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/*
* Copyright (c) 2021 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
#ifdef __ARM_FEATURE_SVE
namespace {
void sve_transpose_interleave_1VL(uint32_t *out, const uint32_t *in, size_t width, size_t in_stride, size_t height)
{
size_t out_stride = 1 * height * get_vector_length<uint8_t>();
__asm__ __volatile__(
"ptrue p1.b\n"
"cmp %x[height], #0x4\n"
"blt 6f\n"
"1:" // Main row loop: Head
"mov x25, %x[in]\n"
"mov x24, %x[out]\n"
"add x23, x25, %x[in_stride]\n"
"add x22, x23, %x[in_stride]\n"
"add x21, x22, %x[in_stride]\n"
"add %x[in], x21, %x[in_stride]\n"
"sub %x[height], %x[height], #0x4\n"
"mov x20, %x[width]\n"
"cntw x19, ALL, MUL #2\n"
"cmp x20, x19\n"
"blt 3f\n"
"2:" // Main row loop: Unroll column loop
"ld1w { z23.s }, p1/Z, [x25]\n"
"sub x20, x20, x19\n"
"ld1w { z22.s }, p1/Z, [x25, #1, MUL VL]\n"
"addvl x25, x25, #2\n"
"ld1w { z21.s }, p1/Z, [x23]\n"
"cmp x20, x19\n"
"ld1w { z20.s }, p1/Z, [x23, #1, MUL VL]\n"
"addvl x23, x23, #2\n"
"ld1w { z19.s }, p1/Z, [x22]\n"
"ld1w { z18.s }, p1/Z, [x22, #1, MUL VL]\n"
"addvl x22, x22, #2\n"
"ld1w { z17.s }, p1/Z, [x21]\n"
"ld1w { z16.s }, p1/Z, [x21, #1, MUL VL]\n"
"addvl x21, x21, #2\n"
"st1w { z23.s }, p1, [x24]\n"
"st1w { z21.s }, p1, [x24, #1, MUL VL]\n"
"st1w { z19.s }, p1, [x24, #2, MUL VL]\n"
"st1w { z17.s }, p1, [x24, #3, MUL VL]\n"
"add x24, x24, %x[out_stride]\n"
"st1w { z22.s }, p1, [x24]\n"
"st1w { z20.s }, p1, [x24, #1, MUL VL]\n"
"st1w { z18.s }, p1, [x24, #2, MUL VL]\n"
"st1w { z16.s }, p1, [x24, #3, MUL VL]\n"
"add x24, x24, %x[out_stride]\n"
"bge 2b\n"
"3:" // Main row loop: Unroll column loop skip
"cbz x20, 5f\n"
"4:" // Main row loop: Column loop
"whilelt p0.s, XZR, x20\n"
"ld1w { z19.s }, p0/Z, [x25]\n"
"addvl x25, x25, #1\n"
"ld1w { z18.s }, p0/Z, [x23]\n"
"addvl x23, x23, #1\n"
"ld1w { z17.s }, p0/Z, [x22]\n"
"addvl x22, x22, #1\n"
"ld1w { z16.s }, p0/Z, [x21]\n"
"addvl x21, x21, #1\n"
"st1w { z19.s }, p1, [x24]\n"
"decw x20\n"
"st1w { z18.s }, p1, [x24, #1, MUL VL]\n"
"cmp x20, #0x0\n"
"st1w { z17.s }, p1, [x24, #2, MUL VL]\n"
"st1w { z16.s }, p1, [x24, #3, MUL VL]\n"
"add x24, x24, %x[out_stride]\n"
"bgt 4b\n"
"5:" // Main row loop: Column loop skip
"addvl %x[out], %x[out], #4\n"
"cmp %x[height], #0x4\n"
"bge 1b\n"
"cbz %x[height], 12f\n"
"6:" // Main loop skip
"7:" // Tail row loop: Head
"mov x25, %x[in]\n"
"mov x24, %x[out]\n"
"add %x[in], x25, %x[in_stride]\n"
"sub %x[height], %x[height], #0x1\n"
"mov x20, %x[width]\n"
"cntw x19, ALL, MUL #2\n"
"cmp x20, x19\n"
"blt 9f\n"
"8:" // Tail row loop: Unroll column loop
"ld1w { z17.s }, p1/Z, [x25]\n"
"sub x20, x20, x19\n"
"ld1w { z16.s }, p1/Z, [x25, #1, MUL VL]\n"
"addvl x25, x25, #2\n"
"cmp x20, x19\n"
"st1w { z17.s }, p1, [x24]\n"
"add x24, x24, %x[out_stride]\n"
"st1w { z16.s }, p1, [x24]\n"
"add x24, x24, %x[out_stride]\n"
"bge 8b\n"
"9:" // Tail row loop: Unroll column loop skip
"cbz x20, 11f\n"
"10:" // Tail row loop: Column loop
"whilelt p0.s, XZR, x20\n"
"ld1w { z16.s }, p0/Z, [x25]\n"
"addvl x25, x25, #1\n"
"decw x20\n"
"st1w { z16.s }, p1, [x24]\n"
"add x24, x24, %x[out_stride]\n"
"cmp x20, #0x0\n"
"bgt 10b\n"
"11:" // Tail row loop: Column loop skip
"addvl %x[out], %x[out], #1\n"
"cmp %x[height], #0x1\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", "p0", "p1", "x19", "x20", "x21", "x22", "x23", "x24", "x25", "z16", "z17", "z18", "z19", "z20", "z21", "z22", "z23"
);
}
} // anonymous namespace
template<>
void Transform<1, 1, true, VLType::SVE>(
float *out, const float *in, int stride, int x0, int xmax, int k0, int kmax)
{
sve_transpose_interleave_1VL(
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
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