Viewing file:  slp-reduc-sad-2.c (1.32 KB) -rw-r--r--
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/* Disabling epilogues until we find a better way to deal with scans. */
/* { dg-additional-options "--param vect-epilogues-nomask=0" } */
/* { dg-do compile } */
/* { dg-require-effective-target vect_usad_char } */
/* With AVX256 or more we do not pull off the trick eliding the epilogue. */
/* { dg-additional-options "-mprefer-avx128" { target { x86_64-*-* i?86-*-* } } } */
typedef unsigned char uint8_t;
int x264_pixel_sad_8x8( uint8_t *pix1, uint8_t *pix2, int i_stride_pix2 )
{
int i_sum = 0;
for( int y = 0; y < 8; y++ )
{
i_sum += __builtin_abs( pix1[0] - pix2[0] );
i_sum += __builtin_abs( pix1[1] - pix2[1] );
i_sum += __builtin_abs( pix1[2] - pix2[2] );
i_sum += __builtin_abs( pix1[3] - pix2[3] );
i_sum += __builtin_abs( pix1[4] - pix2[4] );
i_sum += __builtin_abs( pix1[5] - pix2[5] );
i_sum += __builtin_abs( pix1[6] - pix2[6] );
i_sum += __builtin_abs( pix1[7] - pix2[7] );
pix1 += 16;
pix2 += i_stride_pix2;
}
return i_sum;
}
/* { dg-final { scan-tree-dump "vect_recog_sad_pattern: detected" "vect" } } */
/* { dg-final { scan-tree-dump "vectorizing stmts using SLP" "vect" } } */
/* { dg-final { scan-tree-dump-not "access with gaps requires scalar epilogue loop" "vect" } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
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