| /* |
| * Copyright (c) 2024, Alliance for Open Media. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef AOM_AOM_DSP_ARM_AOM_NEON_SVE2_BRIDGE_H_ |
| #define AOM_AOM_DSP_ARM_AOM_NEON_SVE2_BRIDGE_H_ |
| |
| #include <arm_neon_sve_bridge.h> |
| |
| #include "config/aom_dsp_rtcd.h" |
| #include "config/aom_config.h" |
| |
| // We can access instructions exclusive to the SVE2 instruction set from a |
| // predominantly Neon context by making use of the Neon-SVE bridge intrinsics |
| // to reinterpret Neon vectors as SVE vectors - with the high part of the SVE |
| // vector (if it's longer than 128 bits) being "don't care". |
| |
| // While sub-optimal on machines that have SVE vector length > 128-bit - as the |
| // remainder of the vector is unused - this approach is still beneficial when |
| // compared to a Neon-only solution. |
| |
| static INLINE int16x8_t aom_tbl2_s16(int16x8_t s0, int16x8_t s1, |
| uint16x8_t tbl) { |
| svint16x2_t samples = svcreate2_s16(svset_neonq_s16(svundef_s16(), s0), |
| svset_neonq_s16(svundef_s16(), s1)); |
| return svget_neonq_s16( |
| svtbl2_s16(samples, svset_neonq_u16(svundef_u16(), tbl))); |
| } |
| |
| #endif // AOM_AOM_DSP_ARM_AOM_NEON_SVE2_BRIDGE_H_ |