gcc/testsuite/gcc.dg/tree-ssa/pr111456-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3 /* PR tree-optimization/111456 */
   4
   5 void foo(void);
   6 static int i;
   7 static int *j = &i;
   8 static signed char l;
   9 static void(a)(signed char) {}
  10 static short(b)(short c, short d) { return c - d; }
  11 static short(e)(short f, int g) {
  12     return f < 0 || g < 0 || g >= 32 ? f : f >> g;
  13 }
  14 static short(h)(short f, int g) { return g >= 2 ?: f >> g; }
  15 static signed char k(signed char m, short n) {
  16     short o;
  17     int *p = &i;
  18     if (!(((m) >= 1) && ((m) <= 1))) {
  19         __builtin_unreachable();
  20     }
  21     o = e(i, i);
  22     if (h(1, o))
  23         ;
  24     else {
  25         m = 0;
  26         for (; m >= -20; m = b(m, 9))
  27             if (a(i), n) {
  28                 if (*p)
  29                     ;
  30                 else
  31                     foo();
  32                 ;
  33             } else
  34                 return l;
  35     }
  36     return i;
  37 }
  38 int main() { k(0 <= 0 > *j, i); }
  39
  40
  41 /* { dg-final { scan-tree-dump-not "foo " "optimized" } } */
  42 /* { dg-final { scan-tree-dump "return 0;" "optimized" } } */
  43