Viewing file:  vect-over-widen-19.c (1.3 KB) -rw-r--r--
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/* { dg-require-effective-target vect_int } */
/* { dg-require-effective-target vect_shift } */
/* { dg-require-effective-target vect_pack_trunc } */
/* { dg-require-effective-target vect_unpack } */
#include "tree-vect.h"
#define N 111
/* This shouldn't be treated as an over-widening operation: it's better
to reuse the extensions of di and ei for di + ei than to add them
as shorts and introduce a third extension. */
void __attribute__ ((noipa))
f (unsigned int *restrict a, unsigned int *restrict b,
unsigned int *restrict c, unsigned char *restrict d,
unsigned char *restrict e)
{
for (__INTPTR_TYPE__ i = 0; i < N; ++i)
{
unsigned int di = d[i];
unsigned int ei = e[i];
a[i] = di;
b[i] = ei;
c[i] = di + ei;
}
}
int
main (void)
{
check_vect ();
unsigned int a[N], b[N], c[N];
unsigned char d[N], e[N];
for (int i = 0; i < N; ++i)
{
d[i] = i * 2 + 3;
e[i] = i + 100;
asm volatile ("" ::: "memory");
}
f (a, b, c, d, e);
for (int i = 0; i < N; ++i)
if (a[i] != i * 2 + 3
|| b[i] != i + 100
|| c[i] != i * 3 + 103)
__builtin_abort ();
return 0;
}
/* { dg-final { scan-tree-dump-not {vect_recog_over_widening_pattern: detected} "vect" } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" } } */
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