Update FLAC to 1.3.1

src/libFLAC/lpc_intrin_sse.c

+/* libFLAC - Free Lossless Audio Codec library
+ * Copyright (C) 2000-2009  Josh Coalson
+ * Copyright (C) 2011-2014  Xiph.Org Foundation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+#ifndef FLAC__NO_ASM
+#if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && defined FLAC__HAS_X86INTRIN
+#include "private/lpc.h"
+#ifdef FLAC__SSE_SUPPORTED
+
+#include "FLAC/assert.h"
+#include "FLAC/format.h"
+
+#include <xmmintrin.h> /* SSE */
+
+#if 1
+/* Faster on current Intel (starting from Core i aka Nehalem) and all AMD CPUs */
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        int i;
+        int limit = data_len - 4;
+        __m128 sum0;
+
+        (void) lag;
+        FLAC__ASSERT(lag <= 4);
+        FLAC__ASSERT(lag <= data_len);
+
+        sum0 = _mm_setzero_ps();
+
+        for(i = 0; i <= limit; i++) {
+                __m128 d, d0;
+                d0 = _mm_loadu_ps(data+i);
+                d = d0; d = _mm_shuffle_ps(d, d, 0);
+                sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
+        }
+
+        {
+                __m128 d0 = _mm_setzero_ps();
+                limit++; if(limit < 0) limit = 0;
+
+                for(i = data_len-1; i >= limit; i--) {
+                        __m128 d;
+                        d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
+                        d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
+                        d0 = _mm_move_ss(d0, d);
+                        sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
+                }
+        }
+
+        _mm_storeu_ps(autoc,   sum0);
+}
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        int i;
+        int limit = data_len - 8;
+        __m128 sum0, sum1;
+
+        (void) lag;
+        FLAC__ASSERT(lag <= 8);
+        FLAC__ASSERT(lag <= data_len);
+
+        sum0 = _mm_setzero_ps();
+        sum1 = _mm_setzero_ps();
+
+        for(i = 0; i <= limit; i++) {
+                __m128 d, d0, d1;
+                d0 = _mm_loadu_ps(data+i);
+                d1 = _mm_loadu_ps(data+i+4);
+                d = d0; d = _mm_shuffle_ps(d, d, 0);
+                sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
+                sum1 = _mm_add_ps(sum1, _mm_mul_ps(d1, d));
+        }
+
+        {
+                __m128 d0 = _mm_setzero_ps();
+                __m128 d1 = _mm_setzero_ps();
+                limit++; if(limit < 0) limit = 0;
+
+                for(i = data_len-1; i >= limit; i--) {
+                        __m128 d;
+                        d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
+                        d1 = _mm_shuffle_ps(d1, d1, _MM_SHUFFLE(2,1,0,3));
+                        d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
+                        d1 = _mm_move_ss(d1, d0);
+                        d0 = _mm_move_ss(d0, d);
+                        sum1 = _mm_add_ps(sum1, _mm_mul_ps(d, d1));
+                        sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
+                }
+        }
+
+        _mm_storeu_ps(autoc,   sum0);
+        _mm_storeu_ps(autoc+4, sum1);
+}
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        int i;
+        int limit = data_len - 12;
+        __m128 sum0, sum1, sum2;
+
+        (void) lag;
+        FLAC__ASSERT(lag <= 12);
+        FLAC__ASSERT(lag <= data_len);
+
+        sum0 = _mm_setzero_ps();
+        sum1 = _mm_setzero_ps();
+        sum2 = _mm_setzero_ps();
+
+        for(i = 0; i <= limit; i++) {
+                __m128 d, d0, d1, d2;
+                d0 = _mm_loadu_ps(data+i);
+                d1 = _mm_loadu_ps(data+i+4);
+                d2 = _mm_loadu_ps(data+i+8);
+                d = d0; d = _mm_shuffle_ps(d, d, 0);
+                sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
+                sum1 = _mm_add_ps(sum1, _mm_mul_ps(d1, d));
+                sum2 = _mm_add_ps(sum2, _mm_mul_ps(d2, d));
+        }
+
+        {
+                __m128 d0 = _mm_setzero_ps();
+                __m128 d1 = _mm_setzero_ps();
+                __m128 d2 = _mm_setzero_ps();
+                limit++; if(limit < 0) limit = 0;
+
+                for(i = data_len-1; i >= limit; i--) {
+                        __m128 d;
+                        d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
+                        d2 = _mm_shuffle_ps(d2, d2, _MM_SHUFFLE(2,1,0,3));
+                        d1 = _mm_shuffle_ps(d1, d1, _MM_SHUFFLE(2,1,0,3));
+                        d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
+                        d2 = _mm_move_ss(d2, d1);
+                        d1 = _mm_move_ss(d1, d0);
+                        d0 = _mm_move_ss(d0, d);
+                        sum2 = _mm_add_ps(sum2, _mm_mul_ps(d, d2));
+                        sum1 = _mm_add_ps(sum1, _mm_mul_ps(d, d1));
+                        sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
+                }
+        }
+
+        _mm_storeu_ps(autoc,   sum0);
+        _mm_storeu_ps(autoc+4, sum1);
+        _mm_storeu_ps(autoc+8, sum2);
+}
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        int i;
+        int limit = data_len - 16;
+        __m128 sum0, sum1, sum2, sum3;
+
+        (void) lag;
+        FLAC__ASSERT(lag <= 16);
+        FLAC__ASSERT(lag <= data_len);
+
+        sum0 = _mm_setzero_ps();
+        sum1 = _mm_setzero_ps();
+        sum2 = _mm_setzero_ps();
+        sum3 = _mm_setzero_ps();
+
+        for(i = 0; i <= limit; i++) {
+                __m128 d, d0, d1, d2, d3;
+                d0 = _mm_loadu_ps(data+i);
+                d1 = _mm_loadu_ps(data+i+4);
+                d2 = _mm_loadu_ps(data+i+8);
+                d3 = _mm_loadu_ps(data+i+12);
+                d = d0; d = _mm_shuffle_ps(d, d, 0);
+                sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
+                sum1 = _mm_add_ps(sum1, _mm_mul_ps(d1, d));
+                sum2 = _mm_add_ps(sum2, _mm_mul_ps(d2, d));
+                sum3 = _mm_add_ps(sum3, _mm_mul_ps(d3, d));
+        }
+
+        {
+                __m128 d0 = _mm_setzero_ps();
+                __m128 d1 = _mm_setzero_ps();
+                __m128 d2 = _mm_setzero_ps();
+                __m128 d3 = _mm_setzero_ps();
+                limit++; if(limit < 0) limit = 0;
+
+                for(i = data_len-1; i >= limit; i--) {
+                        __m128 d;
+                        d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
+                        d3 = _mm_shuffle_ps(d3, d3, _MM_SHUFFLE(2,1,0,3));
+                        d2 = _mm_shuffle_ps(d2, d2, _MM_SHUFFLE(2,1,0,3));
+                        d1 = _mm_shuffle_ps(d1, d1, _MM_SHUFFLE(2,1,0,3));
+                        d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
+                        d3 = _mm_move_ss(d3, d2);
+                        d2 = _mm_move_ss(d2, d1);
+                        d1 = _mm_move_ss(d1, d0);
+                        d0 = _mm_move_ss(d0, d);
+                        sum3 = _mm_add_ps(sum3, _mm_mul_ps(d, d3));
+                        sum2 = _mm_add_ps(sum2, _mm_mul_ps(d, d2));
+                        sum1 = _mm_add_ps(sum1, _mm_mul_ps(d, d1));
+                        sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
+                }
+        }
+
+        _mm_storeu_ps(autoc,   sum0);
+        _mm_storeu_ps(autoc+4, sum1);
+        _mm_storeu_ps(autoc+8, sum2);
+        _mm_storeu_ps(autoc+12,sum3);
+}
+
+#else
+/* Faster on older Intel CPUs (up to Core 2) */
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        __m128 xmm0, xmm2, xmm5;
+
+        (void) lag;
+        FLAC__ASSERT(lag > 0);
+        FLAC__ASSERT(lag <= 4);
+        FLAC__ASSERT(lag <= data_len);
+        FLAC__ASSERT(data_len > 0);
+
+        xmm5 = _mm_setzero_ps();
+
+        xmm0 = _mm_load_ss(data++);
+        xmm2 = xmm0;
+        xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
+
+        xmm0 = _mm_mul_ps(xmm0, xmm2);
+        xmm5 = _mm_add_ps(xmm5, xmm0);
+
+        data_len--;
+
+        while(data_len)
+        {
+                xmm0 = _mm_load1_ps(data++);
+
+                xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
+                xmm2 = _mm_move_ss(xmm2, xmm0);
+                xmm0 = _mm_mul_ps(xmm0, xmm2);
+                xmm5 = _mm_add_ps(xmm5, xmm0);
+
+                data_len--;
+        }
+
+        _mm_storeu_ps(autoc, xmm5);
+}
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        __m128 xmm0, xmm1, xmm2, xmm3, xmm5, xmm6;
+
+        (void) lag;
+        FLAC__ASSERT(lag > 0);
+        FLAC__ASSERT(lag <= 8);
+        FLAC__ASSERT(lag <= data_len);
+        FLAC__ASSERT(data_len > 0);
+
+        xmm5 = _mm_setzero_ps();
+        xmm6 = _mm_setzero_ps();
+
+        xmm0 = _mm_load_ss(data++);
+        xmm2 = xmm0;
+        xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
+        xmm3 = _mm_setzero_ps();
+
+        xmm0 = _mm_mul_ps(xmm0, xmm2);
+        xmm5 = _mm_add_ps(xmm5, xmm0);
+
+        data_len--;
+
+        while(data_len)
+        {
+                xmm0 = _mm_load1_ps(data++);
+
+                xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
+                xmm3 = _mm_shuffle_ps(xmm3, xmm3, _MM_SHUFFLE(2,1,0,3));
+                xmm3 = _mm_move_ss(xmm3, xmm2);
+                xmm2 = _mm_move_ss(xmm2, xmm0);
+
+                xmm1 = xmm0;
+                xmm1 = _mm_mul_ps(xmm1, xmm3);
+                xmm0 = _mm_mul_ps(xmm0, xmm2);
+                xmm6 = _mm_add_ps(xmm6, xmm1);
+                xmm5 = _mm_add_ps(xmm5, xmm0);
+
+                data_len--;
+        }
+
+        _mm_storeu_ps(autoc,   xmm5);
+        _mm_storeu_ps(autoc+4, xmm6);
+}
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        __m128 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7;
+
+        (void) lag;
+        FLAC__ASSERT(lag > 0);
+        FLAC__ASSERT(lag <= 12);
+        FLAC__ASSERT(lag <= data_len);
+        FLAC__ASSERT(data_len > 0);
+
+        xmm5 = _mm_setzero_ps();
+        xmm6 = _mm_setzero_ps();
+        xmm7 = _mm_setzero_ps();
+
+        xmm0 = _mm_load_ss(data++);
+        xmm2 = xmm0;
+        xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
+        xmm3 = _mm_setzero_ps();
+        xmm4 = _mm_setzero_ps();
+
+        xmm0 = _mm_mul_ps(xmm0, xmm2);
+        xmm5 = _mm_add_ps(xmm5, xmm0);
+
+        data_len--;
+
+        while(data_len)
+        {
+                xmm0 = _mm_load1_ps(data++);
+
+                xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
+                xmm3 = _mm_shuffle_ps(xmm3, xmm3, _MM_SHUFFLE(2,1,0,3));
+                xmm4 = _mm_shuffle_ps(xmm4, xmm4, _MM_SHUFFLE(2,1,0,3));
+                xmm4 = _mm_move_ss(xmm4, xmm3);
+                xmm3 = _mm_move_ss(xmm3, xmm2);
+                xmm2 = _mm_move_ss(xmm2, xmm0);
+
+                xmm1 = xmm0;
+                xmm1 = _mm_mul_ps(xmm1, xmm2);
+                xmm5 = _mm_add_ps(xmm5, xmm1);
+                xmm1 = xmm0;
+                xmm1 = _mm_mul_ps(xmm1, xmm3);
+                xmm6 = _mm_add_ps(xmm6, xmm1);
+                xmm0 = _mm_mul_ps(xmm0, xmm4);
+                xmm7 = _mm_add_ps(xmm7, xmm0);
+
+                data_len--;
+        }
+
+        _mm_storeu_ps(autoc,   xmm5);
+        _mm_storeu_ps(autoc+4, xmm6);
+        _mm_storeu_ps(autoc+8, xmm7);
+}
+
+FLAC__SSE_TARGET("sse")
+void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
+{
+        __m128 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9;
+
+        (void) lag;
+        FLAC__ASSERT(lag > 0);
+        FLAC__ASSERT(lag <= 16);
+        FLAC__ASSERT(lag <= data_len);
+        FLAC__ASSERT(data_len > 0);
+
+        xmm6 = _mm_setzero_ps();
+        xmm7 = _mm_setzero_ps();
+        xmm8 = _mm_setzero_ps();
+        xmm9 = _mm_setzero_ps();
+
+        xmm0 = _mm_load_ss(data++);
+        xmm2 = xmm0;
+        xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
+        xmm3 = _mm_setzero_ps();
+        xmm4 = _mm_setzero_ps();
+        xmm5 = _mm_setzero_ps();
+
+        xmm0 = _mm_mul_ps(xmm0, xmm2);
+        xmm6 = _mm_add_ps(xmm6, xmm0);
+
+        data_len--;
+
+        while(data_len)
+        {
+                xmm0 = _mm_load1_ps(data++);
+
+                /* shift xmm5:xmm4:xmm3:xmm2 left by one float */
+                xmm5 = _mm_shuffle_ps(xmm5, xmm5, _MM_SHUFFLE(2,1,0,3));
+                xmm4 = _mm_shuffle_ps(xmm4, xmm4, _MM_SHUFFLE(2,1,0,3));
+                xmm3 = _mm_shuffle_ps(xmm3, xmm3, _MM_SHUFFLE(2,1,0,3));
+                xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
+                xmm5 = _mm_move_ss(xmm5, xmm4);
+                xmm4 = _mm_move_ss(xmm4, xmm3);
+                xmm3 = _mm_move_ss(xmm3, xmm2);
+                xmm2 = _mm_move_ss(xmm2, xmm0);
+
+                /* xmm9|xmm8|xmm7|xmm6 += xmm0|xmm0|xmm0|xmm0 * xmm5|xmm4|xmm3|xmm2 */
+                xmm1 = xmm0;
+                xmm1 = _mm_mul_ps(xmm1, xmm5);
+                xmm9 = _mm_add_ps(xmm9, xmm1);
+                xmm1 = xmm0;
+                xmm1 = _mm_mul_ps(xmm1, xmm4);
+                xmm8 = _mm_add_ps(xmm8, xmm1);
+                xmm1 = xmm0;
+                xmm1 = _mm_mul_ps(xmm1, xmm3);
+                xmm7 = _mm_add_ps(xmm7, xmm1);
+                xmm0 = _mm_mul_ps(xmm0, xmm2);
+                xmm6 = _mm_add_ps(xmm6, xmm0);
+
+                data_len--;
+        }
+
+        _mm_storeu_ps(autoc,   xmm6);
+        _mm_storeu_ps(autoc+4, xmm7);
+        _mm_storeu_ps(autoc+8, xmm8);
+        _mm_storeu_ps(autoc+12,xmm9);
+}
+#endif
+
+#endif /* FLAC__SSE_SUPPORTED */
+#endif /* (FLAC__CPU_IA32 || FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN */
+#endif /* FLAC__NO_ASM */
+#endif /* FLAC__INTEGER_ONLY_LIBRARY */