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/*
* Copyright (c) 2017 The WebM project authors. 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 VPX_VPX_DSP_ARM_SUM_NEON_H_
#define VPX_VPX_DSP_ARM_SUM_NEON_H_
#include <arm_neon.h>
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
static INLINE int32_t horizontal_add_int16x8(const int16x8_t a) {
#if defined(__aarch64__)
return vaddlvq_s16(a);
#else
const int32x4_t b = vpaddlq_s16(a);
const int64x2_t c = vpaddlq_s32(b);
const int32x2_t d = vadd_s32(vreinterpret_s32_s64(vget_low_s64(c)),
vreinterpret_s32_s64(vget_high_s64(c)));
return vget_lane_s32(d, 0);
#endif
}
static INLINE uint32_t horizontal_add_uint16x8(const uint16x8_t a) {
#if defined(__aarch64__)
return vaddlvq_u16(a);
#else
const uint32x4_t b = vpaddlq_u16(a);
const uint64x2_t c = vpaddlq_u32(b);
const uint32x2_t d = vadd_u32(vreinterpret_u32_u64(vget_low_u64(c)),
vreinterpret_u32_u64(vget_high_u64(c)));
return vget_lane_u32(d, 0);
#endif
}
static INLINE int32_t horizontal_add_int32x2(const int32x2_t a) {
#if defined(__aarch64__)
return vaddv_s32(a);
#else
return vget_lane_s32(a, 0) + vget_lane_s32(a, 1);
#endif
}
static INLINE uint32_t horizontal_add_uint32x2(const uint32x2_t a) {
#if defined(__aarch64__)
return vaddv_u32(a);
#else
return vget_lane_u32(a, 0) + vget_lane_u32(a, 1);
#endif
}
static INLINE int32_t horizontal_add_int32x4(const int32x4_t a) {
#if defined(__aarch64__)
return vaddvq_s32(a);
#else
const int64x2_t b = vpaddlq_s32(a);
const int32x2_t c = vadd_s32(vreinterpret_s32_s64(vget_low_s64(b)),
vreinterpret_s32_s64(vget_high_s64(b)));
return vget_lane_s32(c, 0);
#endif
}
static INLINE uint32_t horizontal_add_uint32x4(const uint32x4_t a) {
#if defined(__aarch64__)
return vaddvq_u32(a);
#else
const uint64x2_t b = vpaddlq_u32(a);
const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
vreinterpret_u32_u64(vget_high_u64(b)));
return vget_lane_u32(c, 0);
#endif
}
#endif // VPX_VPX_DSP_ARM_SUM_NEON_H_
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