use macro Use DECLARE_ALIGNED_16 to align stack-allocated variables

instead of compiler-dependent  __attribute__((aligned(16)))
Origiginal thread:
Date: May 17, 2007 12:30 AM
Subject: [PATCH] Use DECLARE_ALIGNED_16 in libavcodec/ppc/

Originally committed as revision 9047 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/ppc/dsputil_altivec.c

@@ -56,7 +56,7 @@ static void sigill_handler (int sig)
 int sad16_x2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
     vector unsigned char *tv;
     vector unsigned char pix1v, pix2v, pix2iv, avgv, t5;
@@ -103,7 +103,7 @@ int sad16_x2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h
 int sad16_y2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
     vector unsigned char *tv;
     vector unsigned char pix1v, pix2v, pix3v, avgv, t5;
@@ -163,7 +163,7 @@ int sad16_y2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h
 int sad16_xy2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     uint8_t *pix3 = pix2 + line_size;
     const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
     const_vector unsigned short two = (const_vector unsigned short)vec_splat_u16(2);
@@ -264,7 +264,7 @@ int sad16_xy2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int
 int sad16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
     vector unsigned char perm1, perm2, *pix1v, *pix2v;
     vector unsigned char t1, t2, t3,t4, t5;
@@ -306,7 +306,7 @@ int sad16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 int sad8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);;
     const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
     vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;
     vector unsigned char t1, t2, t3,t4, t5;
@@ -351,7 +351,7 @@ int sad8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 int pix_norm1_altivec(uint8_t *pix, int line_size)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
     vector unsigned char *tv;
     vector unsigned char pixv;
@@ -387,7 +387,7 @@ int pix_norm1_altivec(uint8_t *pix, int line_size)
 int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
     vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;
     vector unsigned char t1, t2, t3,t4, t5;
@@ -443,7 +443,7 @@ int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 int sse16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
     const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
     vector unsigned char perm1, perm2, *pix1v, *pix2v;
     vector unsigned char t1, t2, t3,t4, t5;
@@ -495,7 +495,7 @@ int pix_sum_altivec(uint8_t * pix, int line_size)
     vector signed int sumdiffs;
 
     int i;
-    int s __attribute__((aligned(16)));
+    DECLARE_ALIGNED_16(int, s);
 
     sad = (vector unsigned int)vec_splat_u32(0);
 

libavcodec/ppc/gmc_altivec.c

@@ -34,10 +34,10 @@
 void gmc1_altivec(uint8_t *dst /* align 8 */, uint8_t *src /* align1 */, int stride, int h, int x16, int y16, int rounder)
 {
 POWERPC_PERF_DECLARE(altivec_gmc1_num, GMC1_PERF_COND);
-    const unsigned short __attribute__ ((aligned(16))) rounder_a[8] =
+    const DECLARE_ALIGNED_16(unsigned short, rounder_a[8]) =
       {rounder, rounder, rounder, rounder,
        rounder, rounder, rounder, rounder};
-    const unsigned short __attribute__ ((aligned(16))) ABCD[8] =
+    const DECLARE_ALIGNED_16(unsigned short, ABCD[8]) =
       {
         (16-x16)*(16-y16), /* A */
         (   x16)*(16-y16), /* B */

libavcodec/ppc/h264_altivec.c

@@ -180,7 +180,7 @@ static void OPNAME ## h264_qpel ## SIZE ## _mc32_ ## CODETYPE(uint8_t *dst, uint
 
 /* this code assume that stride % 16 == 0 */
 void put_no_rnd_h264_chroma_mc8_altivec(uint8_t * dst, uint8_t * src, int stride, int h, int x, int y) {
-    signed int ABCD[4] __attribute__((aligned(16))) =
+   DECLARE_ALIGNED_16(signed int, ABCD[4]) =
                         {((8 - x) * (8 - y)),
                           ((x) * (8 - y)),
                           ((8 - x) * (y)),

libavcodec/ppc/h264_template_altivec.c

@@ -21,7 +21,7 @@
 /* this code assume that stride % 16 == 0 */
 void PREFIX_h264_chroma_mc8_altivec(uint8_t * dst, uint8_t * src, int stride, int h, int x, int y) {
   POWERPC_PERF_DECLARE(PREFIX_h264_chroma_mc8_num, 1);
-    signed int ABCD[4] __attribute__((aligned(16))) =
+    DECLARE_ALIGNED_16(signed int, ABCD[4]) =
                         {((8 - x) * (8 - y)),
                           ((x) * (8 - y)),
                           ((8 - x) * (y)),

libavcodec/ppc/mpegvideo_altivec.c

@@ -523,17 +523,17 @@ POWERPC_PERF_START_COUNT(altivec_dct_unquantize_h263_num, 1);
 
     {
       register const_vector signed short vczero = (const_vector signed short)vec_splat_s16(0);
-      short __attribute__ ((aligned(16))) qmul8[] =
+      DECLARE_ALIGNED_16(short, qmul8[]) =
           {
             qmul, qmul, qmul, qmul,
             qmul, qmul, qmul, qmul
           };
-      short __attribute__ ((aligned(16))) qadd8[] =
+      DECLARE_ALIGNED_16(short, qadd8[]) =
           {
             qadd, qadd, qadd, qadd,
             qadd, qadd, qadd, qadd
           };
-      short __attribute__ ((aligned(16))) nqadd8[] =
+      DECLARE_ALIGNED_16(short, nqadd8[]) =
           {
             -qadd, -qadd, -qadd, -qadd,
             -qadd, -qadd, -qadd, -qadd