gcc/testsuite/gcc.dg/pr17055-1.c

   1 /* PR middle-end/17055.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -ffast-math" } */
   4 /* { dg-additional-options "-fno-common" { target hppa*-*-hpux* } } */
   5
   6 /* This test used to abort, because we do an "integer" fold to zero, i.e.
   7    x - x = (T)0 where T is the type of x.  Unfortunately, fold_convert
   8    was unable to convert integer_zero_node to the appropriate vector type.  */
   9
  10 typedef float v4sf __attribute__((vector_size(16)));
  11 typedef int v4si __attribute__((vector_size(16)));
  12
  13 v4sf ivf, ovf;
  14 v4si ivi, ovi;
  15
  16 void testf (void)
  17 {
  18   ovf = ivf - ivf;
  19 }
  20
  21 void testi (void)
  22 {
  23   ovi = ivi - ivi;
  24 }
  25