Viewing file:  pr20122.c (1.55 KB) -rw-r--r--
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/* { dg-require-effective-target vect_int } */
#include <stdarg.h>
#include "tree-vect.h"
short Kernshort[24] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
static void VecBug(short Kernel[8][24]) __attribute__((noinline));
static void VecBug2(short Kernel[8][24]) __attribute__((noinline));
/* Kernel may alias Kernshort - a global array.
Use versioning for aliasing. */
static void VecBug(short Kernel[8][24])
{
int k,i;
for (k = 0; k<8; k++)
for (i = 0; i<24; i++)
Kernshort[i] = Kernel[k][i];
}
/* Vectorizable: Kernshort2 is local. */
static void VecBug2(short Kernel[8][24])
{
int k,i;
short Kernshort2[24] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
for (k = 0; k<8; k++)
for (i = 0; i<24; i++)
Kernshort2[i] = Kernel[k][i];
for (k = 0; k<8; k++)
for (i = 0; i<24; i++)
if (Kernshort2[i] != Kernel[k][i])
abort ();
}
int main (int argc, char **argv)
{
check_vect ();
short Kernel[8][24];
int k,i;
for (k = 0; k<8; k++)
for (i = 0; i<24; i++)
{
Kernel[k][i] = 0;
/* Don't get into the game of versioning vs. peeling. */
__asm__ volatile ("" : : : "memory");
}
VecBug(Kernel);
VecBug2(Kernel);
return 0;
}
/* The loops in VecBug and VecBug2 require versioning for alignment. */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 2 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
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