#pragma once
// This file contains primitives that expose the tensor core PTX instructions for CUDA code.
// The primitives can be used in a similar way as the nvcuda::wmma interface but with a well-defined memory layout.
// The documentation for the PTX instructions can be found under:
//   https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#matrix-multiply-accumulate-operation-using-mma-instruction
//
// Like with nvcuda::wmma there are three types of matrix tiles: A, B, and C with A @ B = C.
// A is a row-major matrix with shape M x K.
// B is a column-major matrix with shape K x N.
// C is a column-major matrix with shape M x N.
// A, B, and C are represented using the same fundamental data type: a row-major matrix with I rows and J columns.
// Note that J is measured in physical 32 bit elements instead of logical elements.
// The methods get_i and get_j can be used to get the physical 32 bit index of the lth element of a thread within a tile.
// All matrix tiles have ne physical 32 bit elements per warp.
//
// As described in the PTX documentation, all pointers for load_ldmatrix must be to shared memory and aligned to 16 bytes.
// The API in this file also assumes that the pointers for load_generic are aligned to 16 bytes, unaligned pointers are considered undefined behavior.

#include "common.cuh"

// On Volta each warp is doing 4 8x8 mma operations in parallel.
// The basic memory layout for a 32x8 output tile is to stack 4 input tiles in I direction and to mirror the B tile.
// However, the i indices in this file are by default permuted to simplify the index calculations.
// #define GGML_CUDA_MMA_NO_VOLTA_PERM

#if CUDART_VERSION >= 11080

static __device__ __forceinline__ int ggml_cuda_movmatrix(const int x) {
    int ret = 0;

#ifdef TURING_MMA_AVAILABLE
    asm("movmatrix.sync.aligned.m8n8.trans.b16 %0, %1;"
        : "=r"(ret) : "r"(x));
#else
    GGML_UNUSED(x);
    NO_DEVICE_CODE;
#endif // defined(TURING_MMA_AVAILABLE)
    return ret;
}

#else

static __device__ __forceinline__ int ggml_cuda_movmatrix(const int x) {
    // Imagine transposing row-major matrix to column-major matrix.
    const int src_i_low  = 2 * (threadIdx.x % 4);
    const int src_i_high = src_i_low + 1;
    const int src_j      = threadIdx.x / 4;

    const int src_laneid_low  = src_i_low  * 4 + src_j / 2;
    const int src_laneid_high = src_i_high * 4 + src_j / 2;

    const int shift_low  = ((src_j + 0) % 2) * 16;
    const int shift_high = ((src_j + 1) % 2) * 16;

    const int ret_low  = (__shfl_sync(0xFFFFFFFF, x, src_laneid_low,  WARP_SIZE) >> shift_low)  & 0x0000FFFF;
    const int ret_high = (__shfl_sync(0xFFFFFFFF, x, src_laneid_high, WARP_SIZE) << shift_high) & 0xFFFF0000;

    return ret_low | ret_high;
}

#endif // CUDART_VERSION >= 11080

static __device__ __forceinline__ half2 ggml_cuda_movmatrix(const half2 x) {
    half2 ret;
    *((int *) &ret) = ggml_cuda_movmatrix(*((const int *) &x));
    return ret;
}

namespace ggml_cuda_mma {

    // Some architectures like Volta or CDNA3 perform multiple matrix multiplications per warp in parallel,
    //     effectively the warp is being split into subgroups of threads that each perform a single mma instruction.
    // In those cases the data can be split in different ways across the warp.
    enum data_layout {
        // By default the data uses the I direction as its major dimension and the J direction as its minor dimension.
        // For the A/C matrices this means I major == row major, J major == column major.
        // For the B matrix this means I major == column major, J major == row major.
        // MIRRORED == Each data value is held exactly once per thread subgroup.
        DATA_LAYOUT_I_MAJOR           =  0, // Always used for Turing, Ampere, Ada Lovelace, consumer Blackwell, matrix A&B for RDNA4 and CDNA.
        DATA_LAYOUT_J_MAJOR           = 10, // Matrix C for CDNA and RDNA4, int and float matrix C for RDNA3.
        DATA_LAYOUT_I_MAJOR_MIRRORED  = 20, // Volta, matrix A&B for RDNA3.
        DATA_LAYOUT_J_MAJOR_MIRRORED  = 30,
    };
    // Implemented mma combinations are:
    //   - (I_MAJOR, I_MAJOR)          -> I_MAJOR
    //   - (I_MAJOR, I_MAJOR_MIRRORED) -> I_MAJOR
    //   - (I_MAJOR, J_MAJOR_MIRRORED) -> I_MAJOR

    static constexpr __device__ data_layout get_input_data_layout() {
#if defined(RDNA3) || defined(VOLTA_MMA_AVAILABLE)
        return DATA_LAYOUT_I_MAJOR_MIRRORED;
#else
        return DATA_LAYOUT_I_MAJOR;
#endif // defined(RDNA3) || defined(VOLTA_MMA_AVAILABLE)
    }

    template <int I_, int J_, typename T, data_layout ds_=DATA_LAYOUT_I_MAJOR>
    struct tile {};

    template <int I_, int J_, typename T>
    struct tile<I_, J_, T, DATA_LAYOUT_I_MAJOR> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_I_MAJOR;

#if defined(AMD_MFMA_AVAILABLE)
        static constexpr int ne = I * J / 64;
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 16 && J ==  8) return true;
            if (I == 32 && J ==  4) return true;
            if (I == 16 && J == 16) return true;
            if (I == 32 && J == 32) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 16 && J == 4) {
                return threadIdx.x % 16;
            } else if constexpr (I == 16 && J == 8) {
                return threadIdx.x % 16;
            } else if constexpr (I == 32 && J == 4) {
                return threadIdx.x % 32;
            } else if constexpr (I == 16 && J == 16) {
                return threadIdx.x % 16;
            } else if constexpr (I == 32 && J == 32) {
                return threadIdx.x % 32;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 16 && J == 4) {
                return threadIdx.x / 16;
            } else if constexpr (I == 16 && J == 8) {
                return 2 * (threadIdx.x / 16) + l;
            } else if constexpr (I == 32 && J == 4) {
                return 2 * (threadIdx.x / 32) + l;
            } else if constexpr (I == 16 && J == 16) {
                return 4 * (threadIdx.x / 16) + l;
            } else if constexpr (I == 32 && J == 32) {
                return 4 * (threadIdx.x / 32) + 8 * (l / 4) + (l % 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif defined(VOLTA_MMA_AVAILABLE)
        static constexpr int ne = I * J / 32;
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 32 && J ==  8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 32 && J == 8) {
#ifdef GGML_CUDA_MMA_NO_VOLTA_PERM
                return (((threadIdx.x % 16) / 4) * 8) + ((threadIdx.x / 16) * 4) + (l & 2) + (threadIdx.x % 2);
#else
                return (l & 2) + (threadIdx.x & ~2);
#endif // GGML_CUDA_MMA_NO_VOLTA_PERM
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 32 && J == 8) {
                return (threadIdx.x & 2) + (l & (4 + 1));
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif defined(AMD_WMMA_AVAILABLE)
        static constexpr int ne = I * J / 32;
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 16 && J == 16) return true;
            if (I == 16 && J == 8) return true;
            if (I == 16 && J == 4) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (supported()) {
                return threadIdx.x % 16;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 16 && J == 16) {
#if defined(RDNA3)
                if constexpr (std::is_same_v<T, float> || std::is_same_v<T, int>) {
                    // matrix C
                    return 2 * l + (threadIdx.x / 16);
                } else {
                    // matrix A&B
                    return l;
                }
#else
                // matrix C is the transposed matrix A&B on RDNA4
                return ne * (threadIdx.x / 16) + l;
#endif // defined(RDNA3)
            } else if constexpr (I == 16 && J == 8) {
                // mmq input for RDNA4
                return ne * (threadIdx.x / 16) + l;
            } else if constexpr (I == 16 && J == 4) {
                return ne * (threadIdx.x / 16) + l;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#else
        static constexpr int ne = I * J / 32;
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I ==  8 && J ==  4) return true;
            if (I ==  8 && J ==  8) return true;
            if (I == 16 && J ==  8) return true;
            if (I == 16 && J == 16) return true;
            if (I == 32 && J ==  8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 8 && J == 4) {
                return threadIdx.x / 4;
            } else if constexpr (I == 8 && J == 8) {
                return threadIdx.x / 4;
            } else if constexpr (I == 16 && J == 8) {
                return ((l / 2) * 8) + (threadIdx.x / 4);
            } else if constexpr (I == 16 && J == 16) {
                return (((l / 2) % 2) * 8) + (threadIdx.x / 4);
            } else if constexpr (I == 32 && J == 8) {
                return tile<16, 8, T>::get_i(l); // Memory layout simply repeated with same pattern in i direction.
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 8 && J == 4) {
                return threadIdx.x % 4;
            } else if constexpr (I == 8 && J == 8) {
                return (l * 4) + (threadIdx.x % 4);
            } else if constexpr (I == 16 && J == 8) {
                return ((threadIdx.x % 4) * 2) + (l % 2);
            } else if constexpr (I == 16 && J == 16) {
                return ((l / 4) * 8) + ((threadIdx.x % 4) * 2) + (l % 2);
            } else if constexpr (I == 32 && J == 8) {
                return tile<16, 8, T>::get_j(l); // Memory layout simply repeated with same pattern in i direction.
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#endif // defined(GGML_USE_HIP)
    };

    template <int I_, int J_>
    struct tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_I_MAJOR;

#if defined(VOLTA_MMA_AVAILABLE)
        static constexpr int ne = I * J / WARP_SIZE;
        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I == 32 && J ==  4) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 32 && J == 4) {
#ifdef GGML_CUDA_MMA_NO_VOLTA_PERM
                return (((threadIdx.x % 16) / 4) * 8) + ((threadIdx.x / 16) * 4) + (threadIdx.x % 4);
#else
                return threadIdx.x;
#endif // GGML_CUDA_MMA_NO_VOLTA_PERM
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 32 && J == 4) {
                return l;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif defined(AMD_WMMA_AVAILABLE)
        static constexpr int ne = I * J / 32;
        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I == 16 && J == 8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 16 && J == 8) {
                return threadIdx.x % 16;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 16 && J == 8) {
                return ne * (threadIdx.x / 16) + l;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif defined(AMD_MFMA_AVAILABLE)
        static constexpr int ne = I * J / 64;
        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I == 16 && J == 8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 16 && J == 8) {
                return threadIdx.x % 16;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 16 && J == 8) {
                return ne * (threadIdx.x / 16) + l;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#else
        static constexpr int ne = I * J / WARP_SIZE;
        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I ==  8 && J ==  4) return true;
            if (I ==  8 && J ==  8) return true;
            if (I == 16 && J ==  8) return true;
            if (I == 16 && J == 16) return true;
            if (I == 32 && J ==  8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 8 && J == 8) {
                return threadIdx.x / 4;
            } else if constexpr (I == 16 && J == 4) {
                return (l * 8) + (threadIdx.x / 4);
            } else if constexpr (I == 16 && J == 8) {
                return ((l % 2) * 8) + (threadIdx.x / 4);
            } else if constexpr (I == 32 && J == 8) {
                return ((l / 4) * 16) + ((l % 2) * 8) + (threadIdx.x / 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 8 && J == 8) {
                return (l * 4) + (threadIdx.x % 4);
            } else if constexpr (I == 16 && J == 4) {
                return threadIdx.x % 4;
            } else if constexpr (I == 16 && J == 8) {
                return ((l / 2) * 4) + (threadIdx.x % 4);
            } else if constexpr (I == 32 && J == 8) {
                return ((l & 2) * 2) + (threadIdx.x % 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#endif // defined(VOLTA_MMA_AVAILABLE)
    };

    template <int I_, int J_>
    struct tile<I_, J_, nv_bfloat162, DATA_LAYOUT_I_MAJOR> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_I_MAJOR;

#if defined(AMD_WMMA_AVAILABLE)
        static constexpr int ne = tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::ne;
        nv_bfloat162 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            return tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::supported();
        }

        static __device__ __forceinline__ int get_i(const int l) {
            return tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::get_i(l);
        }

        static __device__ __forceinline__ int get_j(const int l) {
            return tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::get_j(l);
        }
#elif defined(AMD_MFMA_AVAILABLE)
        static constexpr int ne = tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::ne;
        nv_bfloat162 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            return tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::supported();
        }

        static __device__ __forceinline__ int get_i(const int l) {
            return tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::get_i(l);
        }

        static __device__ __forceinline__ int get_j(const int l) {
            return tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR>::get_j(l);
        }
#else
        static constexpr int ne = I * J / WARP_SIZE;
        nv_bfloat162 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I ==  8 && J ==  8) return true;
            if (I == 16 && J ==  4) return true;
            if (I == 16 && J ==  8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 8 && J == 8) {
                return threadIdx.x / 4;
            } else if constexpr (I == 16 && J == 4) {
                return (l * 8) + (threadIdx.x / 4);
            } else if constexpr (I == 16 && J == 8) {
                return ((l % 2) * 8) + (threadIdx.x / 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 8 && J == 8) {
                return (l * 4) + (threadIdx.x % 4);
            } else if constexpr (I == 16 && J == 4) {
                return threadIdx.x % 4;
            } else if constexpr (I == 16 && J == 8) {
                return ((l / 2) * 4) + (threadIdx.x % 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#endif  // defined(AMD_WMMA_AVAILABLE)
    };

    template <int I_, int J_, typename T>
    struct tile<I_, J_, T, DATA_LAYOUT_J_MAJOR> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_J_MAJOR;

        static constexpr int ne = tile<I_, J_, T, DATA_LAYOUT_I_MAJOR>::ne;
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            return tile<I_, J_, T, DATA_LAYOUT_I_MAJOR>::supported();
        }

        static __device__ __forceinline__ int get_i(const int l) {
            return tile<I_, J_, T, DATA_LAYOUT_I_MAJOR>::get_j(l);
        }

        static __device__ __forceinline__ int get_j(const int l) {
            return tile<I_, J_, T, DATA_LAYOUT_I_MAJOR>::get_i(l);
        }
    };

    template <int I_, int J_, typename T>
    struct tile<I_, J_, T, DATA_LAYOUT_I_MAJOR_MIRRORED> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_I_MAJOR_MIRRORED;

        // RDNA3
        static constexpr int         ne = I * J / 32 * 2;

        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 16 && J == 16) return true;
            if (I == 16 && J == 8)  return true;
            if (I == 16 && J == 4)  return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int /*l*/) {
            if constexpr (supported()) {
                return threadIdx.x % 16;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (supported()) {
                return l;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
    };

    template <int I_, int J_>
    struct tile<I_, J_, half2, DATA_LAYOUT_I_MAJOR_MIRRORED> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_I_MAJOR_MIRRORED;
#if defined(RDNA3)
        static constexpr int         ne = tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::ne;

        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            return tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::supported();
        }

        static __device__ __forceinline__ int get_i(const int l) {
            return tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::get_i(l);
        }

        static __device__ __forceinline__ int get_j(const int l) {
            return tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::get_j(l);
        }
#else // Volta
        static constexpr int         ne = I * J / (WARP_SIZE/4);

        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I ==  8 && J ==  4) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int /*l*/) {
            if constexpr (I == 8 && J == 4) {
                return ((threadIdx.x / 16) * 4) + (threadIdx.x % 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 8 && J == 4) {
                return l;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#endif // defined(RDNA3)
    };

    template <int I_, int J_>
    struct tile<I_, J_, nv_bfloat162, DATA_LAYOUT_I_MAJOR_MIRRORED> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_I_MAJOR_MIRRORED;
        static constexpr int         ne = tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::ne;

        nv_bfloat162 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            return tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::supported();
        }

        static __device__ __forceinline__ int get_i(const int l) {
            return tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::get_i(l);
        }

        static __device__ __forceinline__ int get_j(const int l) {
            return tile<I_, J_, float, DATA_LAYOUT_I_MAJOR_MIRRORED>::get_j(l);
        }
    };

    template <int I_, int J_>
    struct tile<I_, J_, half2, DATA_LAYOUT_J_MAJOR_MIRRORED> {
        static constexpr int         I  = I_;
        static constexpr int         J  = J_;
        static constexpr data_layout dl = DATA_LAYOUT_J_MAJOR_MIRRORED;
        static constexpr int         ne = I * J / (WARP_SIZE/4);

        half2 x[ne] = {{0.0f, 0.0f}};

        static constexpr __device__ bool supported() {
            if (I ==  8 && J ==  4) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 8 && J == 4) {
                return ((l / 2) * 4) + (threadIdx.x % 4);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 8 && J == 4) {
                return ((threadIdx.x / 16) * 2) + (l % 2);
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
    };

#if defined(TURING_MMA_AVAILABLE)
    template <int I, int J>
    static __device__ __forceinline__ tile<I, J/2, half2> get_half2(const tile<I, J, float> & tile_float) {
        tile<I, J/2, half2> ret;
#pragma unroll
        for (int l0 = 0; l0 < tile_float.ne; l0 += 2) {
            ret.x[l0/2] = make_half2(tile_float.x[l0 + 0], tile_float.x[l0 + 1]);
        }
        return ret;
    }

    static __device__ __forceinline__ tile<8, 8, half2> get_transposed(const tile<16, 4, half2> & t) {
        tile<8, 8, half2> ret;
        ret.x[0] = ggml_cuda_movmatrix(t.x[0]);
        ret.x[1] = ggml_cuda_movmatrix(t.x[1]);

        return ret;
    }
#elif defined(AMD_WMMA_AVAILABLE) || defined(AMD_MFMA_AVAILABLE)
    template <int I, int J>
    static __device__ __forceinline__ tile<I, J/2, half2> get_half2(const tile<I, J, float> & tile_float) {
        tile<I, J/2, half2> ret;
#pragma unroll
        for (int l0 = 0; l0 < tile_float.ne; l0 += 2) {
            ret.x[l0/2] = make_half2(tile_float.x[l0 + 0], tile_float.x[l0 + 1]);
        }
        return ret;
    }

    static __device__ __forceinline__ tile<8, 8, half2> get_transposed(const tile<16, 4, half2> & t) {
        NO_DEVICE_CODE;
        return tile<8, 8, half2>{};
    }
#else // Volta
    template <int I, int J>
    static __device__ __forceinline__ tile<I, J/2, half2> get_half2(const tile<I, J, float> & tile_float) {
        tile<I, J/2, half2> ret;
#pragma unroll
        for (int l0 = 0; l0 < tile_float.ne; l0 += 4) {
            ret.x[l0/2 + 0] = make_half2(tile_float.x[l0 + 0], tile_float.x[l0 + 1]);
            ret.x[l0/2 + 1] = make_half2(tile_float.x[l0 + 2], tile_float.x[l0 + 3]);

            // On Volta FP16 and FP32 tiles have a different memory layout,
            //     for the conversion threads with an offset of 2 need to exchange half their values:
            ret.x[l0/2 + (((threadIdx.x % 4) / 2) ^ 1)] = __shfl_xor_sync(
                0xFFFFFFFF, ret.x[l0/2 + (((threadIdx.x % 4) / 2) ^ 1)], 2, WARP_SIZE);
        }
        return ret;
    }
#endif // defined(TURING_MMA_AVAILABLE)

    template <int I, int J, typename T, data_layout dl>
    static __device__ __forceinline__ void load_generic(tile<I, J, T, dl> & t, const T * __restrict__ xs0, const int stride) {
#pragma unroll
        for (int l = 0; l < t.ne; ++l) {
            t.x[l] = xs0[t.get_i(l)*stride + t.get_j(l)];
        }
    }

    template <typename T>
    static __device__ __forceinline__ void load_ldmatrix(
            tile<8, 8, T> & t, const T * __restrict__ xs0, const int stride) {
#ifdef TURING_MMA_AVAILABLE
        int * xi = (int *) t.x;
        const int * xs = (const int *) xs0 + (threadIdx.x % t.I) * stride + ((threadIdx.x / t.I) * (t.J / 2)) % t.J;
        asm volatile("ldmatrix.sync.aligned.m8n8.x2.b16 {%0, %1}, [%2];"
            : "=r"(xi[0]), "=r"(xi[1])
            : "l"(xs));
#else
        GGML_UNUSED_VARS(t, xs0, stride);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    template <typename T, data_layout dl>
    static __device__ __forceinline__ void load_ldmatrix(
            tile<16, 4, T, dl> & t, const T * __restrict__ xs0, const int stride) {
#ifdef TURING_MMA_AVAILABLE
        int * xi = (int *) t.x;
        const int * xs = (const int *) xs0 + (threadIdx.x % t.I) * stride;
        asm volatile("ldmatrix.sync.aligned.m8n8.x2.b16 {%0, %1}, [%2];"
            : "=r"(xi[0]), "=r"(xi[1])
            : "l"(xs));
#elif defined(AMD_WMMA_AVAILABLE)
#ifdef RDNA3
        static_assert(dl == DATA_LAYOUT_I_MAJOR_MIRRORED, "bad data layout");
        static_assert(sizeof(t.x) == 16, "bad ne");
        ggml_cuda_memcpy_1<8>(t.x + 0, xs0 + t.get_i(0)*stride + 0);
        ggml_cuda_memcpy_1<8>(t.x + 2, xs0 + t.get_i(0)*stride + 2);
#else
        static_assert(dl == DATA_LAYOUT_I_MAJOR, "bad data layout");
        static_assert(sizeof(t.x) == 8, "bad ne");
        ggml_cuda_memcpy_1<8>(t.x, xs0 + t.get_i(0)*stride + t.get_j(0));
#endif // RDNA3
#elif defined(AMD_MFMA_AVAILABLE)
        static_assert(sizeof(t.x) == 4, "bad ne");
        ggml_cuda_memcpy_1<4>(t.x, xs0 + t.get_i(0)*stride + t.get_j(0));
#else
        GGML_UNUSED_VARS(t, xs0, stride);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    template <typename T, data_layout dl>
    static __device__ __forceinline__ void load_ldmatrix(
            tile<16, 8, T, dl> & t, const T * __restrict__ xs0, const int stride) {
#if defined(TURING_MMA_AVAILABLE)
        int * xi = (int * ) t.x;
        const int * xs = (const int *) xs0 + (threadIdx.x % t.I) * stride + (threadIdx.x / t.I) * (t.J / 2);
        asm volatile("ldmatrix.sync.aligned.m8n8.x4.b16 {%0, %1, %2, %3}, [%4];"
            : "=r"(xi[0]), "=r"(xi[1]), "=r"(xi[2]), "=r"(xi[3])
            : "l"(xs));
#elif defined(VOLTA_MMA_AVAILABLE)
        ggml_cuda_memcpy_1<4*sizeof(T)>(t.x + 0, xs0 + t.get_i(0)*stride + 0);
        ggml_cuda_memcpy_1<4*sizeof(T)>(t.x + 4, xs0 + t.get_i(4)*stride + 4);
#elif defined(AMD_WMMA_AVAILABLE)
#ifdef RDNA3
        static_assert(dl == DATA_LAYOUT_I_MAJOR_MIRRORED, "bad data layout");
        static_assert(sizeof(t.x) == 32, "bad ne");
        ggml_cuda_memcpy_1<16>(t.x + 0, xs0 + t.get_i(0)*stride + 0);
        ggml_cuda_memcpy_1<16>(t.x + 4, xs0 + t.get_i(0)*stride + 4);
#else
        static_assert(dl == DATA_LAYOUT_I_MAJOR, "bad data layout");
        static_assert(sizeof(t.x) == 16, "bad ne");
        ggml_cuda_memcpy_1<16>(t.x, xs0 + t.get_i(0)*stride + t.get_j(0));
#endif // RDNA3
#elif defined(AMD_MFMA_AVAILABLE)
        static_assert(sizeof(t.x) == 8, "bad ne");
        ggml_cuda_memcpy_1<8>(t.x, xs0 + t.get_i(0)*stride + t.get_j(0));
#else
        GGML_UNUSED_VARS(t, xs0, stride);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void load_ldmatrix(
            tile<8, 4, half2, DATA_LAYOUT_I_MAJOR_MIRRORED> & t, const half2 * __restrict__ xs0, const int stride) {
        ggml_cuda_memcpy_1<4*sizeof(half2)>(t.x, xs0 + t.get_i(0)*stride);
    }

    static __device__ __forceinline__ void load_ldmatrix(
            tile<8, 4, half2, DATA_LAYOUT_J_MAJOR_MIRRORED> & t, const half2 * __restrict__ xs0, const int stride) {
#pragma unroll
        for (int l0 = 0; l0 < t.ne; l0 += 2) {
            ggml_cuda_memcpy_1<2*sizeof(half2)>(t.x + l0, xs0 + t.get_i(l0)*stride + t.get_j(l0));
        }
    }

    static __device__ __forceinline__ void load_ldmatrix(
            tile<32, 4, half2> & t, const half2 * __restrict__ xs0, const int stride) {
#if defined(VOLTA_MMA_AVAILABLE)
        ggml_cuda_memcpy_1<4*sizeof(half2)>(t.x, xs0 + t.get_i(0)*stride);
#else
        GGML_UNUSED_VARS(t, xs0, stride);
        NO_DEVICE_CODE;
#endif // defined(VOLTA_MMA_AVAILABLE)
    }

    template <typename T>
    static __device__ __forceinline__ void load_ldmatrix_trans(
            tile<16, 8, T> & t, const T * __restrict__ xs0, const int stride) {
#ifdef TURING_MMA_AVAILABLE
        int * xi = (int *) t.x;
        const int * xs = (const int *) xs0 + (threadIdx.x % t.I) * stride + (threadIdx.x / t.I) * (t.J / 2);
        asm volatile("ldmatrix.sync.aligned.m8n8.x4.trans.b16 {%0, %1, %2, %3}, [%4];"
            : "=r"(xi[0]), "=r"(xi[2]), "=r"(xi[1]), "=r"(xi[3])
            : "l"(xs));
#elif defined(AMD_MFMA_AVAILABLE) || defined(AMD_WMMA_AVAILABLE)
        half * xh = (half *) t.x;
#pragma unroll
        for (int l = 0; l < t.ne; ++l) {
            xh[2*l + 0] = ((const half *) xs0)[(2*t.get_j(l) + 0)*(2*stride) + t.get_i(l)];
            xh[2*l + 1] = ((const half *) xs0)[(2*t.get_j(l) + 1)*(2*stride) + t.get_i(l)];
        }
#else
        GGML_UNUSED_VARS(t, xs0, stride);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<16, 8, int> & D, const tile<16, 4, int> & A, const tile<8, 4, int> & B) {
#ifdef TURING_MMA_AVAILABLE
#if __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
        asm("mma.sync.aligned.m16n8k16.row.col.s32.s8.s8.s32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(D.x[0]), "+r"(D.x[1]), "+r"(D.x[2]), "+r"(D.x[3])
            : "r"(A.x[0]), "r"(A.x[1]), "r"(B.x[0]));
#else
        // On Turing m16n8k16 mma is not available, use 2x m8n8k16 mma instead:
        asm("mma.sync.aligned.m8n8k16.row.col.s32.s8.s8.s32 {%0, %1}, {%2}, {%3}, {%0, %1};"
            : "+r"(D.x[0]), "+r"(D.x[1])
            : "r"(A.x[0]), "r"(B.x[0]));
        asm("mma.sync.aligned.m8n8k16.row.col.s32.s8.s8.s32 {%0, %1}, {%2}, {%3}, {%0, %1};"
            : "+r"(D.x[2]), "+r"(D.x[3])
            : "r"(A.x[1]), "r"(B.x[0]));
#endif // __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<16, 8, int> & D, const tile<16, 8, int> & A, const tile<8, 8, int> & B) {
#ifdef TURING_MMA_AVAILABLE
#if __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
        asm("mma.sync.aligned.m16n8k32.row.col.s32.s8.s8.s32 {%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3};"
            : "+r"(D.x[0]), "+r"(D.x[1]), "+r"(D.x[2]), "+r"(D.x[3])
            : "r"(A.x[0]), "r"(A.x[1]), "r"(A.x[2]), "r"(A.x[3]), "r"(B.x[0]), "r"(B.x[1]));
#else
        // On Turing m16n8k32 mma is not available, use 4x m8n8k16 mma instead:
        asm("mma.sync.aligned.m8n8k16.row.col.s32.s8.s8.s32 {%0, %1}, {%2}, {%3}, {%0, %1};"
            : "+r"(D.x[0]), "+r"(D.x[1])
            : "r"(A.x[0]), "r"(B.x[0]));
        asm("mma.sync.aligned.m8n8k16.row.col.s32.s8.s8.s32 {%0, %1}, {%2}, {%3}, {%0, %1};"
            : "+r"(D.x[2]), "+r"(D.x[3])
            : "r"(A.x[1]), "r"(B.x[0]));
        asm("mma.sync.aligned.m8n8k16.row.col.s32.s8.s8.s32 {%0, %1}, {%2}, {%3}, {%0, %1};"
            : "+r"(D.x[0]), "+r"(D.x[1])
            : "r"(A.x[2]), "r"(B.x[1]));
        asm("mma.sync.aligned.m8n8k16.row.col.s32.s8.s8.s32 {%0, %1}, {%2}, {%3}, {%0, %1};"
            : "+r"(D.x[2]), "+r"(D.x[3])
            : "r"(A.x[3]), "r"(B.x[1]));
#endif // __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<16, 4, half2> & D, const tile<16, 8, half2> & A, const tile<8, 8, half2> & B) {
#ifdef TURING_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
#if __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
        asm("mma.sync.aligned.m16n8k16.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3, %4, %5}, {%6, %7}, {%0, %1};"
            : "+r"(Dxi[0]), "+r"(Dxi[1])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[1]));
#else
        // On Turing m16n8k16 mma is not available, use 2x m8n8k8 mma instead:
        asm("mma.sync.aligned.m16n8k8.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3}, {%4}, {%0, %1};"
            : "+r"(Dxi[0]), "+r"(Dxi[1])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[0]));
        asm("mma.sync.aligned.m16n8k8.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3}, {%4}, {%0, %1};"
            : "+r"(Dxi[0]), "+r"(Dxi[1])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[1]));
#endif // __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<16, 8, half2> & D, const tile<16, 8, half2> & A, const tile<16, 8, half2> & B) {
#ifdef TURING_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
#if __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
        asm("mma.sync.aligned.m16n8k16.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3, %4, %5}, {%6, %7}, {%0, %1};"
            : "+r"(Dxi[0]), "+r"(Dxi[1])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[2]));
        asm("mma.sync.aligned.m16n8k16.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3, %4, %5}, {%6, %7}, {%0, %1};"
            : "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[1]), "r"(Bxi[3]));
#else
        // On Turing m16n8k16 mma is not available, use 4x m8n8k8 mma instead:
        asm("mma.sync.aligned.m16n8k8.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3}, {%4}, {%0, %1};"
            : "+r"(Dxi[0]), "+r"(Dxi[1])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[0]));
        asm("mma.sync.aligned.m16n8k8.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3}, {%4}, {%0, %1};"
            : "+r"(Dxi[0]), "+r"(Dxi[1])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[2]));
        asm("mma.sync.aligned.m16n8k8.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3}, {%4}, {%0, %1};"
            : "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[1]));
        asm("mma.sync.aligned.m16n8k8.row.col.f16.f16.f16.f16 {%0, %1}, {%2, %3}, {%4}, {%0, %1};"
            : "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[3]));
#endif // __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
#elif defined(AMD_WMMA_AVAILABLE)
#if defined(RDNA4)
        using halfx8_t = __attribute__((ext_vector_type(8))) _Float16;
        halfx8_t& acc_frag = reinterpret_cast<halfx8_t&>(D.x[0]);
        const halfx8_t& a_frag = reinterpret_cast<const halfx8_t&>(A.x[0]);
        const halfx8_t& b_frag = reinterpret_cast<const halfx8_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_wmma_f16_16x16x16_f16_w32_gfx12(a_frag, b_frag, acc_frag);
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(RDNA4)
#elif defined(AMD_MFMA_AVAILABLE)
        // MFMA: FP16 input, FP32 accumulate, convert back to half2.
        using halfx4_t = __attribute__((ext_vector_type(4))) _Float16;
        using floatx4_t = __attribute__((ext_vector_type(4))) float;

        // Convert existing half2 accumulator to float for MFMA:
        floatx4_t acc_f32;
        {
            const halfx4_t acc_h = reinterpret_cast<const halfx4_t&>(D.x[0]);
#pragma unroll
            for (int i = 0; i < 4; ++i) {
                acc_f32[i] = (float)acc_h[i];
            }
        }

        const halfx4_t& a_frag = reinterpret_cast<const halfx4_t&>(A.x[0]);
        const halfx4_t& b_frag = reinterpret_cast<const halfx4_t&>(B.x[0]);
        acc_f32 = __builtin_amdgcn_mfma_f32_16x16x16f16(a_frag, b_frag, acc_f32, 0, 0, 0);

        // Convert back to half2:
        {
            halfx4_t result_h;
#pragma unroll
            for (int i = 0; i < 4; ++i) {
                result_h[i] = (_Float16)acc_f32[i];
            }
            reinterpret_cast<halfx4_t&>(D.x[0]) = result_h;
        }
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    template <data_layout dl_ab, data_layout dl_d>
    static __device__ __forceinline__ void mma(
            tile<16, 8, float, dl_d> & D, const tile<16, 8, float, dl_ab> & A, const tile<8, 8, float, dl_ab> & B) {
#ifdef AMPERE_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
        asm("mma.sync.aligned.m16n8k8.row.col.f32.tf32.tf32.f32 {%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[1]));
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // AMPERE_MMA_AVAILABLE
    }

    template <data_layout dl_ab, data_layout dl_d>
    static __device__ __forceinline__ void mma(
            tile<16, 16, float, dl_d> & D, const tile<16, 8, float, dl_ab> & A, const tile<16, 8, float, dl_ab> & B) {
#ifdef AMD_MFMA_AVAILABLE
        using floatx4_t = __attribute__((ext_vector_type(4))) float;
        floatx4_t& acc_frag = reinterpret_cast<floatx4_t&>(D.x[0]);
#if defined(CDNA3)
        using floatx2_t = __attribute__((ext_vector_type(2))) float;
        const floatx2_t& a_frag = reinterpret_cast<const floatx2_t&>(A.x[0]);
        const floatx2_t& b_frag = reinterpret_cast<const floatx2_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_mfma_f32_16x16x8_xf32(a_frag, b_frag, acc_frag, 0, 0, 0);
#elif defined(CDNA4) || defined(CDNA2) || defined(CDNA1)
        // CDNA4 (gfx950) does not support xf32 MFMA, use f32 path like CDNA2/CDNA1
#pragma unroll
        for (int i = 0; i < 2; ++i) {
            acc_frag = __builtin_amdgcn_mfma_f32_16x16x4f32(A.x[i], B.x[i], acc_frag, 0, 0, 0);
        }
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(CDNA3)
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // AMD_MFMA_AVAILABLE
    }

    template <ggml_type type>
    static __device__ __forceinline__ void mma_block_scaled_fp4(tile<16, 8, float> &     D,
                                                                const tile<16, 8, int> & A,
                                                                const tile<8, 8, int> &  B,
                                                                uint32_t                 a_scale,
                                                                uint32_t                 b_scale) {
#ifdef BLACKWELL_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        float *     Dxi = (float *) D.x;

        if constexpr (type == GGML_TYPE_MXFP4) {
            asm volatile(
                "mma.sync.aligned.kind::mxf4.block_scale.scale_vec::2X.m16n8k64.row.col.f32.e2m1.e2m1.f32.ue8m0 "
                "{%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3}, "
                "%10, {0, 0}, %11, {0, 0};"
                : "+f"(Dxi[0]), "+f"(Dxi[1]), "+f"(Dxi[2]), "+f"(Dxi[3])
                : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[1]), "r"(a_scale), "r"(b_scale));
        } else {
            asm volatile(
                "mma.sync.aligned.kind::mxf4nvf4.block_scale.scale_vec::4X.m16n8k64.row.col.f32.e2m1.e2m1.f32.ue4m3 "
                "{%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3}, "
                "%10, {0, 0}, %11, {0, 0};"
                : "+f"(Dxi[0]), "+f"(Dxi[1]), "+f"(Dxi[2]), "+f"(Dxi[3])
                : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[1]), "r"(a_scale), "r"(b_scale));
        }
#else
        GGML_UNUSED_VARS(D, A, B, a_scale, b_scale);
#endif // BLACKWELL_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<16, 8, float> & D, const tile<16, 8, half2> & A, const tile<8, 8, half2> & B) {
#ifdef TURING_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
#if __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
        asm("mma.sync.aligned.m16n8k16.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[1]));
#else
        // On Turing m16n8k16 mma is not available, use 2x m8n8k8 mma instead:
        asm("mma.sync.aligned.m16n8k8.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[0]));
        asm("mma.sync.aligned.m16n8k8.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[1]));
#endif // __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<16, 8, float> & D, const tile<16, 8, nv_bfloat162> & A, const tile<8, 8, nv_bfloat162> & B) {
#ifdef AMPERE_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
        asm("mma.sync.aligned.m16n8k16.row.col.f32.bf16.bf16.f32 {%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[1]));
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // AMPERE_MMA_AVAILABLE
    }

    template <data_layout dl_ab, data_layout dl_d>
    static __device__ __forceinline__ void mma(
            tile<16, 16, float, dl_d> & D, const tile<16, 8, half2, dl_ab> & A, const tile<16, 8, half2, dl_ab> & B) {
#ifdef TURING_MMA_AVAILABLE
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
#if __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
        asm("mma.sync.aligned.m16n8k16.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[0]), "r"(Bxi[2]));
        asm("mma.sync.aligned.m16n8k16.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5, %6, %7}, {%8, %9}, {%0, %1, %2, %3};"
            : "+r"(Dxi[4]), "+r"(Dxi[5]), "+r"(Dxi[6]), "+r"(Dxi[7])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[1]), "r"(Bxi[3]));
#else
        // On Turing m16n8k16 mma is not available, use 4x m8n8k8 mma instead:
        asm("mma.sync.aligned.m16n8k8.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[0]));
        asm("mma.sync.aligned.m16n8k8.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[2]));
        asm("mma.sync.aligned.m16n8k8.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(Dxi[4]), "+r"(Dxi[5]), "+r"(Dxi[6]), "+r"(Dxi[7])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[1]));
        asm("mma.sync.aligned.m16n8k8.row.col.f32.f16.f16.f32 {%0, %1, %2, %3}, {%4, %5}, {%6}, {%0, %1, %2, %3};"
            : "+r"(Dxi[4]), "+r"(Dxi[5]), "+r"(Dxi[6]), "+r"(Dxi[7])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[3]));
#endif // __CUDA_ARCH__ >= GGML_CUDA_CC_AMPERE
#elif defined(AMD_WMMA_AVAILABLE)
#if defined(RDNA4)
        using halfx8_t = __attribute__((ext_vector_type(8))) _Float16;
        using floatx8_t = __attribute__((ext_vector_type(8))) float;
        floatx8_t& acc_frag = reinterpret_cast<floatx8_t&>(D.x[0]);
        const halfx8_t& a_frag = reinterpret_cast<const halfx8_t&>(A.x[0]);
        const halfx8_t& b_frag = reinterpret_cast<const halfx8_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_wmma_f32_16x16x16_f16_w32_gfx12(a_frag, b_frag, acc_frag);
#elif defined(RDNA3)
        using halfx16_t = __attribute__((ext_vector_type(16))) _Float16;
        using floatx8_t = __attribute__((ext_vector_type(8))) float;
        floatx8_t& acc_frag = reinterpret_cast<floatx8_t&>(D.x[0]);
        const halfx16_t& a_frag = reinterpret_cast<const halfx16_t&>(A.x[0]);
        const halfx16_t& b_frag = reinterpret_cast<const halfx16_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_wmma_f32_16x16x16_f16_w32(a_frag, b_frag, acc_frag);
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // RDNA4
#elif defined(AMD_MFMA_AVAILABLE)
        using halfx4_t = __attribute__((ext_vector_type(4))) _Float16;
        using floatx4_t = __attribute__((ext_vector_type(4))) float;
        floatx4_t& acc_frag = reinterpret_cast<floatx4_t&>(D.x[0]);
        const halfx4_t& a_frag = reinterpret_cast<const halfx4_t&>(A.x[0]);
        const halfx4_t& b_frag = reinterpret_cast<const halfx4_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_mfma_f32_16x16x16f16(a_frag, b_frag, acc_frag, 0, 0, 0);
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // TURING_MMA_AVAILABLE
    }

    template <data_layout dl_ab, data_layout dl_d>
    static __device__ __forceinline__ void mma(
            tile<16, 16, float, dl_d> & D, const tile<16, 8, nv_bfloat162, dl_ab> & A, const tile<16, 8, nv_bfloat162, dl_ab> & B) {
#if defined(AMD_WMMA_AVAILABLE)
#if defined(RDNA4)
        using bf16x8_t = __attribute__((ext_vector_type(8))) __bf16;
        using floatx8_t = __attribute__((ext_vector_type(8))) float;
        floatx8_t& acc_frag = reinterpret_cast<floatx8_t&>(D.x[0]);
        const bf16x8_t& a_frag = reinterpret_cast<const bf16x8_t&>(A.x[0]);
        const bf16x8_t& b_frag = reinterpret_cast<const bf16x8_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_wmma_f32_16x16x16_bf16_w32_gfx12(a_frag, b_frag, acc_frag);
#elif defined(RDNA3)
        using bf16x16_t = __attribute__((ext_vector_type(16))) __bf16;
        using floatx8_t = __attribute__((ext_vector_type(8))) float;
        floatx8_t& acc_frag = reinterpret_cast<floatx8_t&>(D.x[0]);
        const bf16x16_t& a_frag = reinterpret_cast<const bf16x16_t&>(A.x[0]);
        const bf16x16_t& b_frag = reinterpret_cast<const bf16x16_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_wmma_f32_16x16x16_bf16_w32(a_frag, b_frag, acc_frag);
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(RDNA4)
#elif defined(AMD_MFMA_AVAILABLE)
        using floatx4_t = __attribute__((ext_vector_type(4))) float;
        floatx4_t& acc_frag = reinterpret_cast<floatx4_t&>(D.x[0]);
#if defined(CDNA4) || defined(CDNA3) || defined(CDNA2)
        using bf16x4_t = __attribute__((ext_vector_type(4))) __bf16;
        const bf16x4_t& a_frag = reinterpret_cast<const bf16x4_t&>(A.x[0]);
        const bf16x4_t& b_frag = reinterpret_cast<const bf16x4_t&>(B.x[0]);
        acc_frag = __builtin_amdgcn_mfma_f32_16x16x16bf16_1k(a_frag, b_frag, acc_frag, 0, 0, 0);
#elif defined(CDNA1)
#pragma unroll
        for (int i = 0; i < 2; ++i) {
            using bf16x2_t = __attribute__((ext_vector_type(2))) __bf16;
            const bf16x2_t& a_frag = reinterpret_cast<const bf16x2_t&>(A.x[i]);
            const bf16x2_t& b_frag = reinterpret_cast<const bf16x2_t&>(B.x[i]);
            acc_frag = __builtin_amdgcn_mfma_f32_16x16x8bf16(a_frag, b_frag, acc_frag, 0, 0, 0);
        }
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(CDNA3) || defined(CDNA2)
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(AMD_WMMA_AVAILABLE)
    }

    template <data_layout dl_d, data_layout dl_ab>
    static __device__ __forceinline__ void mma(
            tile<16, 16, int, dl_d> & D, const tile<16, 8, int, dl_ab> & A, const tile<16, 8, int, dl_ab> & B) {
#if defined(AMD_MFMA_AVAILABLE)
        using int32x4_t = __attribute__((__vector_size__(4 * sizeof(int)))) int;
        int32x4_t * acc = (int32x4_t *) D.x;
#if defined(CDNA4) || defined(CDNA3)
        acc[0] = __builtin_amdgcn_mfma_i32_16x16x32_i8(((int64_t *) A.x)[0], ((int64_t *) B.x)[0], acc[0], 0, 0, 0);
#elif defined(CDNA2) || defined(CDNA1)
        acc[0] = __builtin_amdgcn_mfma_i32_16x16x16i8(A.x[0], B.x[0], acc[0], 0, 0, 0);
        acc[0] = __builtin_amdgcn_mfma_i32_16x16x16i8(A.x[1], B.x[1], acc[0], 0, 0, 0);
#endif // defined(CDNA4) || defined(CDNA3)
#elif defined(AMD_WMMA_AVAILABLE)
        using int32x8_t = __attribute__((__vector_size__(8 * sizeof(int)))) int;
        int32x8_t * acc = (int32x8_t *) D.x;
#if defined(RDNA4)
        using int32x2_t = __attribute__((__vector_size__(2 * sizeof(int)))) int;
        int32x2_t * a_vec = (int32x2_t *) A.x;
        int32x2_t * b_vec = (int32x2_t *) B.x;
        acc[0] = __builtin_amdgcn_wmma_i32_16x16x16_iu8_w32_gfx12(true, a_vec[0], true, b_vec[0], acc[0], true);
        acc[0] = __builtin_amdgcn_wmma_i32_16x16x16_iu8_w32_gfx12(true, a_vec[1], true, b_vec[1], acc[0], true);
#elif defined(RDNA3)
        using int32x4_t = __attribute__((__vector_size__(4 * sizeof(int)))) int;
        int32x4_t * a_vec = (int32x4_t *) A.x;
        int32x4_t * b_vec = (int32x4_t *) B.x;
        acc[0] = __builtin_amdgcn_wmma_i32_16x16x16_iu8_w32(true, a_vec[0], true, b_vec[0], acc[0], true);
        acc[0] = __builtin_amdgcn_wmma_i32_16x16x16_iu8_w32(true, a_vec[1], true, b_vec[1], acc[0], true);
#endif // RDNA4
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // AMD_MFMA_AVAILABLE
    }

    static __device__ __forceinline__ void mma(
            tile<32, 32, int> & D, const tile<32, 4, int> & A, const tile<32, 4, int> & B) {
#if defined(AMD_MFMA_AVAILABLE)
        using int32x16_t = __attribute__((__vector_size__(16 * sizeof(int)))) int;
        int32x16_t * acc = (int32x16_t *) D.x;
#if defined(CDNA4) || defined(CDNA3)
        acc[0] = __builtin_amdgcn_mfma_i32_32x32x16_i8(((int64_t *) A.x)[0], ((int64_t *) B.x)[0], acc[0], 0, 0, 0);
#elif defined(CDNA2) || defined(CDNA1)
        acc[0] = __builtin_amdgcn_mfma_i32_32x32x8i8(A.x[0], B.x[0], acc[0], 0, 0, 0);
        acc[0] = __builtin_amdgcn_mfma_i32_32x32x8i8(A.x[1], B.x[1], acc[0], 0, 0, 0);
#endif // defined(CDNA4) || defined(CDNA3)

#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // AMD_MFMA_AVAILABLE
    }

    template <typename T1, typename T2, int J, int K>
    static __device__ __forceinline__ void mma(
            tile<32, J, T1> & D, const tile<32, K, T2> & A, const tile<J, K, T2> & B) {
        tile      <16, J, T1> * D16 = reinterpret_cast<      tile<16, J, T1> *>(&D);
        const tile<16, K, T2> * A16 = reinterpret_cast<const tile<16, K, T2> *>(&A);
        mma(D16[0], A16[0], B);
        mma(D16[1], A16[1], B);
    }

    static __device__ __forceinline__ void mma(
            tile<32, 8, float> & D, const tile<32, 4, half2> & A, const tile<8, 4, half2, DATA_LAYOUT_I_MAJOR_MIRRORED> & B) {
#if defined(VOLTA_MMA_AVAILABLE)
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
        asm("mma.sync.aligned.m8n8k4.row.col.f32.f16.f16.f32 "
            "{%0, %1, %2, %3, %4, %5, %6, %7}, {%8, %9}, {%10, %11}, {%0, %1, %2, %3, %4, %5, %6, %7};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3]), "+r"(Dxi[4]), "+r"(Dxi[5]), "+r"(Dxi[6]), "+r"(Dxi[7])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[0]), "r"(Bxi[1]));
        asm("mma.sync.aligned.m8n8k4.row.col.f32.f16.f16.f32 "
            "{%0, %1, %2, %3, %4, %5, %6, %7}, {%8, %9}, {%10, %11}, {%0, %1, %2, %3, %4, %5, %6, %7};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3]), "+r"(Dxi[4]), "+r"(Dxi[5]), "+r"(Dxi[6]), "+r"(Dxi[7])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[2]), "r"(Bxi[3]));
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(VOLTA_MMA_AVAILABLE)
    }

    static __device__ __forceinline__ void mma(
            tile<32, 4, half2> & D, const tile<32, 4, half2> & A, const tile<8, 4, half2, DATA_LAYOUT_J_MAJOR_MIRRORED> & B) {
#if defined(VOLTA_MMA_AVAILABLE)
        const int * Axi = (const int *) A.x;
        const int * Bxi = (const int *) B.x;
        int       * Dxi = (int       *) D.x;
        asm("mma.sync.aligned.m8n8k4.row.row.f16.f16.f16.f16 "
            "{%0, %1, %2, %3}, {%4, %5}, {%6, %7}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[0]), "r"(Axi[1]), "r"(Bxi[0]), "r"(Bxi[1]));
        asm("mma.sync.aligned.m8n8k4.row.row.f16.f16.f16.f16 "
            "{%0, %1, %2, %3}, {%4, %5}, {%6, %7}, {%0, %1, %2, %3};"
            : "+r"(Dxi[0]), "+r"(Dxi[1]), "+r"(Dxi[2]), "+r"(Dxi[3])
            : "r"(Axi[2]), "r"(Axi[3]), "r"(Bxi[2]), "r"(Bxi[3]));
#else
        GGML_UNUSED_VARS(D, A, B);
        NO_DEVICE_CODE;
#endif // defined(VOLTA_MMA_AVAILABLE)
    }

    template <data_layout dl_d, data_layout dl_ab>
    static __device__ __forceinline__ void mma(
            tile<16, 16, int, dl_d> & D, const tile<16, 4, int, dl_ab> & A, const tile<16, 4, int, dl_ab> & B) {
#if defined(AMD_MFMA_AVAILABLE)
        using int32x4_t = __attribute__((__vector_size__(4 * sizeof(int)))) int;
        int32x4_t * acc = (int32x4_t *) D.x;
#if defined(CDNA4) || defined(CDNA3)
        const int64_t xA = uint32_t(A.x[0]);
        const int64_t xB = uint32_t(B.x[0]);
        acc[0] = __builtin_amdgcn_mfma_i32_16x16x32_i8(xA, xB, acc[0], 0, 0, 0);
#elif defined(CDNA2) || defined(CDNA1)
        acc[0] = __builtin_amdgcn_mfma_i32_16x16x16i8(A.x[0], B.x[0], acc[0], 0, 0, 0);
#endif // defined(CDNA4) || defined(CDNA3)
#elif defined(AMD_WMMA_AVAILABLE)
        using int32x8_t = __attribute__((__vector_size__(8 * sizeof(int)))) int;
        int32x8_t * acc = (int32x8_t *) D.x;
#if defined(RDNA4)
        using int32x2_t = __attribute__((__vector_size__(2 * sizeof(int)))) int;
        int32x2_t * a_vec = (int32x2_t *) A.x;
        int32x2_t * b_vec = (int32x2_t *) B.x;
        acc[0] = __builtin_amdgcn_wmma_i32_16x16x16_iu8_w32_gfx12(true, a_vec[0], true, b_vec[0], acc[0], false);
#elif defined(RDNA3)
        using int32x4_t = __attribute__((__vector_size__(4 * sizeof(int)))) int;
        int32x4_t * a_vec = (int32x4_t *) A.x;
        int32x4_t * b_vec = (int32x4_t *) B.x;
        acc[0] = __builtin_amdgcn_wmma_i32_16x16x16_iu8_w32(true, a_vec[0], true, b_vec[0], acc[0], false);
#endif // RDNA4
#else
        GGML_UNUSED(D);
        GGML_UNUSED(A);
        GGML_UNUSED(B);
        NO_DEVICE_CODE;
#endif // AMD_WMMA_AVAILABLE
    }
}
