stores the
+ * result in a destination tensor.
+ *
+ * This function performs element-wise multiplication of the tensors `acl_src`
+ * and `acl_other` and stores the result in the destination tensor `acl_dst`.
+ * The operation is defined as:
+ * \f[
+ * \text {acl_dst }_i=\text {acl_src }_i \times \text {acl_other }_i
+ * \f]
+ *
+ * @param ctx The context for the CANN backend operations.
+ * @param acl_src The first tensor for element-wise multiplication.
+ * @param acl_other The second tensor for element-wise multiplication.
+ * @param acl_dst The destination tensor where the result will be stored.
+ */
+void aclnn_mul(ggml_backend_cann_context & ctx,
+ aclTensor * acl_src,
+ aclTensor * acl_other,
+ aclTensor * acl_dst = nullptr);
+
+/**
+ * @brief Matrix division, optionally in-place.
+ *
+ * This function division each element of the source tensor `acl_src` by the
+ * tensor `acl_other` and stores the result in the destination tensor `acl_dst`.
+ * If `inplace` is true, `acl_dst` will not be used and the operation is
+ * performed in-place on `acl_src`. The operation is defined as: \f[
+ * \text{dst}_i = \frac{\text{acl_src}_i}{\text{acl_other}_i}
+ * \f]
+ *
+ * @param ctx The context for the CANN backend operations.
+ * @param acl_src Numerator tensor..
+ * @param acl_other Denominator tensor.
+ * @param acl_dst The destination tensor where the result will be stored if
+ * `inplace` is false.
+ * @param inplace Flag indicating whether to perform the operation in-place on
+ * `acl_src`.
+ */
+void aclnn_div(ggml_backend_cann_context & ctx,
+ aclTensor * acl_src,
+ aclTensor * acl_other,
+ aclTensor * acl_dst = nullptr);
+
+/**
+ * @brief Applies element-wise cosine function to the elements of a tensor.
+ *
+ * This function computes the cosine of each element in the source tensor
+ * `acl_src` and stores the result in the destination tensor `acl_dst`. The
+ * operation is defined as: \f[ \text {acl_dst }_i=\cos \left(\text {acl_src
+ * }_i\right) \f]
+ *
+ * @param ctx The context for the CANN backend operations.
+ * @param acl_src The source tensor on which the cosine function will be
+ * applied.
+ * @param acl_dst The destination tensor where the cosine results will be
+ * stored.
+ */
+void aclnn_cos(ggml_backend_cann_context & ctx, aclTensor * acl_src, aclTensor * acl_dst);
+
+/**
+ * @brief Applies element-wise sine function to the elements of a tensor.
+ *
+ * This function computes the sine of each element in the source tensor
+ `acl_src`
+ * and stores the result in the destination tensor `acl_dst`.
+ * The operation is defined as:
+ * \f[
+ * \text {acl_dst }_i=\sin \left(\text {acl_src }_i\right)
+ * \f]
+
+ * @param ctx The context for the CANN backend operations.
+ * @param acl_src The source tensor on which the sine function will be applied.
+ * @param acl_dst The destination tensor where the sine results will be stored.
+ */
+void aclnn_sin(ggml_backend_cann_context & ctx, aclTensor * acl_src, aclTensor * acl_dst);
+
+/**
+ * @brief Prepares broadcast-compatible ACL tensors for two input tensors and one
+ * output tensor.
+ *
+ * This function checks whether broadcasting is needed between `src0` and `src1`.
+ * If broadcasting is required, it calculates the proper shapes and creates
+ * ACL tensors with broadcast parameters. Otherwise, it directly creates ACL tensors
+ * based on the original tensor shapes.
+ *
+ * @param src0 The first input tensor (reference shape).
+ * @param src1 The second input tensor (possibly broadcasted).
+ * @param dst The destination/output tensor.
+ * @param acl_src0 Output pointer to the created ACL tensor corresponding to src0.
+ * @param acl_src1 Output pointer to the created ACL tensor corresponding to src1.
+ * @param acl_dst Output pointer to the created ACL tensor corresponding to dst.
+ */
+void bcast_shape(ggml_tensor * src0,
+ ggml_tensor * src1,
+ ggml_tensor * dst,
+ acl_tensor_ptr & acl_src0,
+ acl_tensor_ptr & acl_src1,
+ acl_tensor_ptr & acl_dst);
+
+/**
+ * @brief Computes the 1D transposed convolution (deconvolution) of a ggml
+ * tensor using the CANN backend.
+ *
+ * @details This function performs a 1D transposed convolution (also known as
+ * deconvolution) operation on the input tensor. The computed result is stored
+ * in the destination tensor `dst`. The operation is optimized using the CANN
+ * backend for improved performance.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the transposed convolution result
+ * will be stored. dst->op is `GGML_OP_CONV_TRANSPOSE_1D`.
+ */
+void ggml_cann_conv_transpose_1d(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies the ELU (Exponential Linear Unit) activation to a ggml tensor
+ * using the CANN backend.
+ *
+ * @details This function performs an element-wise ELU activation on the input
+ * tensor.
+ * The result is written to the destination tensor `dst` in-place.
+ * The ELU function is defined as:
+ *
+ * \text{ELU}(x) =
+ * \begin{cases}
+ * x, & \text{if } x > 0 \\
+ * \alpha \left( \exp(x) - 1 \right), & \text{if } x \leq 0
+ * \end{cases}
+ *
+ * where α (alpha) is a hyperparameter, typically set to 1.0.
+ * This operation is optimized using the CANN backend for high-performance
+ * inference or training.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the ELU-activated result will be stored.
+ * dst->op is expected to be `GGML_OP_ELU`.
+ */
+void ggml_cann_elu(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Computes the mean of a ggml tensor element-wise using the CANN backend.
+ *
+ * @details This function calculates the element-wise mean of the input tensor.
+ * The result is written to the destination tensor `dst`.
+ * The mean is computed by averaging the values across the entire tensor.
+ *
+ * This operation is optimized using the CANN backend for high-performance inference or training.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the mean result will be stored.
+ * dst->op is expected to be `GGML_OP_MEAN`.
+ */
+void ggml_cann_mean(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies 1D reflect padding to a ggml tensor using the CANN backend.
+ *
+ * @details This function performs 1D reflect padding on the input tensor.
+ * The amount of padding on each side is specified by parameters stored in `dst->op_params`.
+ * The operation reflects the values at the borders of the tensor to generate the padded output.
+ *
+ * This operation is optimized using the CANN backend for high-performance inference or training.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the padded result will be stored.
+ * dst->op is expected to be `GGML_OP_PAD_REFLECT_1D`.
+ */
+void ggml_cann_pad_reflect_1d(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Counts the number of equal elements in two ggml tensors using the CANN backend.
+ *
+ * @details This function performs an element-wise comparison between two input tensors,
+ * and counts the number of positions where the elements are equal. The result is
+ * stored in the destination tensor `dst` as a scalar.
+ *
+ * The operation is optimized using the CANN backend, making it suitable for
+ * high-performance inference or training scenarios.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the result will be stored.
+ * dst->op is expected to be `GGML_OP_COUNT_EQUAL`.
+ */
+void ggml_cann_count_equal(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies the Step activation function to a ggml tensor using the CANN backend.
+ *
+ * @details This function applies a step function element-wise to the input tensor, where
+ * each element is transformed to 1.0 if it is greater than 0, and 0.0 otherwise.
+ * The result is stored in the destination tensor `dst`.
+ *
+ * This operation is accelerated using the CANN backend to improve runtime performance.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the result will be stored.
+ * dst->op is expected to be `GGML_OP_STEP`.
+ */
+void ggml_cann_step(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Performs the Flash Attention extended operator using the CANN backend.
+ *
+ * @details This function implements the memory-efficient Flash Attention algorithm
+ * for computing scaled dot-product attention with hardware acceleration.
+ * The result is stored in the destination tensor `dst`.
+ *
+ * This operation is accelerated using the CANN backend to improve runtime performance.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the result will be stored.
+ * dst->op is expected to be `GGML_OP_FLASH_ATTN_EXT`.
+ */
+void ggml_cann_flash_attn_ext(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Forward Gated Linear Attention on the CANN backend.
+ *
+ * Expects dst->src[0..4] = {k, v, q, g, s} with shape conventions:
+ * k, v, q, g: [D] with outer dims T x H batched as ne[2]=T, ne[1]=H
+ * s: initial state [B, H, D, D], where B is batch and D=C/H
+ * dst holds both outputs (o) and updated state; a scale factor is read from op params.
+ *
+ * The kernel updates per time step l: S_new = g ⊗ S_old + k ⊗ v, then computes o = (S_new^T q) * scale.
+ *
+ * @param ctx Backend context providing stream/allocator utilities.
+ * @param dst Output tensor; src deps are k, v, q, g, s as above.
+ */
+void ggml_cann_gated_linear_attn(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Launches an asynchronous task using the memory allocator.
+ *
+ * This macro submit an asynchronous task on the specified stream.
+ * The task uses memory allocated by the allocator. It is guaranteed
+ * that the memory will not be accessed by other tasks until this task
+ * completes, due to the sequential execution order within the same stream.
+ *
+ * @param OP_NAME aclnn operator name.
+ * @param args Additional arguments required by the task.
+ *
+ * @note
+ * Memory from the allocator will be "freed" immediately and can be
+ * reallocated to other pointers. However, it won't be accessed by any
+ * other task before this asynchronous task ends, because all tasks in the
+ * same stream are executed in queue order.
+ */
+
+# define GGML_CANN_CALL_ACLNN_OP(CTX, OP_NAME, ...) \
+ do { \
+ uint64_t workspaceSize = 0; \
+ aclOpExecutor * executor; \
+ void * workspaceAddr = nullptr; \
+ ACL_CHECK(aclnn##OP_NAME##GetWorkspaceSize(__VA_ARGS__, &workspaceSize, &executor)); \
+ /* workspace should alloced in main thread to keep malloc order when using vmm. */ \
+ if (workspaceSize > 0) { \
+ ggml_cann_pool_alloc workspace_allocator(CTX.pool(), workspaceSize); \
+ workspaceAddr = workspace_allocator.get(); \
+ } \
+ ACL_CHECK(aclnn##OP_NAME(workspaceAddr, workspaceSize, executor, CTX.stream())); \
+ } while (0)
+
+/**
+ * @brief Performs sparse expert-based matrix multiplication using the CANN backend.
+ *
+ * @details This function implements a MoE-style batched matrix multiplication, where each input token
+ * is routed to one or more experts, and each expert corresponds to a specific [D, M] weight matrix
+ * in the source tensor `src0`. The routing indices are provided via the `ids` tensor.
+ *
+ * For each token (from `src1`), the function selects the corresponding expert(s) as specified by `ids`,
+ * performs the matrix multiplication with the selected expert's weight submatrix (from `src0`),
+ * and stores the results in `dst`. This operation is optimized and executed on the CANN backend.
+ *
+ * Dimensions:
+ * - src0: [D, M, A, 1], where A is the number of experts
+ * - src1: [D, B, N, 1], where N is batch size and B is the slot count per sample
+ * - ids : [K, N], where K is the number of experts each token is routed to
+ * - dst : [M, K, N, 1], output tensor storing the result of expert × token multiplication
+ *
+ * The function handles two main modes:
+ * - If `ne12 == 1`, a simpler per-token loop is used.
+ * - TODO: If `ne12 > 1`, grouped multiplication and memory copying is used for efficiency.
+ *
+ * @param ctx The CANN context used for operations.
+ * @param dst The destination tensor where the expert-weighted token outputs are stored.
+ * Expected to be of shape [M, K, N, 1].
+ */
+void ggml_cann_mul_mat_id(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Performs fused ADD + RMS_NORM operation using the CANN backend.
+ *
+ * This function fuses the ADD and RMS_NORM operations into a single kernel call
+ * for better performance. It first adds two input tensors (x1 + x2), then applies
+ * RMS normalization to the result.
+ *
+ * @param ctx The context for the CANN backend operations.
+ * @param dst The ADD operation node, contains the two input tensors to be added.
+ * @param rms_norm_tensor The RMS_NORM operation node, contains the gamma weights
+ * and epsilon parameter.
+ */
+void ggml_cann_op_add_rms_norm_fused(ggml_backend_cann_context & ctx,
+ ggml_tensor * add_node,
+ ggml_tensor * rms_norm_node);
+
+/**
+ * @brief Check whether a tensor is a weight tensor for matrix multiplication.
+ *
+ * @details Checks whether the given tensor serves as weight parameters in matrix multiplication operations,
+ * typically within neural network layers. The function maintains a static set of canonical weight
+ * naming suffixes from Transformer-based architectures. Uses substring matching to identify weight
+ * tensors even with hierarchical naming patterns.
+ *
+ * @param tensor Pointer to the target ggml_tensor object (const-qualified).
+ */
+static bool is_matmul_weight(const ggml_tensor * tensor) {
+ std::string name = ggml_get_name(tensor);
+ static const std::unordered_set<std::string> weight_suffixes{ "output.weight", "attn_q.weight",
+ "attn_k.weight", "attn_v.weight",
+ "attn_output.weight", "ffn_gate.weight",
+ "ffn_up.weight", "ffn_down.weight" };
+
+ for (const auto & suffix : weight_suffixes) {
+ if (name.find(suffix) != std::string::npos) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/**
+ * @brief Applies a element-wise operation to two input tensors using the CANN
+ * backend.
+ *
+ * This templated function takes a binary operator and applies it to two source
+ * tensors
+ * associated with the destination tensor. The function handles broadcasting as
+ * needed.
+ *
+ * @tparam binary_op A callable object (e.g., lambda or function pointer) representing
+ * the binary operation to be performed. It must take three arguments:
+ * (ggml_backend_cann_context&, aclTensor*, aclTensor*, aclTensor*).
+ *
+ * @param ctx The CANN backend context used to manage execution and resources.
+ * @param dst The destination tensor.
+ */
+template <auto binary_op> void ggml_cann_binary_op(ggml_backend_cann_context & ctx, ggml_tensor * dst) {
+ ggml_tensor * src0 = dst->src[0];
+ ggml_tensor * src1 = dst->src[1];
+
+ acl_tensor_ptr acl_src0, acl_src1, acl_dst;
+
+ // Need bcast
+ bcast_shape(src0, src1, dst, acl_src0, acl_src1, acl_dst);
+ binary_op(ctx, acl_src0.get(), acl_src1.get(), acl_dst.get());
+}
+
+/**
+ * @brief Applies a unary operation to an input tensor using the CANN backend.
+ *
+ * This templated function applies a unary operator to the source tensor of `dst`
+ * and stores the result in the destination tensor.
+ *
+ * @tparam unary_op A callable with the signature:
+ * void(ggml_backend_cann_context&, aclTensor *, aclTensor *)
+ * where the first aclTensor is the source and the second is the destination.
+ * @param ctx The CANN backend context for managing resources and execution.
+ * @param dst The destination tensor. Its src[0] is treated as the input tensor.
+ */
+template <void unary_op(ggml_backend_cann_context &, aclTensor *, aclTensor *)>
+void ggml_cann_op_unary(ggml_backend_cann_context & ctx, ggml_tensor * dst) {
+ ggml_tensor * src = dst->src[0];
+
+ acl_tensor_ptr acl_src = ggml_cann_create_tensor(src);
+ acl_tensor_ptr acl_dst = ggml_cann_create_tensor(dst);
+
+ unary_op(ctx, acl_src.get(), acl_dst.get());
+}
+
+/**
+ * @brief Applies a unary operation to a ggml tensor using the CANN backend.
+ *
+ * @details This function applies a unary operation to the input tensor using
+ * a user-provided lambda or callable `unary_op`. The lambda receives the
+ * CANN backend context and two ACL tensors: the source and the destination.
+ *
+ * Internally, this function handles the conversion from GGML tensors to ACL tensors,
+ * calls the provided unary op, and manages resource cleanup. The input is assumed
+ * to be `dst->src[0]`, and the result is written to `dst`.
+ *
+ * This utility simplifies writing unary op wrappers by abstracting tensor preparation.
+ *
+ * @param unary_op A callable that performs the unary operation using CANN ACL APIs.
+ * @param ctx The CANN context for operation execution.
+ * @param dst The destination ggml_tensor where the result will be stored.
+ * The input tensor is assumed to be `dst->src[0]`.
+ *
+ * @see GGML_CANN_CALL_OP_UNARY
+ */
+void ggml_cann_op_unary(std::function<void(ggml_backend_cann_context &, aclTensor *, aclTensor *)> unary_op,
+ ggml_backend_cann_context & ctx,
+ ggml_tensor * dst);
+
+void ggml_cann_ssm_conv(ggml_backend_cann_context & ctx, ggml_tensor * dst);
+
+/**
+ * @brief Applies a gated (GLU-style) unary operation using the CANN backend.
+ *
+ * @details This function performs a gated activation such as GEGLU or ReGLU.
+ * It supports two input modes:
+ *
+ * 1. **Dual input mode**: `dst->src[0]` and `dst->src[1]` are both valid tensors.
+ * These are used directly as the value and gate tensors.
+ *
+ * 2. **Packed input mode**: Only `dst->src[0]` is valid, and it is assumed to
+ * contain a concatenation of value and gate along the first dimension. This tensor
+ * will be split into two equal halves to form the value and gate inputs.
+ *
+ * The function applies a user-provided unary operation (e.g., GELU) to the value tensor,
+ * then multiplies the result in-place with the gate tensor:
+ *
+ * @code
+ * dst = unary_op(value) * gate;
+ * @endcode
+ *
+ * The `swapped` parameter (from `dst->op_params[1]`) allows flipping the
+ * order of value/gate in the packed input case.
+ *
+ * @param unary_op A callable that performs the unary operation using CANN ACL APIs.
+ * It receives (ctx, acl_value_tensor, acl_output_tensor).
+ * @param ctx The CANN context used for execution.
+ * @param dst The destination ggml_tensor. Source tensors are in `dst->src[0]` and optionally `src[1]`.
+ *
+ * @see GGML_CANN_CALL_OP_UNARY_GATED
+ */
+void ggml_cann_op_unary_gated(std::function<void(ggml_backend_cann_context &, aclTensor *, aclTensor *)> unary_op,
+ ggml_backend_cann_context & ctx,
+ ggml_tensor * dst);
+
+/**
+ * @brief Helper macro to call a unary ACL operator via ggml_cann_op_unary.
+ *
+ * This macro wraps the specified ACLNN unary operator name into a lambda expression,
+ * and passes it to `ggml_cann_op_unary`, which handles the common logic for executing
+ * unary ops in the CANN backend.
+ *
+ * Internally, this macro expands to a lambda like:
+ * @code
+ * [](ggml_backend_cann_context& ctx, aclTensor* acl_src, aclTensor* acl_dst) {
+ * GGML_CANN_CALL_ACLNN_OP(ctx, OP_NAME, acl_src, acl_dst);
+ * };
+ * @endcode
+ *
+ * This lambda is then passed to `ggml_cann_op_unary`, which applies the operation.
+ *
+ * @param OP_NAME The name of the ACL unary operator to invoke via GGML_CANN_CALL_ACLNN_OP.
+ *
+ * @see ggml_cann_op_unary
+ * @see GGML_CANN_CALL_ACLNN_OP
+ */
+# define GGML_CANN_CALL_OP_UNARY(OP_NAME) \
+ do { \
+ auto lambda = [](ggml_backend_cann_context & ctx, aclTensor * acl_src, aclTensor * acl_dst) { \
+ GGML_CANN_CALL_ACLNN_OP(ctx, OP_NAME, acl_src, acl_dst); \
+ }; \
+ ggml_cann_op_unary(lambda, ctx, dst); \
+ } while (0)
+
+/**
+ * @brief Helper macro to call a gated unary ACL operator via ggml_cann_op_unary_gated.
+ *
+ * This macro wraps the specified ACLNN unary operator name into a lambda expression,
+ * and passes it to `ggml_cann_op_unary_gated`, which handles the common logic for
+ * executing gated unary ops in the CANN backend.
+ *
+ * Internally, this macro expands to a lambda like:
+ * @code
+ * [](ggml_backend_cann_context& ctx, aclTensor* acl_src, aclTensor* acl_dst) {
+ * GGML_CANN_CALL_ACLNN_OP(ctx, OP_NAME, acl_src, acl_dst);
+ * };
+ * @endcode
+ *
+ * This lambda is then passed to `ggml_cann_op_unary_gated`, which applies the operation.
+ *
+ * @param OP_NAME The name of the ACL unary operator to invoke via GGML_CANN_CALL_ACLNN_OP.
+ *
+ * @see ggml_cann_op_unary_gated
+ * @see GGML_CANN_CALL_ACLNN_OP
+ */
+# define GGML_CANN_CALL_OP_UNARY_GATED(OP_NAME) \
+ do { \
+ auto lambda = [](ggml_backend_cann_context & ctx, aclTensor * acl_src, aclTensor * acl_dst) { \
+ GGML_CANN_CALL_ACLNN_OP(ctx, OP_NAME, acl_src, acl_dst); \
+ }; \
+ ggml_cann_op_unary_gated(lambda, ctx, dst); \
+ } while (0)
+
+#endif // CANN_ACLNN_OPS
+
+/**
+ * @brief Performs outer product operation on two ggml tensors using the CANN backend.
+ *
+ * @details This function computes the outer product of two input tensors (src0 and src1)
+ * and stores the result in the destination tensor. The outer product operation is defined as:
+ * dst[i,j,k,l] = sum_m (src0[i,m,k,l] * src1[j,m,k,l])
+ *
+ * The function supports multiple data types including F32, F16. For floating-point
+ * types, it uses batch matrix multiplication for efficient computation.
+ *
+ * The implementation handles 4D tensor broadcasting and batch processing automatically.
+ *
+ * @param ctx The CANN backend context for operation execution and memory management.
+ * @param dst The destination ggml_tensor where the outer product result will be stored.
+ * The input tensors are assumed to be `dst->src[0]` and `dst->src[1]`.
+ *
+ * @see GGML_CANN_CALL_ACLNN_OP for CANN operator invocation
+ */
+void ggml_cann_out_prod(ggml_backend_cann_context & ctx, ggml_tensor * dst);