290 lines
10 KiB
C
290 lines
10 KiB
C
/***********************************************************************
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Copyright (c) 2017 Google Inc.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Internet Society, IETF or IETF Trust, nor the
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names of specific contributors, may be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <arm_neon.h>
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#include "pitch.h"
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#ifdef FIXED_POINT
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opus_val32 celt_inner_prod_neon(const opus_val16 *x, const opus_val16 *y, int N)
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{
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int i;
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opus_val32 xy;
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int16x8_t x_s16x8, y_s16x8;
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int32x4_t xy_s32x4 = vdupq_n_s32(0);
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int64x2_t xy_s64x2;
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int64x1_t xy_s64x1;
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for (i = 0; i < N - 7; i += 8) {
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x_s16x8 = vld1q_s16(&x[i]);
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y_s16x8 = vld1q_s16(&y[i]);
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xy_s32x4 = vmlal_s16(xy_s32x4, vget_low_s16 (x_s16x8), vget_low_s16 (y_s16x8));
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xy_s32x4 = vmlal_s16(xy_s32x4, vget_high_s16(x_s16x8), vget_high_s16(y_s16x8));
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}
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if (N - i >= 4) {
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const int16x4_t x_s16x4 = vld1_s16(&x[i]);
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const int16x4_t y_s16x4 = vld1_s16(&y[i]);
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xy_s32x4 = vmlal_s16(xy_s32x4, x_s16x4, y_s16x4);
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i += 4;
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}
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xy_s64x2 = vpaddlq_s32(xy_s32x4);
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xy_s64x1 = vadd_s64(vget_low_s64(xy_s64x2), vget_high_s64(xy_s64x2));
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xy = vget_lane_s32(vreinterpret_s32_s64(xy_s64x1), 0);
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for (; i < N; i++) {
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xy = MAC16_16(xy, x[i], y[i]);
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}
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#ifdef OPUS_CHECK_ASM
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celt_assert(celt_inner_prod_c(x, y, N) == xy);
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#endif
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return xy;
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}
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void dual_inner_prod_neon(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
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int N, opus_val32 *xy1, opus_val32 *xy2)
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{
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int i;
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opus_val32 xy01, xy02;
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int16x8_t x_s16x8, y01_s16x8, y02_s16x8;
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int32x4_t xy01_s32x4 = vdupq_n_s32(0);
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int32x4_t xy02_s32x4 = vdupq_n_s32(0);
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int64x2_t xy01_s64x2, xy02_s64x2;
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int64x1_t xy01_s64x1, xy02_s64x1;
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for (i = 0; i < N - 7; i += 8) {
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x_s16x8 = vld1q_s16(&x[i]);
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y01_s16x8 = vld1q_s16(&y01[i]);
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y02_s16x8 = vld1q_s16(&y02[i]);
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xy01_s32x4 = vmlal_s16(xy01_s32x4, vget_low_s16 (x_s16x8), vget_low_s16 (y01_s16x8));
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xy02_s32x4 = vmlal_s16(xy02_s32x4, vget_low_s16 (x_s16x8), vget_low_s16 (y02_s16x8));
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xy01_s32x4 = vmlal_s16(xy01_s32x4, vget_high_s16(x_s16x8), vget_high_s16(y01_s16x8));
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xy02_s32x4 = vmlal_s16(xy02_s32x4, vget_high_s16(x_s16x8), vget_high_s16(y02_s16x8));
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}
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if (N - i >= 4) {
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const int16x4_t x_s16x4 = vld1_s16(&x[i]);
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const int16x4_t y01_s16x4 = vld1_s16(&y01[i]);
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const int16x4_t y02_s16x4 = vld1_s16(&y02[i]);
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xy01_s32x4 = vmlal_s16(xy01_s32x4, x_s16x4, y01_s16x4);
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xy02_s32x4 = vmlal_s16(xy02_s32x4, x_s16x4, y02_s16x4);
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i += 4;
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}
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xy01_s64x2 = vpaddlq_s32(xy01_s32x4);
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xy02_s64x2 = vpaddlq_s32(xy02_s32x4);
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xy01_s64x1 = vadd_s64(vget_low_s64(xy01_s64x2), vget_high_s64(xy01_s64x2));
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xy02_s64x1 = vadd_s64(vget_low_s64(xy02_s64x2), vget_high_s64(xy02_s64x2));
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xy01 = vget_lane_s32(vreinterpret_s32_s64(xy01_s64x1), 0);
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xy02 = vget_lane_s32(vreinterpret_s32_s64(xy02_s64x1), 0);
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for (; i < N; i++) {
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xy01 = MAC16_16(xy01, x[i], y01[i]);
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xy02 = MAC16_16(xy02, x[i], y02[i]);
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}
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*xy1 = xy01;
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*xy2 = xy02;
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#ifdef OPUS_CHECK_ASM
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{
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opus_val32 xy1_c, xy2_c;
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dual_inner_prod_c(x, y01, y02, N, &xy1_c, &xy2_c);
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celt_assert(xy1_c == *xy1);
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celt_assert(xy2_c == *xy2);
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}
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#endif
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}
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#else /* !FIXED_POINT */
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/* ========================================================================== */
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#ifdef OPUS_CHECK_ASM
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/* This part of code simulates floating-point NEON operations. */
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/* celt_inner_prod_neon_float_c_simulation() simulates the floating-point */
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/* operations of celt_inner_prod_neon(), and both functions should have bit */
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/* exact output. */
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static opus_val32 celt_inner_prod_neon_float_c_simulation(const opus_val16 *x, const opus_val16 *y, int N)
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{
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int i;
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opus_val32 xy, xy0 = 0, xy1 = 0, xy2 = 0, xy3 = 0;
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for (i = 0; i < N - 3; i += 4) {
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xy0 = MAC16_16(xy0, x[i + 0], y[i + 0]);
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xy1 = MAC16_16(xy1, x[i + 1], y[i + 1]);
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xy2 = MAC16_16(xy2, x[i + 2], y[i + 2]);
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xy3 = MAC16_16(xy3, x[i + 3], y[i + 3]);
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}
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xy0 += xy2;
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xy1 += xy3;
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xy = xy0 + xy1;
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for (; i < N; i++) {
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xy = MAC16_16(xy, x[i], y[i]);
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}
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return xy;
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}
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/* dual_inner_prod_neon_float_c_simulation() simulates the floating-point */
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/* operations of dual_inner_prod_neon(), and both functions should have bit */
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/* exact output. */
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static void dual_inner_prod_neon_float_c_simulation(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
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int N, opus_val32 *xy1, opus_val32 *xy2)
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{
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int i;
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opus_val32 xy01, xy02, xy01_0 = 0, xy01_1 = 0, xy01_2 = 0, xy01_3 = 0, xy02_0 = 0, xy02_1 = 0, xy02_2 = 0, xy02_3 = 0;
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for (i = 0; i < N - 3; i += 4) {
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xy01_0 = MAC16_16(xy01_0, x[i + 0], y01[i + 0]);
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xy01_1 = MAC16_16(xy01_1, x[i + 1], y01[i + 1]);
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xy01_2 = MAC16_16(xy01_2, x[i + 2], y01[i + 2]);
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xy01_3 = MAC16_16(xy01_3, x[i + 3], y01[i + 3]);
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xy02_0 = MAC16_16(xy02_0, x[i + 0], y02[i + 0]);
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xy02_1 = MAC16_16(xy02_1, x[i + 1], y02[i + 1]);
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xy02_2 = MAC16_16(xy02_2, x[i + 2], y02[i + 2]);
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xy02_3 = MAC16_16(xy02_3, x[i + 3], y02[i + 3]);
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}
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xy01_0 += xy01_2;
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xy02_0 += xy02_2;
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xy01_1 += xy01_3;
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xy02_1 += xy02_3;
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xy01 = xy01_0 + xy01_1;
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xy02 = xy02_0 + xy02_1;
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for (; i < N; i++) {
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xy01 = MAC16_16(xy01, x[i], y01[i]);
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xy02 = MAC16_16(xy02, x[i], y02[i]);
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}
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*xy1 = xy01;
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*xy2 = xy02;
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}
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#endif /* OPUS_CHECK_ASM */
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/* ========================================================================== */
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opus_val32 celt_inner_prod_neon(const opus_val16 *x, const opus_val16 *y, int N)
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{
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int i;
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opus_val32 xy;
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float32x4_t xy_f32x4 = vdupq_n_f32(0);
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float32x2_t xy_f32x2;
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for (i = 0; i < N - 7; i += 8) {
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float32x4_t x_f32x4, y_f32x4;
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x_f32x4 = vld1q_f32(&x[i]);
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y_f32x4 = vld1q_f32(&y[i]);
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xy_f32x4 = vmlaq_f32(xy_f32x4, x_f32x4, y_f32x4);
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x_f32x4 = vld1q_f32(&x[i + 4]);
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y_f32x4 = vld1q_f32(&y[i + 4]);
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xy_f32x4 = vmlaq_f32(xy_f32x4, x_f32x4, y_f32x4);
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}
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if (N - i >= 4) {
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const float32x4_t x_f32x4 = vld1q_f32(&x[i]);
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const float32x4_t y_f32x4 = vld1q_f32(&y[i]);
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xy_f32x4 = vmlaq_f32(xy_f32x4, x_f32x4, y_f32x4);
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i += 4;
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}
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xy_f32x2 = vadd_f32(vget_low_f32(xy_f32x4), vget_high_f32(xy_f32x4));
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xy_f32x2 = vpadd_f32(xy_f32x2, xy_f32x2);
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xy = vget_lane_f32(xy_f32x2, 0);
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for (; i < N; i++) {
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xy = MAC16_16(xy, x[i], y[i]);
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}
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#ifdef OPUS_CHECK_ASM
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celt_assert(ABS32(celt_inner_prod_neon_float_c_simulation(x, y, N) - xy) <= VERY_SMALL);
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#endif
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return xy;
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}
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void dual_inner_prod_neon(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
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int N, opus_val32 *xy1, opus_val32 *xy2)
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{
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int i;
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opus_val32 xy01, xy02;
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float32x4_t xy01_f32x4 = vdupq_n_f32(0);
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float32x4_t xy02_f32x4 = vdupq_n_f32(0);
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float32x2_t xy01_f32x2, xy02_f32x2;
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for (i = 0; i < N - 7; i += 8) {
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float32x4_t x_f32x4, y01_f32x4, y02_f32x4;
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x_f32x4 = vld1q_f32(&x[i]);
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y01_f32x4 = vld1q_f32(&y01[i]);
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y02_f32x4 = vld1q_f32(&y02[i]);
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xy01_f32x4 = vmlaq_f32(xy01_f32x4, x_f32x4, y01_f32x4);
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xy02_f32x4 = vmlaq_f32(xy02_f32x4, x_f32x4, y02_f32x4);
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x_f32x4 = vld1q_f32(&x[i + 4]);
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y01_f32x4 = vld1q_f32(&y01[i + 4]);
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y02_f32x4 = vld1q_f32(&y02[i + 4]);
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xy01_f32x4 = vmlaq_f32(xy01_f32x4, x_f32x4, y01_f32x4);
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xy02_f32x4 = vmlaq_f32(xy02_f32x4, x_f32x4, y02_f32x4);
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}
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if (N - i >= 4) {
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const float32x4_t x_f32x4 = vld1q_f32(&x[i]);
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const float32x4_t y01_f32x4 = vld1q_f32(&y01[i]);
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const float32x4_t y02_f32x4 = vld1q_f32(&y02[i]);
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xy01_f32x4 = vmlaq_f32(xy01_f32x4, x_f32x4, y01_f32x4);
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xy02_f32x4 = vmlaq_f32(xy02_f32x4, x_f32x4, y02_f32x4);
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i += 4;
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}
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xy01_f32x2 = vadd_f32(vget_low_f32(xy01_f32x4), vget_high_f32(xy01_f32x4));
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xy02_f32x2 = vadd_f32(vget_low_f32(xy02_f32x4), vget_high_f32(xy02_f32x4));
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xy01_f32x2 = vpadd_f32(xy01_f32x2, xy01_f32x2);
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xy02_f32x2 = vpadd_f32(xy02_f32x2, xy02_f32x2);
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xy01 = vget_lane_f32(xy01_f32x2, 0);
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xy02 = vget_lane_f32(xy02_f32x2, 0);
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for (; i < N; i++) {
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xy01 = MAC16_16(xy01, x[i], y01[i]);
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xy02 = MAC16_16(xy02, x[i], y02[i]);
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}
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*xy1 = xy01;
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*xy2 = xy02;
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#ifdef OPUS_CHECK_ASM
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{
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opus_val32 xy1_c, xy2_c;
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dual_inner_prod_neon_float_c_simulation(x, y01, y02, N, &xy1_c, &xy2_c);
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celt_assert(ABS32(xy1_c - *xy1) <= VERY_SMALL);
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celt_assert(ABS32(xy2_c - *xy2) <= VERY_SMALL);
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}
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#endif
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}
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#endif /* FIXED_POINT */
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