Update to opus-HEAD-66611f1.

celt/mips/pitch_mipsr1.h

+/* Copyright (c) 2007-2008 CSIRO
+   Copyright (c) 2007-2009 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/**
+   @file pitch.h
+   @brief Pitch analysis
+ */
+
+/*
+   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.
+
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifndef PITCH_MIPSR1_H
+#define PITCH_MIPSR1_H
+
+#define OVERRIDE_DUAL_INNER_PROD
+static inline void dual_inner_prod(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
+      int N, opus_val32 *xy1, opus_val32 *xy2)
+{
+   int j;
+   opus_val32 xy01=0;
+   opus_val32 xy02=0;
+   asm volatile("MULT $ac1, $0, $0");
+   asm volatile("MULT $ac2, $0, $0");
+   /* Compute the norm of X+Y and X-Y as |X|^2 + |Y|^2 +/- sum(xy) */
+   for (j=0;j<N;j++)
+   {
+      asm volatile("MADD $ac1, %0, %1" : : "r" ((int)x[j]), "r" ((int)y01[j]));
+      asm volatile("MADD $ac2, %0, %1" : : "r" ((int)x[j]), "r" ((int)y02[j]));
+      ++j;
+      asm volatile("MADD $ac1, %0, %1" : : "r" ((int)x[j]), "r" ((int)y01[j]));
+      asm volatile("MADD $ac2, %0, %1" : : "r" ((int)x[j]), "r" ((int)y02[j]));
+   }
+   asm volatile ("mflo %0, $ac1": "=r"(xy01));
+   asm volatile ("mflo %0, $ac2": "=r"(xy02));
+   *xy1 = xy01;
+   *xy2 = xy02;
+}
+
+static inline void xcorr_kernel_mips(const opus_val16 * x,
+      const opus_val16 * y, opus_val32 sum[4], int len)
+{
+   int j;
+   opus_val16 y_0, y_1, y_2, y_3;
+
+    opus_int64 sum_0, sum_1, sum_2, sum_3;
+    sum_0 =  (opus_int64)sum[0];
+    sum_1 =  (opus_int64)sum[1];
+    sum_2 =  (opus_int64)sum[2];
+    sum_3 =  (opus_int64)sum[3];
+
+    y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */
+    y_0=*y++;
+    y_1=*y++;
+    y_2=*y++;
+    for (j=0;j<len-3;j+=4)
+    {
+        opus_val16 tmp;
+        tmp = *x++;
+        y_3=*y++;
+
+        sum_0 = __builtin_mips_madd( sum_0, tmp, y_0);
+        sum_1 = __builtin_mips_madd( sum_1, tmp, y_1);
+        sum_2 = __builtin_mips_madd( sum_2, tmp, y_2);
+        sum_3 = __builtin_mips_madd( sum_3, tmp, y_3);
+
+        tmp=*x++;
+        y_0=*y++;
+
+        sum_0 = __builtin_mips_madd( sum_0, tmp, y_1 );
+        sum_1 = __builtin_mips_madd( sum_1, tmp, y_2 );
+        sum_2 = __builtin_mips_madd( sum_2, tmp, y_3);
+        sum_3 = __builtin_mips_madd( sum_3, tmp, y_0);
+
+       tmp=*x++;
+       y_1=*y++;
+
+       sum_0 = __builtin_mips_madd( sum_0, tmp, y_2 );
+       sum_1 = __builtin_mips_madd( sum_1, tmp, y_3 );
+       sum_2 = __builtin_mips_madd( sum_2, tmp, y_0);
+       sum_3 = __builtin_mips_madd( sum_3, tmp, y_1);
+
+
+      tmp=*x++;
+      y_2=*y++;
+
+       sum_0 = __builtin_mips_madd( sum_0, tmp, y_3 );
+       sum_1 = __builtin_mips_madd( sum_1, tmp, y_0 );
+       sum_2 = __builtin_mips_madd( sum_2, tmp, y_1);
+       sum_3 = __builtin_mips_madd( sum_3, tmp, y_2);
+
+   }
+   if (j++<len)
+   {
+      opus_val16 tmp = *x++;
+      y_3=*y++;
+
+       sum_0 = __builtin_mips_madd( sum_0, tmp, y_0 );
+       sum_1 = __builtin_mips_madd( sum_1, tmp, y_1 );
+       sum_2 = __builtin_mips_madd( sum_2, tmp, y_2);
+       sum_3 = __builtin_mips_madd( sum_3, tmp, y_3);
+   }
+
+   if (j++<len)
+   {
+      opus_val16 tmp=*x++;
+      y_0=*y++;
+
+      sum_0 = __builtin_mips_madd( sum_0, tmp, y_1 );
+      sum_1 = __builtin_mips_madd( sum_1, tmp, y_2 );
+      sum_2 = __builtin_mips_madd( sum_2, tmp, y_3);
+      sum_3 = __builtin_mips_madd( sum_3, tmp, y_0);
+   }
+
+   if (j<len)
+   {
+      opus_val16 tmp=*x++;
+      y_1=*y++;
+
+       sum_0 = __builtin_mips_madd( sum_0, tmp, y_2 );
+       sum_1 = __builtin_mips_madd( sum_1, tmp, y_3 );
+       sum_2 = __builtin_mips_madd( sum_2, tmp, y_0);
+       sum_3 = __builtin_mips_madd( sum_3, tmp, y_1);
+
+   }
+
+   sum[0] = (opus_val32)sum_0;
+   sum[1] = (opus_val32)sum_1;
+   sum[2] = (opus_val32)sum_2;
+   sum[3] = (opus_val32)sum_3;
+}
+
+#define OVERRIDE_XCORR_KERNEL
+#define xcorr_kernel(x, y, sum, len, arch) \
+    ((void)(arch), xcorr_kernel_mips(x, y, sum, len))
+
+#endif /* PITCH_MIPSR1_H */