gcc/testsuite/gcc.dg/tree-ssa/20040430-1.c

   1 /* PR middle-end/14470.  Similar to
   2    gcc.c-torture/execute/20040313-1.c, but with a compile time test to
   3    make sure the second if() is removed.  */
   4 /* Update: We now remove both ifs.  Whee. */
   5
   6 /* { dg-do run } */
   7 /* { dg-options "-O2 -fdump-tree-optimized" } */
   8
   9
  10 extern void abort(void);
  11
  12 int main()
  13 {
  14   int t[1025] = { 1024 }, d;
  15
  16   d = 0;
  17   d = t[d]++;
  18   if (t[0] != 1025)
  19     abort();
  20   if (d != 1024)
  21     abort();
  22   return 0;
  23 }
  24
  25 /* { dg-final { scan-tree-dump-times "if " 0 "optimized"} } */
  26 /* { dg-final { cleanup-tree-dump "optimized" } } */