File: pr83857.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (29 lines) | stat: -rw-r--r-- 562 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
/* { dg-additional-options "-ffast-math" } */

#define N 100

double __attribute__ ((noinline, noclone))
f (double *x, double y)
{
  double a = 0;
  for (int i = 0; i < N; ++i)
    {
      a += y;
      x[i * 2] += a;
      x[i * 2 + 1] += a;
    }
  return a - y;
}

double x[N * 2];

int
main (void)
{
  if (f (x, 5) != (N - 1) * 5)
    __builtin_abort ();
  return 0;
}

/* { dg-final { scan-tree-dump "Loop contains only SLP stmts" "vect" { target vect_double } } } */
/* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" { target vect_double } } } */