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Diffstat (limited to 'third_party/aom/aom_dsp/arm/aom_neon_sve2_bridge.h')
-rw-r--r-- | third_party/aom/aom_dsp/arm/aom_neon_sve2_bridge.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/arm/aom_neon_sve2_bridge.h b/third_party/aom/aom_dsp/arm/aom_neon_sve2_bridge.h new file mode 100644 index 0000000000..6e7d2d6365 --- /dev/null +++ b/third_party/aom/aom_dsp/arm/aom_neon_sve2_bridge.h @@ -0,0 +1,36 @@ +/* + * 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_ |