AltiVec optimized fdct patch by (James Klicman <james at klicman dot org>)

Originally committed as revision 2439 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 498 insertions, 0 deletions

diff --git a/libavcodec/ppc/fdct_altivec.c b/libavcodec/ppc/fdct_altivec.c
new file mode 100644
index 0000000000..99df5ced34
--- /dev/null
+++ b/libavcodec/ppc/fdct_altivec.c
@@ -0,0 +1,498 @@
+/* ffmpeg/libavcodec/ppc/fdct_altivec.c, this file is part of the
+ * AltiVec optimized library for the FFMPEG Multimedia System
+ * Copyright (C) 2003  James Klicman <james@klicman.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "../common.h"
+#include "../dsputil.h"
+#include "dsputil_altivec.h"
+#include "gcc_fixes.h"
+
+
+#define vs16(v) ((vector signed short)(v))
+#define vs32(v) ((vector signed int)(v))
+#define vu8(v)  ((vector unsigned char)(v))
+#define vu16(v) ((vector unsigned short)(v))
+#define vu32(v) ((vector unsigned int)(v))
+
+
+#define C1     0.98078525066375732421875000 /* cos(1*PI/16) */
+#define C2     0.92387950420379638671875000 /* cos(2*PI/16) */
+#define C3     0.83146959543228149414062500 /* cos(3*PI/16) */
+#define C4     0.70710676908493041992187500 /* cos(4*PI/16) */
+#define C5     0.55557024478912353515625000 /* cos(5*PI/16) */
+#define C6     0.38268342614173889160156250 /* cos(6*PI/16) */
+#define C7     0.19509032368659973144531250 /* cos(7*PI/16) */
+#define SQRT_2 1.41421353816986083984375000 /* sqrt(2)      */
+
+
+#define W0 -(2 * C2)
+#define W1 (2 * C6)
+#define W2 (SQRT_2 * C6)
+#define W3 (SQRT_2 * C3)
+#define W4 (SQRT_2 * (-C1 + C3 + C5 - C7))
+#define W5 (SQRT_2 * ( C1 + C3 - C5 + C7))
+#define W6 (SQRT_2 * ( C1 + C3 + C5 - C7))
+#define W7 (SQRT_2 * ( C1 + C3 - C5 - C7))
+#define W8 (SQRT_2 * ( C7 - C3))
+#define W9 (SQRT_2 * (-C1 - C3))
+#define WA (SQRT_2 * (-C3 - C5))
+#define WB (SQRT_2 * ( C5 - C3))
+
+
+static vector float fdctconsts[3] = {
+    (vector float)AVV( W0, W1, W2, W3 ),
+    (vector float)AVV( W4, W5, W6, W7 ),
+    (vector float)AVV( W8, W9, WA, WB )
+};
+
+#define LD_W0 vec_splat(cnsts0, 0)
+#define LD_W1 vec_splat(cnsts0, 1)
+#define LD_W2 vec_splat(cnsts0, 2)
+#define LD_W3 vec_splat(cnsts0, 3)
+#define LD_W4 vec_splat(cnsts1, 0)
+#define LD_W5 vec_splat(cnsts1, 1)
+#define LD_W6 vec_splat(cnsts1, 2)
+#define LD_W7 vec_splat(cnsts1, 3)
+#define LD_W8 vec_splat(cnsts2, 0)
+#define LD_W9 vec_splat(cnsts2, 1)
+#define LD_WA vec_splat(cnsts2, 2)
+#define LD_WB vec_splat(cnsts2, 3)
+
+
+#define FDCTROW(b0,b1,b2,b3,b4,b5,b6,b7) /* {{{ */                  \
+    x0 = vec_add(b0, b7);               /* x0 = b0 + b7; */         \
+    x7 = vec_sub(b0, b7);               /* x7 = b0 - b7; */         \
+    x1 = vec_add(b1, b6);               /* x1 = b1 + b6; */         \
+    x6 = vec_sub(b1, b6);               /* x6 = b1 - b6; */         \
+    x2 = vec_add(b2, b5);               /* x2 = b2 + b5; */         \
+    x5 = vec_sub(b2, b5);               /* x5 = b2 - b5; */         \
+    x3 = vec_add(b3, b4);               /* x3 = b3 + b4; */         \
+    x4 = vec_sub(b3, b4);               /* x4 = b3 - b4; */         \
+                                                                    \
+    b7 = vec_add(x0, x3);               /* b7 = x0 + x3; */         \
+    b1 = vec_add(x1, x2);               /* b1 = x1 + x2; */         \
+    b0 = vec_add(b7, b1);               /* b0 = b7 + b1; */         \
+    b4 = vec_sub(b7, b1);               /* b4 = b7 - b1; */         \
+                                                                    \
+    b2 = vec_sub(x0, x3);               /* b2 = x0 - x3; */         \
+    b6 = vec_sub(x1, x2);               /* b6 = x1 - x2; */         \
+    b5 = vec_add(b6, b2);               /* b5 = b6 + b2; */         \
+    cnst = LD_W2;                                                   \
+    b5 = vec_madd(cnst, b5, mzero);     /* b5 = b5 * W2; */         \
+    cnst = LD_W1;                                                   \
+    b2 = vec_madd(cnst, b2, b5);        /* b2 = b5 + b2 * W1; */    \
+    cnst = LD_W0;                                                   \
+    b6 = vec_madd(cnst, b6, b5);        /* b6 = b5 + b6 * W0; */    \
+                                                                    \
+    x0 = vec_add(x4, x7);               /* x0 = x4 + x7; */         \
+    x1 = vec_add(x5, x6);               /* x1 = x5 + x6; */         \
+    x2 = vec_add(x4, x6);               /* x2 = x4 + x6; */         \
+    x3 = vec_add(x5, x7);               /* x3 = x5 + x7; */         \
+    x8 = vec_add(x2, x3);               /* x8 = x2 + x3; */         \
+    cnst = LD_W3;                                                   \
+    x8 = vec_madd(cnst, x8, mzero);     /* x8 = x8 * W3; */         \
+                                                                    \
+    cnst = LD_W8;                                                   \
+    x0 = vec_madd(cnst, x0, mzero);     /* x0 *= W8; */             \
+    cnst = LD_W9;                                                   \
+    x1 = vec_madd(cnst, x1, mzero);     /* x1 *= W9; */             \
+    cnst = LD_WA;                                                   \
+    x2 = vec_madd(cnst, x2, x8);        /* x2 = x2 * WA + x8; */    \
+    cnst = LD_WB;                                                   \
+    x3 = vec_madd(cnst, x3, x8);        /* x3 = x3 * WB + x8; */    \
+                                                                    \
+    cnst = LD_W4;                                                   \
+    b7 = vec_madd(cnst, x4, x0);        /* b7 = x4 * W4 + x0; */    \
+    cnst = LD_W5;                                                   \
+    b5 = vec_madd(cnst, x5, x1);        /* b5 = x5 * W5 + x1; */    \
+    cnst = LD_W6;                                                   \
+    b3 = vec_madd(cnst, x6, x1);        /* b3 = x6 * W6 + x1; */    \
+    cnst = LD_W7;                                                   \
+    b1 = vec_madd(cnst, x7, x0);        /* b1 = x7 * W7 + x0; */    \
+                                                                    \
+    b7 = vec_add(b7, x2);               /* b7 = b7 + x2; */         \
+    b5 = vec_add(b5, x3);               /* b5 = b5 + x3; */         \
+    b3 = vec_add(b3, x2);               /* b3 = b3 + x2; */         \
+    b1 = vec_add(b1, x3);               /* b1 = b1 + x3; */         \
+    /* }}} */
+
+#define FDCTCOL(b0,b1,b2,b3,b4,b5,b6,b7) /* {{{ */                  \
+    x0 = vec_add(b0, b7);               /* x0 = b0 + b7; */         \
+    x7 = vec_sub(b0, b7);               /* x7 = b0 - b7; */         \
+    x1 = vec_add(b1, b6);               /* x1 = b1 + b6; */         \
+    x6 = vec_sub(b1, b6);               /* x6 = b1 - b6; */         \
+    x2 = vec_add(b2, b5);               /* x2 = b2 + b5; */         \
+    x5 = vec_sub(b2, b5);               /* x5 = b2 - b5; */         \
+    x3 = vec_add(b3, b4);               /* x3 = b3 + b4; */         \
+    x4 = vec_sub(b3, b4);               /* x4 = b3 - b4; */         \
+                                                                    \
+    b7 = vec_add(x0, x3);               /* b7 = x0 + x3; */         \
+    b1 = vec_add(x1, x2);               /* b1 = x1 + x2; */         \
+    b0 = vec_add(b7, b1);               /* b0 = b7 + b1; */         \
+    b4 = vec_sub(b7, b1);               /* b4 = b7 - b1; */         \
+                                                                    \
+    b2 = vec_sub(x0, x3);               /* b2 = x0 - x3; */         \
+    b6 = vec_sub(x1, x2);               /* b6 = x1 - x2; */         \
+    b5 = vec_add(b6, b2);               /* b5 = b6 + b2; */         \
+    cnst = LD_W2;                                                   \
+    b5 = vec_madd(cnst, b5, mzero);     /* b5 = b5 * W2; */         \
+    cnst = LD_W1;                                                   \
+    b2 = vec_madd(cnst, b2, b5);        /* b2 = b5 + b2 * W1; */    \
+    cnst = LD_W0;                                                   \
+    b6 = vec_madd(cnst, b6, b5);        /* b6 = b5 + b6 * W0; */    \
+                                                                    \
+    x0 = vec_add(x4, x7);               /* x0 = x4 + x7; */         \
+    x1 = vec_add(x5, x6);               /* x1 = x5 + x6; */         \
+    x2 = vec_add(x4, x6);               /* x2 = x4 + x6; */         \
+    x3 = vec_add(x5, x7);               /* x3 = x5 + x7; */         \
+    x8 = vec_add(x2, x3);               /* x8 = x2 + x3; */         \
+    cnst = LD_W3;                                                   \
+    x8 = vec_madd(cnst, x8, mzero);     /* x8 = x8 * W3; */         \
+                                                                    \
+    cnst = LD_W8;                                                   \
+    x0 = vec_madd(cnst, x0, mzero);     /* x0 *= W8; */             \
+    cnst = LD_W9;                                                   \
+    x1 = vec_madd(cnst, x1, mzero);     /* x1 *= W9; */             \
+    cnst = LD_WA;                                                   \
+    x2 = vec_madd(cnst, x2, x8);        /* x2 = x2 * WA + x8; */    \
+    cnst = LD_WB;                                                   \
+    x3 = vec_madd(cnst, x3, x8);        /* x3 = x3 * WB + x8; */    \
+                                                                    \
+    cnst = LD_W4;                                                   \
+    b7 = vec_madd(cnst, x4, x0);        /* b7 = x4 * W4 + x0; */    \
+    cnst = LD_W5;                                                   \
+    b5 = vec_madd(cnst, x5, x1);        /* b5 = x5 * W5 + x1; */    \
+    cnst = LD_W6;                                                   \
+    b3 = vec_madd(cnst, x6, x1);        /* b3 = x6 * W6 + x1; */    \
+    cnst = LD_W7;                                                   \
+    b1 = vec_madd(cnst, x7, x0);        /* b1 = x7 * W7 + x0; */    \
+                                                                    \
+    b7 = vec_add(b7, x2);               /* b7 += x2; */             \
+    b5 = vec_add(b5, x3);               /* b5 += x3; */             \
+    b3 = vec_add(b3, x2);               /* b3 += x2; */             \
+    b1 = vec_add(b1, x3);               /* b1 += x3; */             \
+    /* }}} */
+
+
+
+/* two dimensional discrete cosine transform */
+
+void fdct_altivec(int16_t *block)
+{
+POWERPC_PERF_DECLARE(altivec_fdct, 1);
+#ifdef ALTIVEC_USE_REFERENCE_C_CODE
+POWERPC_PERF_START_COUNT(altivec_fdct, 1);
+    void ff_jpeg_fdct_islow(int16_t *block);
+    ff_jpeg_fdct_islow(block);
+POWERPC_PERF_STOP_COUNT(altivec_fdct, 1);
+#else /* ALTIVEC_USE_REFERENCE_C_CODE */
+    vector signed short *bp;
+    vector float *cp;
+    vector float b00, b10, b20, b30, b40, b50, b60, b70;
+    vector float b01, b11, b21, b31, b41, b51, b61, b71;
+    vector float mzero, cnst, cnsts0, cnsts1, cnsts2;
+    vector float x0, x1, x2, x3, x4, x5, x6, x7, x8;
+
+    POWERPC_PERF_START_COUNT(altivec_fdct, 1);
+
+
+    /* setup constants {{{ */
+    /* mzero = -0.0 */
+    vu32(mzero) = vec_splat_u32(-1);
+    vu32(mzero) = vec_sl(vu32(mzero), vu32(mzero));
+    cp = fdctconsts;
+    cnsts0 = vec_ld(0, cp); cp++;
+    cnsts1 = vec_ld(0, cp); cp++;
+    cnsts2 = vec_ld(0, cp);
+    /* }}} */
+
+
+    /* 8x8 matrix transpose (vector short[8]) {{{ */
+#define MERGE_S16(hl,a,b) vec_merge##hl(vs16(a), vs16(b))
+
+    bp = (vector signed short*)block;
+    vs16(b00) = vec_ld(0,    bp);
+    vs16(b40) = vec_ld(16*4, bp);
+    vs16(b01) = MERGE_S16(h, b00, b40);
+    vs16(b11) = MERGE_S16(l, b00, b40);
+    bp++;
+    vs16(b10) = vec_ld(0,    bp);
+    vs16(b50) = vec_ld(16*4, bp);
+    vs16(b21) = MERGE_S16(h, b10, b50);
+    vs16(b31) = MERGE_S16(l, b10, b50);
+    bp++;
+    vs16(b20) = vec_ld(0,    bp);
+    vs16(b60) = vec_ld(16*4, bp);
+    vs16(b41) = MERGE_S16(h, b20, b60);
+    vs16(b51) = MERGE_S16(l, b20, b60);
+    bp++;
+    vs16(b30) = vec_ld(0,    bp);
+    vs16(b70) = vec_ld(16*4, bp);
+    vs16(b61) = MERGE_S16(h, b30, b70);
+    vs16(b71) = MERGE_S16(l, b30, b70);
+
+    vs16(x0) = MERGE_S16(h, b01, b41);
+    vs16(x1) = MERGE_S16(l, b01, b41);
+    vs16(x2) = MERGE_S16(h, b11, b51);
+    vs16(x3) = MERGE_S16(l, b11, b51);
+    vs16(x4) = MERGE_S16(h, b21, b61);
+    vs16(x5) = MERGE_S16(l, b21, b61);
+    vs16(x6) = MERGE_S16(h, b31, b71);
+    vs16(x7) = MERGE_S16(l, b31, b71);
+
+    vs16(b00) = MERGE_S16(h, x0, x4);
+    vs16(b10) = MERGE_S16(l, x0, x4);
+    vs16(b20) = MERGE_S16(h, x1, x5);
+    vs16(b30) = MERGE_S16(l, x1, x5);
+    vs16(b40) = MERGE_S16(h, x2, x6);
+    vs16(b50) = MERGE_S16(l, x2, x6);
+    vs16(b60) = MERGE_S16(h, x3, x7);
+    vs16(b70) = MERGE_S16(l, x3, x7);
+
+#undef MERGE_S16
+    /* }}} */
+
+
+/* Some of the initial calculations can be done as vector short before
+ * conversion to vector float.  The following code section takes advantage
+ * of this.
+ */
+#if 1
+    /* fdct rows {{{ */
+    vs16(x0) = vec_add(vs16(b00), vs16(b70));
+    vs16(x7) = vec_sub(vs16(b00), vs16(b70));
+    vs16(x1) = vec_add(vs16(b10), vs16(b60));
+    vs16(x6) = vec_sub(vs16(b10), vs16(b60));
+    vs16(x2) = vec_add(vs16(b20), vs16(b50));
+    vs16(x5) = vec_sub(vs16(b20), vs16(b50));
+    vs16(x3) = vec_add(vs16(b30), vs16(b40));
+    vs16(x4) = vec_sub(vs16(b30), vs16(b40));
+
+    vs16(b70) = vec_add(vs16(x0), vs16(x3));
+    vs16(b10) = vec_add(vs16(x1), vs16(x2));
+
+    vs16(b00) = vec_add(vs16(b70), vs16(b10));
+    vs16(b40) = vec_sub(vs16(b70), vs16(b10));
+
+#define CTF0(n) \
+    vs32(b##n##1) = vec_unpackl(vs16(b##n##0)); \
+    vs32(b##n##0) = vec_unpackh(vs16(b##n##0)); \
+    b##n##1 = vec_ctf(vs32(b##n##1), 0); \
+    b##n##0 = vec_ctf(vs32(b##n##0), 0);
+
+    CTF0(0);
+    CTF0(4);
+
+    vs16(b20) = vec_sub(vs16(x0), vs16(x3));
+    vs16(b60) = vec_sub(vs16(x1), vs16(x2));
+
+    CTF0(2);
+    CTF0(6);
+
+#undef CTF0
+
+    x0 = vec_add(b60, b20);
+    x1 = vec_add(b61, b21);
+
+    cnst = LD_W2;
+    x0 = vec_madd(cnst, x0, mzero);
+    x1 = vec_madd(cnst, x1, mzero);
+    cnst = LD_W1;
+    b20 = vec_madd(cnst, b20, x0);
+    b21 = vec_madd(cnst, b21, x1);
+    cnst = LD_W0;
+    b60 = vec_madd(cnst, b60, x0);
+    b61 = vec_madd(cnst, b61, x1);
+
+#define CTFX(x,b) \
+    vs32(b##0) = vec_unpackh(vs16(x)); \
+    vs32(b##1) = vec_unpackl(vs16(x)); \
+    b##0 = vec_ctf(vs32(b##0), 0); \
+    b##1 = vec_ctf(vs32(b##1), 0); \
+
+    CTFX(x4, b7);
+    CTFX(x5, b5);
+    CTFX(x6, b3);
+    CTFX(x7, b1);
+
+#undef CTFX
+
+
+    x0 = vec_add(b70, b10);
+    x1 = vec_add(b50, b30);
+    x2 = vec_add(b70, b30);
+    x3 = vec_add(b50, b10);
+    x8 = vec_add(x2, x3);
+    cnst = LD_W3;
+    x8 = vec_madd(cnst, x8, mzero);
+
+    cnst = LD_W8;
+    x0 = vec_madd(cnst, x0, mzero);
+    cnst = LD_W9;
+    x1 = vec_madd(cnst, x1, mzero);
+    cnst = LD_WA;
+    x2 = vec_madd(cnst, x2, x8);
+    cnst = LD_WB;
+    x3 = vec_madd(cnst, x3, x8);
+
+    cnst = LD_W4;
+    b70 = vec_madd(cnst, b70, x0);
+    cnst = LD_W5;
+    b50 = vec_madd(cnst, b50, x1);
+    cnst = LD_W6;
+    b30 = vec_madd(cnst, b30, x1);
+    cnst = LD_W7;
+    b10 = vec_madd(cnst, b10, x0);
+
+    b70 = vec_add(b70, x2);
+    b50 = vec_add(b50, x3);
+    b30 = vec_add(b30, x2);
+    b10 = vec_add(b10, x3);
+
+
+    x0 = vec_add(b71, b11);
+    x1 = vec_add(b51, b31);
+    x2 = vec_add(b71, b31);
+    x3 = vec_add(b51, b11);
+    x8 = vec_add(x2, x3);
+    cnst = LD_W3;
+    x8 = vec_madd(cnst, x8, mzero);
+
+    cnst = LD_W8;
+    x0 = vec_madd(cnst, x0, mzero);
+    cnst = LD_W9;
+    x1 = vec_madd(cnst, x1, mzero);
+    cnst = LD_WA;
+    x2 = vec_madd(cnst, x2, x8);
+    cnst = LD_WB;
+    x3 = vec_madd(cnst, x3, x8);
+
+    cnst = LD_W4;
+    b71 = vec_madd(cnst, b71, x0);
+    cnst = LD_W5;
+    b51 = vec_madd(cnst, b51, x1);
+    cnst = LD_W6;
+    b31 = vec_madd(cnst, b31, x1);
+    cnst = LD_W7;
+    b11 = vec_madd(cnst, b11, x0);
+
+    b71 = vec_add(b71, x2);
+    b51 = vec_add(b51, x3);
+    b31 = vec_add(b31, x2);
+    b11 = vec_add(b11, x3);
+    /* }}} */
+#else
+    /* convert to float {{{ */
+#define CTF(n) \
+    vs32(b##n##1) = vec_unpackl(vs16(b##n##0)); \
+    vs32(b##n##0) = vec_unpackh(vs16(b##n##0)); \
+    b##n##1 = vec_ctf(vs32(b##n##1), 0); \
+    b##n##0 = vec_ctf(vs32(b##n##0), 0); \
+
+    CTF(0);
+    CTF(1);
+    CTF(2);
+    CTF(3);
+    CTF(4);
+    CTF(5);
+    CTF(6);
+    CTF(7);
+
+#undef CTF
+    /* }}} */
+
+    FDCTROW(b00, b10, b20, b30, b40, b50, b60, b70);
+    FDCTROW(b01, b11, b21, b31, b41, b51, b61, b71);
+#endif
+
+
+    /* 8x8 matrix transpose (vector float[8][2]) {{{ */
+    x0 = vec_mergel(b00, b20);
+    x1 = vec_mergeh(b00, b20);
+    x2 = vec_mergel(b10, b30);
+    x3 = vec_mergeh(b10, b30);
+
+    b00 = vec_mergeh(x1, x3);
+    b10 = vec_mergel(x1, x3);
+    b20 = vec_mergeh(x0, x2);
+    b30 = vec_mergel(x0, x2);
+
+    x4 = vec_mergel(b41, b61);
+    x5 = vec_mergeh(b41, b61);
+    x6 = vec_mergel(b51, b71);
+    x7 = vec_mergeh(b51, b71);
+
+    b41 = vec_mergeh(x5, x7);
+    b51 = vec_mergel(x5, x7);
+    b61 = vec_mergeh(x4, x6);
+    b71 = vec_mergel(x4, x6);
+
+    x0 = vec_mergel(b01, b21);
+    x1 = vec_mergeh(b01, b21);
+    x2 = vec_mergel(b11, b31);
+    x3 = vec_mergeh(b11, b31);
+
+    x4 = vec_mergel(b40, b60);
+    x5 = vec_mergeh(b40, b60);
+    x6 = vec_mergel(b50, b70);
+    x7 = vec_mergeh(b50, b70);
+
+    b40 = vec_mergeh(x1, x3);
+    b50 = vec_mergel(x1, x3);
+    b60 = vec_mergeh(x0, x2);
+    b70 = vec_mergel(x0, x2);
+
+    b01 = vec_mergeh(x5, x7);
+    b11 = vec_mergel(x5, x7);
+    b21 = vec_mergeh(x4, x6);
+    b31 = vec_mergel(x4, x6);
+    /* }}} */
+
+
+    FDCTCOL(b00, b10, b20, b30, b40, b50, b60, b70);
+    FDCTCOL(b01, b11, b21, b31, b41, b51, b61, b71);
+
+
+    /* round, convert back to short {{{ */
+#define CTS(n) \
+    b##n##0 = vec_round(b##n##0); \
+    b##n##1 = vec_round(b##n##1); \
+    vs32(b##n##0) = vec_cts(b##n##0, 0); \
+    vs32(b##n##1) = vec_cts(b##n##1, 0); \
+    vs16(b##n##0) = vec_pack(vs32(b##n##0), vs32(b##n##1)); \
+    vec_st(vs16(b##n##0), 0, bp);
+
+    bp = (vector signed short*)block;
+    CTS(0); bp++;
+    CTS(1); bp++;
+    CTS(2); bp++;
+    CTS(3); bp++;
+    CTS(4); bp++;
+    CTS(5); bp++;
+    CTS(6); bp++;
+    CTS(7);
+
+#undef CTS
+    /* }}} */
+
+POWERPC_PERF_STOP_COUNT(altivec_fdct, 1);
+#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
+}
+
+/* vim:set foldmethod=marker foldlevel=0: */