gcc/testsuite/gcc.dg/tree-ssa/20040204-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 extern void link_error (void);
   5
   6 /*
   7   test that a condition  is propagated  inside an if
   8 */
   9
  10 void test5 (int x)
  11 {
  12   extern int foo (int);
  13   if (x == 0)
  14     foo (x);
  15   else if (x == 0 )
  16     link_error ();
  17 }
  18
  19 void test55 (int x, int y)
  20 {
  21   int u;
  22   if (x == 5 && y)
  23     {
  24       u = x + 22;
  25       if (u != 27)
  26         link_error ();
  27     }
  28 }
  29
  30 /* There should be not link_error calls, if there is any the
  31    optimization has failed */
  32 /* ??? Ug.  This one may or may not fail based on how fold decides
  33    that the && should be emitted (based on BRANCH_COST).  Fix this
  34    by teaching dom to look through && and register all components
  35    as true.  */
  36 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" { xfail *-*-* } } } */