gcc/testsuite/gcc.target/i386/pr61423.c

   1 /* PR target/61423 */
   2 /* { dg-do run { target ia32 } } */
   3 /* { dg-options "-O1 -ftree-vectorize -msse2 -mfpmath=387 -mtune=core2" } */
   4
   5 #define N 1024
   6 static unsigned int A[N];
   7
   8 double
   9 __attribute__((noinline))
  10 func (void)
  11 {
  12   unsigned int sum = 0;
  13   unsigned i;
  14   double t;
  15
  16   for (i = 0; i < N; i++)
  17     sum += A[i];
  18
  19   t = sum;
  20   return t;
  21 }
  22
  23 int
  24 main ()
  25 {
  26   unsigned i;
  27   double d;
  28
  29   for(i = 0; i < N; i++)
  30     A[i] = 1;
  31
  32   d = func();
  33
  34   if (d != 1024.0)
  35     __builtin_abort ();
  36
  37   return 0;
  38 }