| /* |
| * Copyright (c) 2017-2018 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__ |
| |
| #include <arm_neon.h> |
| |
| #include "../asmlib.hpp" |
| |
| template<> |
| template<typename T> |
| inline void TransformImpl<6, 1, false, 4, 4, false>::Transform(T *out, const T *in, int ldin, int y0, int ymax, int k0, int kmax) { |
| uint32_t *outptr = reinterpret_cast<uint32_t *>(out); |
| const uint32_t *inptr = reinterpret_cast<const uint32_t *>(in); |
| |
| uint32_t zerobuff[16] = { 0 }; // 8 for asm loop plus up to 7 for overflow loop |
| |
| for (int y=y0; y<ymax; y+=6) { |
| const uint32_t *inptr0 = inptr + y * ldin + k0; |
| const uint32_t *inptr1 = inptr0 + ldin; |
| const uint32_t *inptr2 = inptr1 + ldin; |
| const uint32_t *inptr3 = inptr2 + ldin; |
| const uint32_t *inptr4 = inptr3 + ldin; |
| const uint32_t *inptr5 = inptr4 + ldin; |
| |
| //prefetch_2x(inptr0); |
| //prefetch_2x(inptr1); |
| //prefetch_2x(inptr2); |
| //prefetch_2x(inptr3); |
| //prefetch_2x(inptr4); |
| //prefetch_2x(inptr5); |
| |
| int x=(kmax-k0); |
| for (;x>7;x-=8) { |
| /* Cope with ragged cases by copying from a buffer of zeroes instead */ |
| if ((y + 5) >= ymax) { |
| switch ((y + 5) - ymax) { |
| /* Everything falls through in here */ |
| case 4: |
| inptr1 = zerobuff; |
| case 3: |
| inptr2 = zerobuff; |
| case 2: |
| inptr3 = zerobuff; |
| case 1: |
| inptr4 = zerobuff; |
| case 0: |
| inptr5 = zerobuff; |
| break; |
| |
| default: |
| UNREACHABLE("Impossible."); |
| } |
| } |
| |
| |
| __asm __volatile ( |
| // Load up 8 elements (2 vectors) from each of 8 sources. |
| "VLD1.32 {d0-d3}, [%[inptr0]]!\n" // q0=A0A1A2A3 |
| "VLD1.32 {d4-d7}, [%[inptr1]]!\n" // q2=B0B1B2B3 |
| "VLD1.32 {d8-d11}, [%[inptr2]]!\n" // q4=C0C1C2C3 |
| "VZIP.32 q0, q4\n" // q0=A0C0A1C1, q4 = A2C2A3C3 |
| "VLD1.32 {d12-d15}, [%[inptr3]]!\n" // q6=D0D1D2D3 |
| "VZIP.32 q2, q6\n" // q2=B0D0B1D1, q6 = B2D2B3D3 |
| "VLD1.32 {d16-d19}, [%[inptr4]]!\n" |
| "VLD1.32 {d20-d23}, [%[inptr5]]!\n" |
| "VZIP.32 q8, q10\n" // q8=E0F0E1F1, q10 = E2F2E3F3 |
| ASM_PREFETCH("[%[inptr0], #128]") |
| "VZIP.32 q0, q2\n" // q0 = A0B0C0D0, q2 = A1B1C1D1 |
| |
| // Store first elements |
| "VST1.32 {d0-d1}, [%[outptr]]!\n" |
| "VST1.32 {d16}, [%[outptr]]!\n" |
| |
| "VZIP.32 q4, q6\n" // q4 = A2B2C2D2, q6 = A3B3C3D3 |
| |
| // Store second elements |
| "VST1.32 {d4-d5}, [%[outptr]]!\n" |
| "VZIP.32 q1, q5\n" |
| ASM_PREFETCH("[%[inptr1], #128]") |
| "VST1.32 {d17}, [%[outptr]]!\n" |
| "VZIP.32 q3, q7\n" |
| |
| // Store third elements |
| "VZIP.32 q9, q11\n" |
| "VST1.32 {d8-d9}, [%[outptr]]!\n" |
| "VZIP.32 q1, q3\n" |
| ASM_PREFETCH("[%[inptr2], #128]") |
| "VST1.32 {d20}, [%[outptr]]!\n" |
| |
| // Store fourth elements |
| "VZIP.32 q5, q7\n" |
| "VST1.32 {d12-d13}, [%[outptr]]!\n" |
| ASM_PREFETCH("[%[inptr3], #128]") |
| "VST1.32 {d21}, [%[outptr]]!\n" |
| |
| // Fifth |
| "VST1.32 {d2-d3}, [%[outptr]]!\n" |
| ASM_PREFETCH("[%[inptr4], #128]") |
| "VST1.32 {d18}, [%[outptr]]!\n" |
| |
| // Sixth |
| "VST1.32 {d6-d7}, [%[outptr]]!\n" |
| ASM_PREFETCH("[%[inptr5], #128]") |
| "VST1.32 {d19}, [%[outptr]]!\n" |
| |
| // Seventh |
| "VST1.32 {d10-d11}, [%[outptr]]!\n" |
| "VST1.32 {d22}, [%[outptr]]!\n" |
| |
| // Eighth |
| "VST1.32 {d14-d15}, [%[outptr]]!\n" |
| "VST1.32 {d23}, [%[outptr]]!\n" |
| |
| : [inptr0] "+r" (inptr0), [inptr1] "+r" (inptr1), [inptr2] "+r" (inptr2), [inptr3] "+r" (inptr3), |
| [inptr4] "+r" (inptr4), [inptr5] "+r" (inptr5), [outptr] "+r" (outptr) |
| : |
| : "q0", "q1", "q2", "q3", "q4", "q5", "q6", "q7", "q8", "q9", "q10", "q11", "q12", "memory" |
| ); |
| } |
| |
| for (;x>0;x--) { |
| *outptr++ = *inptr0++; |
| *outptr++ = *inptr1++; |
| *outptr++ = *inptr2++; |
| *outptr++ = *inptr3++; |
| *outptr++ = *inptr4++; |
| *outptr++ = *inptr5++; |
| } |
| } |
| } |
| |
| #endif // __arm__ |