gcc/testsuite/gcc.target/s390/20200617.c

   1 /* This ICE'd before f9e1ea10e657af9fb02fafecf1a600740fd34409 because
   2    a doloop pattern with a dead set of the iteration variable was
   3    generated and s390_fix_long_loop_prediction then failed to
   4    recognize it as branch on count pattern.  */
   5
   6 /* { dg-do compile } */
   7 /* { dg-options "-O3 -march=z10" } */
   8
   9 int a, d, e, f;
  10 long b;
  11 long *volatile c;
  12 void
  13 fn1() {
  14   for (; e; ++e)
  15     if (d)
  16       ;
  17     else {
  18       a = 0;
  19       for (; a != 14; ++a)
  20         *c = b && f;
  21       d = 8;
  22     }
  23 }