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/*
* Copyright (c) 2021-2023 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.
*/
#pragma once
#if defined(__aarch64__)
namespace {
void a64_transpose_interleave_16(uint32_t *out, const uint32_t *in, size_t width, size_t in_stride, size_t height)
{
size_t out_stride = 4 * height * sizeof(uint32_t);
__asm__ __volatile__(
"cmp %x[height], #0x4\n"
"blt 6f\n"
"1:" // Main row loop: Head
"mov x25, %x[in]\n"
"mov x24, %x[width]\n"
"mov x23, %x[out]\n"
"sub %x[height], %x[height], #0x4\n"
"add x22, x25, %x[in_stride]\n"
"add x21, x22, %x[in_stride]\n"
"add x20, x21, %x[in_stride]\n"
"cmp x24, #0x4\n"
"add %x[in], x20, %x[in_stride]\n"
"blt 3f\n"
"2:" // Main row loop: Column loop
"ldr q19, [x25], #0x10\n"
"ldr q18, [x22], #0x10\n"
"sub x24, x24, #0x4\n"
"ldr q17, [x21], #0x10\n"
"ldr q16, [x20], #0x10\n"
"cmp x24, #0x4\n"
"str q19, [x23, #0x0]\n"
"str q18, [x23, #0x10]\n"
"str q17, [x23, #0x20]\n"
"str q16, [x23, #0x30]\n"
"add x23, x23, %x[out_stride]\n"
"bge 2b\n"
"3:" // Main row loop: Column loop skip
"cbz x24, 5f\n"
"movi v16.4s, #0x0\n"
"str q16, [x23, #0x0]\n"
"str q16, [x23, #0x10]\n"
"str q16, [x23, #0x20]\n"
"str q16, [x23, #0x30]\n"
"4:" // Main row loop: width 1 loop: loop
"ldr s19, [x25], #0x4\n"
"ldr s18, [x22], #0x4\n"
"sub x24, x24, #0x1\n"
"ldr s17, [x21], #0x4\n"
"ldr s16, [x20], #0x4\n"
"cmp x24, #0x1\n"
"str s19, [x23, #0x0]\n"
"str s18, [x23, #0x10]\n"
"str s17, [x23, #0x20]\n"
"str s16, [x23, #0x30]\n"
"add x23, x23, #0x4\n"
"bge 4b\n"
"5:" // Main row loop: odd col skip
"cmp %x[height], #0x4\n"
"add %x[out], %x[out], #0x40\n"
"bge 1b\n"
"cbz %x[height], 12f\n"
"6:" // Main loop skip
"7:" // Tail row loop: Head
"mov x20, %x[width]\n"
"mov x25, %x[in]\n"
"mov x23, %x[out]\n"
"sub %x[height], %x[height], #0x1\n"
"cmp x20, #0x4\n"
"add %x[in], x25, %x[in_stride]\n"
"blt 9f\n"
"8:" // Tail row loop: Column loop
"ldr q16, [x25], #0x10\n"
"sub x20, x20, #0x4\n"
"cmp x20, #0x4\n"
"str q16, [x23, #0x0]\n"
"add x23, x23, %x[out_stride]\n"
"bge 8b\n"
"9:" // Tail row loop: Column loop skip
"cbz x20, 11f\n"
"movi v16.4s, #0x0\n"
"str q16, [x23, #0x0]\n"
"10:" // Tail row loop: width 1 loop: loop
"ldr s16, [x25], #0x4\n"
"sub x20, x20, #0x1\n"
"cmp x20, #0x1\n"
"str s16, [x23, #0x0]\n"
"add x23, x23, #0x4\n"
"bge 10b\n"
"11:" // Tail row loop: odd col skip
"cmp %x[height], #0x1\n"
"add %x[out], %x[out], #0x10\n"
"bge 7b\n"
"12:" // Done
: [height] "+&r" (height), [in] "+&r" (in), [out] "+&r" (out)
: [in_stride] "r" (in_stride), [out_stride] "r" (out_stride), [width] "r" (width)
: "cc", "memory", "v16", "v17", "v18", "v19", "x20", "x21", "x22", "x23", "x24", "x25"
);
}
} // anonymous namespace
template<>
void Transform<4, 1, true, VLType::None>(
float *out, const float *in, int stride, int x0, int xmax, int k0, int kmax)
{
a64_transpose_interleave_16(
reinterpret_cast<uint32_t *>(out),
reinterpret_cast<const uint32_t *>(in + k0 * stride + x0),
(xmax-x0) * sizeof(float) / 4,
stride * sizeof(float),
(kmax-k0)
);
}
#endif // defined(__aarch64__)
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