/*
 * Copyright (c) 2019-2021, 2023-2024 Arm Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * 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.
 */

#ifdef __aarch64__

template<>
void interleave_block<8, 1, VLType::None, false>(
  float * &out_ptr, const __fp16 * const * in, size_t width, size_t height,
  size_t row_offset, bool
)
{
  __asm__ __volatile__(
      "ldr x28, [%x[in], #0x0]\n"
      "ldr x27, [%x[in], #0x8]\n"
      "cmp %x[height], #0x8\n"
      "ldr x26, [%x[in], #0x10]\n"
      "ldr x25, [%x[in], #0x18]\n"
      "ldr x24, [%x[in], #0x20]\n"
      "ldr x23, [%x[in], #0x28]\n"
      "ldr x22, [%x[in], #0x30]\n"
      "ldr x21, [%x[in], #0x38]\n"
      "add x28, x28, %x[row_offset], LSL #1\n"
      "add x27, x27, %x[row_offset], LSL #1\n"
      "add x26, x26, %x[row_offset], LSL #1\n"
      "add x25, x25, %x[row_offset], LSL #1\n"
      "add x24, x24, %x[row_offset], LSL #1\n"
      "add x23, x23, %x[row_offset], LSL #1\n"
      "add x22, x22, %x[row_offset], LSL #1\n"
      "add x21, x21, %x[row_offset], LSL #1\n"
      "beq 1f\n"
      "cmp %x[height], #0x2\n"
      "mov x21, x28\n"
      "csel x27, x27, x28, GE\n"
      "csel x26, x26, x28, GT\n"
      "cmp %x[height], #0x4\n"
      "csel x25, x25, x28, GE\n"
      "csel x24, x24, x28, GT\n"
      "cmp %x[height], #0x6\n"
      "csel x23, x23, x28, GE\n"
      "csel x22, x22, x28, GT\n"
      "1:"  // no_pointer_adj
      "cmp %x[width], #0x4\n"
      "prfm pldl1keep, [x28, #0x0]\n"
      "prfm pldl1keep, [x27, #0x0]\n"
      "prfm pldl1keep, [x26, #0x0]\n"
      "prfm pldl1keep, [x25, #0x0]\n"
      "prfm pldl1keep, [x24, #0x0]\n"
      "prfm pldl1keep, [x23, #0x0]\n"
      "prfm pldl1keep, [x22, #0x0]\n"
      "prfm pldl1keep, [x21, #0x0]\n"
      "prfm pldl1keep, [x28, #0x40]\n"
      "prfm pldl1keep, [x27, #0x40]\n"
      "prfm pldl1keep, [x26, #0x40]\n"
      "prfm pldl1keep, [x25, #0x40]\n"
      "prfm pldl1keep, [x24, #0x40]\n"
      "prfm pldl1keep, [x23, #0x40]\n"
      "prfm pldl1keep, [x22, #0x40]\n"
      "prfm pldl1keep, [x21, #0x40]\n"
      "blt 3f\n"
      "2:"  // Main loop head
      "ldr d25, [x28], #0x8\n"
      "ldr d24, [x27], #0x8\n"
      "subs %x[width], %x[width], #0x4\n"
      "ldr d18, [x26], #0x8\n"
      "ldr d17, [x25], #0x8\n"
      "cmp %x[width], #0x4\n"
      "ldr d23, [x24], #0x8\n"
      "ldr d22, [x23], #0x8\n"
      "ldr d21, [x22], #0x8\n"
      "ldr d16, [x21], #0x8\n"
      "fcvtl v25.4s, v25.4h\n"
      "fcvtl v24.4s, v24.4h\n"
      "fcvtl v18.4s, v18.4h\n"
      "fcvtl v17.4s, v17.4h\n"
      "prfm pldl1keep, [x28, #0x70]\n"
      "prfm pldl1keep, [x27, #0x70]\n"
      "fcvtl v23.4s, v23.4h\n"
      "fcvtl v22.4s, v22.4h\n"
      "prfm pldl1keep, [x26, #0x70]\n"
      "prfm pldl1keep, [x25, #0x70]\n"
      "fcvtl v21.4s, v21.4h\n"
      "fcvtl v16.4s, v16.4h\n"
      "prfm pldl1keep, [x24, #0x70]\n"
      "prfm pldl1keep, [x23, #0x70]\n"
      "zip1 v20.4s, v25.4s, v18.4s\n"
      "zip1 v19.4s, v24.4s, v17.4s\n"
      "prfm pldl1keep, [x22, #0x70]\n"
      "prfm pldl1keep, [x21, #0x70]\n"
      "zip2 v26.4s, v25.4s, v18.4s\n"
      "zip2 v25.4s, v24.4s, v17.4s\n"
      "zip1 v18.4s, v23.4s, v21.4s\n"
      "zip1 v17.4s, v22.4s, v16.4s\n"
      "zip2 v24.4s, v23.4s, v21.4s\n"
      "zip2 v23.4s, v22.4s, v16.4s\n"
      "zip1 v16.4s, v20.4s, v19.4s\n"
      "zip2 v22.4s, v20.4s, v19.4s\n"
      "zip1 v21.4s, v18.4s, v17.4s\n"
      "zip2 v20.4s, v18.4s, v17.4s\n"
      "zip1 v19.4s, v26.4s, v25.4s\n"
      "zip1 v18.4s, v24.4s, v23.4s\n"
      "str q16, [%x[out_ptr], #0x0]\n"
      "zip2 v17.4s, v26.4s, v25.4s\n"
      "zip2 v16.4s, v24.4s, v23.4s\n"
      "str q21, [%x[out_ptr], #0x10]\n"
      "str q22, [%x[out_ptr], #0x20]\n"
      "str q20, [%x[out_ptr], #0x30]\n"
      "str q19, [%x[out_ptr], #0x40]\n"
      "str q18, [%x[out_ptr], #0x50]\n"
      "str q17, [%x[out_ptr], #0x60]\n"
      "str q16, [%x[out_ptr], #0x70]\n"
      "add %x[out_ptr], %x[out_ptr], #0x80\n"
      "bge 2b\n"
      "3:"  // Main loop skip
      "cbz %x[width], 6f\n"
      "tbz %x[width], #1, 4f\n"
      "ldr s29, [x28], #0x4\n"
      "ldr s28, [x27], #0x4\n"
      "mov x20, #0x2\n"
      "ldr s27, [x26], #0x4\n"
      "ldr s26, [x25], #0x4\n"
      "ldr s25, [x24], #0x4\n"
      "ldr s24, [x23], #0x4\n"
      "ldr s23, [x22], #0x4\n"
      "ldr s22, [x21], #0x4\n"
      "tbz %x[width], #0, 5f\n"
      "ld1 { v29.h }[2], [x28]\n"
      "ld1 { v28.h }[2], [x27]\n"
      "mov x20, #0x3\n"
      "ld1 { v27.h }[2], [x26]\n"
      "ld1 { v26.h }[2], [x25]\n"
      "ld1 { v25.h }[2], [x24]\n"
      "ld1 { v24.h }[2], [x23]\n"
      "ld1 { v23.h }[2], [x22]\n"
      "ld1 { v22.h }[2], [x21]\n"
      "b 5f\n"
      "4:"  // odd_loads_1_0
      "ldr h29, [x28, #0x0]\n"
      "ldr h28, [x27, #0x0]\n"
      "mov x20, #0x1\n"
      "ldr h27, [x26, #0x0]\n"
      "ldr h26, [x25, #0x0]\n"
      "ldr h25, [x24, #0x0]\n"
      "ldr h24, [x23, #0x0]\n"
      "ldr h23, [x22, #0x0]\n"
      "ldr h22, [x21, #0x0]\n"
      "5:"  // Odd load end
      "fcvtl v29.4s, v29.4h\n"
      "fcvtl v28.4s, v28.4h\n"
      "subs x20, x20, #0x1\n"
      "fcvtl v27.4s, v27.4h\n"
      "fcvtl v26.4s, v26.4h\n"
      "fcvtl v25.4s, v25.4h\n"
      "fcvtl v24.4s, v24.4h\n"
      "fcvtl v23.4s, v23.4h\n"
      "fcvtl v22.4s, v22.4h\n"
      "zip1 v21.4s, v29.4s, v27.4s\n"
      "zip1 v20.4s, v28.4s, v26.4s\n"
      "zip1 v19.4s, v25.4s, v23.4s\n"
      "zip1 v18.4s, v24.4s, v22.4s\n"
      "zip1 v17.4s, v21.4s, v20.4s\n"
      "zip1 v16.4s, v19.4s, v18.4s\n"
      "str q17, [%x[out_ptr], #0x0]\n"
      "str q16, [%x[out_ptr], #0x10]\n"
      "add %x[out_ptr], %x[out_ptr], #0x20\n"
      "beq 6f\n"
      "subs x20, x20, #0x1\n"
      "zip2 v17.4s, v21.4s, v20.4s\n"
      "zip2 v16.4s, v19.4s, v18.4s\n"
      "str q17, [%x[out_ptr], #0x0]\n"
      "str q16, [%x[out_ptr], #0x10]\n"
      "add %x[out_ptr], %x[out_ptr], #0x20\n"
      "beq 6f\n"
      "zip2 v19.4s, v29.4s, v27.4s\n"
      "zip2 v17.4s, v28.4s, v26.4s\n"
      "zip2 v18.4s, v25.4s, v23.4s\n"
      "zip2 v16.4s, v24.4s, v22.4s\n"
      "zip1 v17.4s, v19.4s, v17.4s\n"
      "zip1 v16.4s, v18.4s, v16.4s\n"
      "str q17, [%x[out_ptr], #0x0]\n"
      "str q16, [%x[out_ptr], #0x10]\n"
      "add %x[out_ptr], %x[out_ptr], #0x20\n"
      "6:"  // Odds skip
      : [out_ptr] "+&r" (out_ptr), [width] "+&r" (width)
      : [height] "r" (height), [in] "r" (in), [row_offset] "r" (row_offset)
      : "cc", "memory", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "x20", "x21", "x22", "x23", "x24", "x25", "x26", "x27", "x28"
    );
}


#endif // __aarch64__
