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neon: consolidate horizontal adds

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Change-Id: Iaf9e88ff636ccf8f0ef310869c6827f3f205cca8
This commit is contained in:
Johann 2017-07-07 10:37:30 -07:00
parent 4b78c6e6f7
commit 87610ac45e
6 changed files with 78 additions and 74 deletions
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18
vpx_dsp/arm/avg_neon.c
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@ -17,14 +17,7 @@
#include "vpx/vpx_integer.h"
#include "vpx_dsp/arm/idct_neon.h"
#include "vpx_dsp/arm/mem_neon.h"
static INLINE unsigned int horizontal_add_u16x8(const uint16x8_t v_16x8) {
const uint32x4_t a = vpaddlq_u16(v_16x8);
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);
}
#include "vpx_dsp/arm/sum_neon.h"
unsigned int vpx_avg_4x4_neon(const uint8_t *s, int p) {
uint16x8_t v_sum;
@ -35,7 +28,7 @@ unsigned int vpx_avg_4x4_neon(const uint8_t *s, int p) {
v_s1 = vld1_lane_u32((const uint32_t *)(s + 2 * p), v_s1, 0);
v_s1 = vld1_lane_u32((const uint32_t *)(s + 3 * p), v_s1, 1);
v_sum = vaddl_u8(vreinterpret_u8_u32(v_s0), vreinterpret_u8_u32(v_s1));
return (horizontal_add_u16x8(v_sum) + 8) >> 4;
return (vget_lane_u32(horizontal_add_uint16x8(v_sum), 0) + 8) >> 4;
}
unsigned int vpx_avg_8x8_neon(const uint8_t *s, int p) {
@ -61,7 +54,7 @@ unsigned int vpx_avg_8x8_neon(const uint8_t *s, int p) {
v_s0 = vld1_u8(s + 7 * p);
v_sum = vaddw_u8(v_sum, v_s0);
return (horizontal_add_u16x8(v_sum) + 32) >> 6;
return (vget_lane_u32(horizontal_add_uint16x8(v_sum), 0) + 32) >> 6;
}
// coeff: 16 bits, dynamic range [-32640, 32640].
@ -155,7 +148,8 @@ int16_t vpx_int_pro_col_neon(uint8_t const *ref, const int width) {
ref += 16;
}
return horizontal_add_u16x8(vec_sum);
return vget_lane_s16(vreinterpret_s16_u32(horizontal_add_uint16x8(vec_sum)),
0);
}
// ref, src = [0, 510] - max diff = 16-bits
@ -185,7 +179,7 @@ int vpx_vector_var_neon(int16_t const *ref, int16_t const *src, const int bwl) {
{
// Note: 'total''s pairwise addition could be implemented similarly to
// horizontal_add_u16x8(), but one less vpaddl with 'total' when paired
// horizontal_add_uint16x8(), but one less vpaddl with 'total' when paired
// with the summation of 'sse' performed better on a Cortex-A15.
const int32x4_t t0 = vpaddlq_s16(total); // cascading summation of 'total'
const int32x2_t t1 = vadd_s32(vget_low_s32(t0), vget_high_s32(t0));

20
vpx_dsp/arm/fdct_partial_neon.c
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@ -13,13 +13,7 @@
#include "./vpx_dsp_rtcd.h"
#include "./vpx_config.h"
#include "vpx_dsp/arm/mem_neon.h"
static INLINE int32x2_t sum_int16x8(const int16x8_t a) {
const int32x4_t b = vpaddlq_s16(a);
const int64x2_t c = vpaddlq_s32(b);
return vadd_s32(vreinterpret_s32_s64(vget_low_s64(c)),
vreinterpret_s32_s64(vget_high_s64(c)));
}
#include "vpx_dsp/arm/sum_neon.h"
static INLINE tran_low_t get_lane(const int32x2_t a) {
#if CONFIG_VP9_HIGHBITDEPTH
@ -48,7 +42,7 @@ void vpx_fdct4x4_1_neon(const int16_t *input, tran_low_t *output, int stride) {
c = vaddq_s16(b0, b1);
d = sum_int16x8(c);
d = horizontal_add_int16x8(c);
output[0] = get_lane(vshl_n_s32(d, 1));
output[1] = 0;
@ -63,7 +57,7 @@ void vpx_fdct8x8_1_neon(const int16_t *input, tran_low_t *output, int stride) {
sum = vaddq_s16(sum, input_00);
}
output[0] = get_lane(sum_int16x8(sum));
output[0] = get_lane(horizontal_add_int16x8(sum));
output[1] = 0;
}
@ -83,7 +77,7 @@ void vpx_fdct16x16_1_neon(const int16_t *input, tran_low_t *output,
right = vaddq_s16(right, b);
}
sum = vadd_s32(sum_int16x8(left), sum_int16x8(right));
sum = vadd_s32(horizontal_add_int16x8(left), horizontal_add_int16x8(right));
output[0] = get_lane(vshr_n_s32(sum, 1));
output[1] = 0;
@ -111,9 +105,9 @@ void vpx_fdct32x32_1_neon(const int16_t *input, tran_low_t *output,
a3 = vaddq_s16(a3, b3);
}
sum = vadd_s32(sum_int16x8(a0), sum_int16x8(a1));
sum = vadd_s32(sum, sum_int16x8(a2));
sum = vadd_s32(sum, sum_int16x8(a3));
sum = vadd_s32(horizontal_add_int16x8(a0), horizontal_add_int16x8(a1));
sum = vadd_s32(sum, horizontal_add_int16x8(a2));
sum = vadd_s32(sum, horizontal_add_int16x8(a3));
output[0] = get_lane(vshr_n_s32(sum, 3));
output[1] = 0;
}

41
vpx_dsp/arm/sad_neon.c
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@ -14,15 +14,7 @@
#include "vpx/vpx_integer.h"
#include "vpx_dsp/arm/mem_neon.h"
// TODO(johannkoenig): combine with avg_neon.h version.
static INLINE uint32_t horizontal_add_16x8(const uint16x8_t vec_16x8) {
const uint32x4_t a = vpaddlq_u16(vec_16x8);
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);
}
#include "vpx_dsp/arm/sum_neon.h"
uint32_t vpx_sad4x4_neon(const uint8_t *src_ptr, int src_stride,
const uint8_t *ref_ptr, int ref_stride) {
@ -30,7 +22,7 @@ uint32_t vpx_sad4x4_neon(const uint8_t *src_ptr, int src_stride,
const uint8x16_t ref_u8 = load_unaligned_u8q(ref_ptr, ref_stride);
uint16x8_t abs = vabdl_u8(vget_low_u8(src_u8), vget_low_u8(ref_u8));
abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(ref_u8));
return horizontal_add_16x8(abs);
return vget_lane_u32(horizontal_add_uint16x8(abs), 0);
}
uint32_t vpx_sad4x4_avg_neon(const uint8_t *src_ptr, int src_stride,
@ -42,7 +34,7 @@ uint32_t vpx_sad4x4_avg_neon(const uint8_t *src_ptr, int src_stride,
const uint8x16_t avg = vrhaddq_u8(ref_u8, second_pred_u8);
uint16x8_t abs = vabdl_u8(vget_low_u8(src_u8), vget_low_u8(avg));
abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(avg));
return horizontal_add_16x8(abs);
return vget_lane_u32(horizontal_add_uint16x8(abs), 0);
}
uint32_t vpx_sad4x8_neon(const uint8_t *src_ptr, int src_stride,
@ -58,7 +50,7 @@ uint32_t vpx_sad4x8_neon(const uint8_t *src_ptr, int src_stride,
abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(ref_u8));
}
return horizontal_add_16x8(abs);
return vget_lane_u32(horizontal_add_uint16x8(abs), 0);
}
uint32_t vpx_sad4x8_avg_neon(const uint8_t *src_ptr, int src_stride,
@ -78,7 +70,7 @@ uint32_t vpx_sad4x8_avg_neon(const uint8_t *src_ptr, int src_stride,
abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(avg));
}
return horizontal_add_16x8(abs);
return vget_lane_u32(horizontal_add_uint16x8(abs), 0);
}
static INLINE uint16x8_t sad8x(const uint8_t *a, int a_stride, const uint8_t *b,
@ -119,7 +111,7 @@ static INLINE uint16x8_t sad8x_avg(const uint8_t *a, int a_stride,
uint32_t vpx_sad8x##n##_neon(const uint8_t *src, int src_stride, \
const uint8_t *ref, int ref_stride) { \
const uint16x8_t abs = sad8x(src, src_stride, ref, ref_stride, n); \
return horizontal_add_16x8(abs); \
return vget_lane_u32(horizontal_add_uint16x8(abs), 0); \
} \
\
uint32_t vpx_sad8x##n##_avg_neon(const uint8_t *src, int src_stride, \
@ -127,7 +119,7 @@ static INLINE uint16x8_t sad8x_avg(const uint8_t *a, int a_stride,
const uint8_t *second_pred) { \
const uint16x8_t abs = \
sad8x_avg(src, src_stride, ref, ref_stride, second_pred, n); \
return horizontal_add_16x8(abs); \
return vget_lane_u32(horizontal_add_uint16x8(abs), 0); \
}
sad8xN(4);
@ -175,7 +167,7 @@ static INLINE uint16x8_t sad16x_avg(const uint8_t *a, int a_stride,
uint32_t vpx_sad16x##n##_neon(const uint8_t *src, int src_stride, \
const uint8_t *ref, int ref_stride) { \
const uint16x8_t abs = sad16x(src, src_stride, ref, ref_stride, n); \
return horizontal_add_16x8(abs); \
return vget_lane_u32(horizontal_add_uint16x8(abs), 0); \
} \
\
uint32_t vpx_sad16x##n##_avg_neon(const uint8_t *src, int src_stride, \
@ -183,7 +175,7 @@ static INLINE uint16x8_t sad16x_avg(const uint8_t *a, int a_stride,
const uint8_t *second_pred) { \
const uint16x8_t abs = \
sad16x_avg(src, src_stride, ref, ref_stride, second_pred, n); \
return horizontal_add_16x8(abs); \
return vget_lane_u32(horizontal_add_uint16x8(abs), 0); \
}
sad16xN(8);
@ -241,7 +233,7 @@ static INLINE uint16x8_t sad32x_avg(const uint8_t *a, int a_stride,
uint32_t vpx_sad32x##n##_neon(const uint8_t *src, int src_stride, \
const uint8_t *ref, int ref_stride) { \
const uint16x8_t abs = sad32x(src, src_stride, ref, ref_stride, n); \
return horizontal_add_16x8(abs); \
return vget_lane_u32(horizontal_add_uint16x8(abs), 0); \
} \
\
uint32_t vpx_sad32x##n##_avg_neon(const uint8_t *src, int src_stride, \
@ -249,20 +241,13 @@ static INLINE uint16x8_t sad32x_avg(const uint8_t *a, int a_stride,
const uint8_t *second_pred) { \
const uint16x8_t abs = \
sad32x_avg(src, src_stride, ref, ref_stride, second_pred, n); \
return horizontal_add_16x8(abs); \
return vget_lane_u32(horizontal_add_uint16x8(abs), 0); \
}
sad32xN(16);
sad32xN(32);
sad32xN(64);
static INLINE uint32_t horizontal_add_32x4(const uint32x4_t a) {
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);
}
static INLINE uint32x4_t sad64x(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
const int height) {
@ -344,7 +329,7 @@ static INLINE uint32x4_t sad64x_avg(const uint8_t *a, int a_stride,
uint32_t vpx_sad64x##n##_neon(const uint8_t *src, int src_stride, \
const uint8_t *ref, int ref_stride) { \
const uint32x4_t abs = sad64x(src, src_stride, ref, ref_stride, n); \
return horizontal_add_32x4(abs); \
return vget_lane_u32(horizontal_add_uint32x4(abs), 0); \
} \
\
uint32_t vpx_sad64x##n##_avg_neon(const uint8_t *src, int src_stride, \
@ -352,7 +337,7 @@ static INLINE uint32x4_t sad64x_avg(const uint8_t *a, int a_stride,
const uint8_t *second_pred) { \
const uint32x4_t abs = \
sad64x_avg(src, src_stride, ref, ref_stride, second_pred, n); \
return horizontal_add_32x4(abs); \
return vget_lane_u32(horizontal_add_uint32x4(abs), 0); \
}
sad64xN(32);

38
vpx_dsp/arm/sum_neon.h Normal file
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@ -0,0 +1,38 @@
/*
* 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_DSP_ARM_SUM_NEON_H_
#define VPX_DSP_ARM_SUM_NEON_H_
#include <arm_neon.h>
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
static INLINE int32x2_t horizontal_add_int16x8(const int16x8_t a) {
const int32x4_t b = vpaddlq_s16(a);
const int64x2_t c = vpaddlq_s32(b);
return vadd_s32(vreinterpret_s32_s64(vget_low_s64(c)),
vreinterpret_s32_s64(vget_high_s64(c)));
}
static INLINE uint32x2_t horizontal_add_uint16x8(const uint16x8_t a) {
const uint32x4_t b = vpaddlq_u16(a);
const uint64x2_t c = vpaddlq_u32(b);
return vadd_u32(vreinterpret_u32_u64(vget_low_u64(c)),
vreinterpret_u32_u64(vget_high_u64(c)));
}
static INLINE uint32x2_t horizontal_add_uint32x4(const uint32x4_t a) {
const uint64x2_t b = vpaddlq_u32(a);
return vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
vreinterpret_u32_u64(vget_high_u64(b)));
}
#endif // VPX_DSP_ARM_SUM_NEON_H_

34
vpx_dsp/arm/variance_neon.c
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@ -16,23 +16,9 @@
#include "vpx/vpx_integer.h"
#include "vpx_dsp/arm/mem_neon.h"
#include "vpx_dsp/arm/sum_neon.h"
#include "vpx_ports/mem.h"
static INLINE int horizontal_add_s16x8(const int16x8_t v_16x8) {
const int32x4_t a = vpaddlq_s16(v_16x8);
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);
}
static INLINE int horizontal_add_s32x4(const int32x4_t v_32x4) {
const int64x2_t b = vpaddlq_s32(v_32x4);
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);
}
// The variance helper functions use int16_t for sum. 8 values are accumulated
// and then added (at which point they expand up to int32_t). To avoid overflow,
// there can be no more than 32767 / 255 ~= 128 values accumulated in each
@ -79,8 +65,10 @@ static void variance_neon_w4x4(const uint8_t *a, int a_stride, const uint8_t *b,
b += 4 * b_stride;
}
*sum = horizontal_add_s16x8(sum_s16);
*sse = (uint32_t)horizontal_add_s32x4(vaddq_s32(sse_lo_s32, sse_hi_s32));
*sum = vget_lane_s32(horizontal_add_int16x8(sum_s16), 0);
*sse = vget_lane_u32(horizontal_add_uint32x4(vreinterpretq_u32_s32(
vaddq_s32(sse_lo_s32, sse_hi_s32))),
0);
}
// Process a block of any size where the width is divisible by 16.
@ -126,8 +114,10 @@ static void variance_neon_w16(const uint8_t *a, int a_stride, const uint8_t *b,
b += b_stride;
}
*sum = horizontal_add_s16x8(sum_s16);
*sse = (unsigned int)horizontal_add_s32x4(vaddq_s32(sse_lo_s32, sse_hi_s32));
*sum = vget_lane_s32(horizontal_add_int16x8(sum_s16), 0);
*sse = vget_lane_u32(horizontal_add_uint32x4(vreinterpretq_u32_s32(
vaddq_s32(sse_lo_s32, sse_hi_s32))),
0);
}
// Process a block of width 8 two rows at a time.
@ -165,8 +155,10 @@ static void variance_neon_w8x2(const uint8_t *a, int a_stride, const uint8_t *b,
i += 2;
} while (i < h);
*sum = horizontal_add_s16x8(sum_s16);
*sse = (uint32_t)horizontal_add_s32x4(vaddq_s32(sse_lo_s32, sse_hi_s32));
*sum = vget_lane_s32(horizontal_add_int16x8(sum_s16), 0);
*sse = vget_lane_u32(horizontal_add_uint32x4(vreinterpretq_u32_s32(
vaddq_s32(sse_lo_s32, sse_hi_s32))),
0);
}
void vpx_get8x8var_neon(const uint8_t *a, int a_stride, const uint8_t *b,

1
vpx_dsp/vpx_dsp.mk
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@ -368,6 +368,7 @@ endif # CONFIG_ENCODERS || CONFIG_POSTPROC || CONFIG_VP9_POSTPROC
# Neon utilities
DSP_SRCS-$(HAVE_NEON) += arm/mem_neon.h
DSP_SRCS-$(HAVE_NEON) += arm/sum_neon.h
DSP_SRCS-$(HAVE_NEON) += arm/transpose_neon.h
# PPC VSX utilities