gcc/testsuite/gcc.dg/torture/pr110979.c

   1 /* { dg-do run } */
   2 /* { dg-additional-options "--param vect-partial-vector-usage=2" } */
   3
   4 #define FLT double
   5 #define N 20
   6
   7 __attribute__((noipa))
   8 FLT
   9 foo3 (FLT *a)
  10 {
  11   FLT sum = -0.0;
  12   for (int i = 0; i != N; i++)
  13     sum += a[i];
  14   return sum;
  15 }
  16
  17 int main()
  18 {
  19   FLT a[N];
  20   for (int i = 0; i != N; i++)
  21     a[i] = -0.0;
  22   if (!__builtin_signbit(foo3(a)))
  23     __builtin_abort();
  24   return 0;
  25 }