[Bug tree-optimization/25644] New: Not vectorizing F90 array expressions

[pinskia at gcc dot gnu dot org]

Fortran Testcase:
subroutine sub(a, b, c, n); dimension a(n), b(n), c(n); if (n<=0) return;c = a
+ b; end

C testcase:
int a[1000], b[1000], c[1000];

void sub (int n)
{
  if (n <= 0)
    return;
  int i = 1;
  do {
    a[i-1] = b[i-1]+c[i-1];
    i++;
  } while (i <= n);
}

---------

t.c:11: note: not vectorized: number of iterations cannot be computed.
t.f90:1: note: not vectorized: number of iterations cannot be computed.


-- 
           Summary: Not vectorizing F90 array expressions
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25644