Viewing file:  vect-reduc-dot-s8a.c (1.72 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-require-effective-target vect_int } */
/* { dg-require-effective-target arm_v8_2a_dotprod_neon_hw { target { aarch64*-*-* || arm*-*-* } } } */
/* { dg-additional-options "-march=armv8.2-a+dotprod" { target { aarch64*-*-* } } } */
/* { dg-add-options arm_v8_2a_dotprod_neon } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 64
#define DOT1 43680
signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
/* char->short->int dot product.
The dot-product pattern should be detected.
Vectorizable on vect_sdot_qi targets (targets that support dot-product of
signed chars).
In the future could also be vectorized as widening-mult + widening-summation,
or with type-conversion support.
*/
__attribute__ ((noinline)) int
foo1(int len) {
int i;
int result = 0;
short prod;
for (i=0; i<len; i++) {
prod = X[i] * Y[i];
result += prod;
}
return result;
}
int main (void)
{
int i, dot1;
check_vect ();
for (i=0; i<N; i++) {
X[i] = i;
Y[i] = 64-i;
__asm__ volatile ("");
}
dot1 = foo1 (N);
if (dot1 != DOT1)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_sdot_qi } } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_widen_mult_qi_to_hi && vect_widen_sum_hi_to_si } } } } */
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