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/* { dg-do compile } */
/* { dg-additional-options "-O3" } */
typedef unsigned char uint8_t;
typedef short int16_t;
void pixel_sub_wxh(int16_t * __restrict diff, uint8_t *pix1, uint8_t *pix2) {
for (int y = 0; y < 4; y++) {
for (int x = 0; x < 4; x++)
diff[x + y * 4] = pix1[x] - pix2[x];
pix1 += 16;
pix2 += 32;
}
}
/* We can vectorize this without peeling for gaps and thus without epilogue,
but the only thing we can reliably scan is the zero-padding trick for the
partial loads. */
/* { dg-final { scan-tree-dump-times "\{_\[0-9\]\+, 0" 6 "vect" { target vect64 } } } */
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