gcc/testsuite/gcc.dg/tree-ssa/pr19431.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 /* We want this optimized as
   5 <bb 2>:
   6   if (k != 0) goto <L2>; else goto <L3>;
   7
   8 <L3>:;
   9   i1 = j1;
  10
  11 <L2>:;
  12   return i1;
  13
  14   This requires that i1 and j1 are changed into registers after they
  15   no longer have their address taken.  */
  16
  17 int f(int k, int i1, int j1)
  18 {
  19   int *f1;
  20   if(k)
  21    f1 = &i1;
  22   else
  23    f1 = &j1;
  24   return *f1;
  25 }
  26
  27 /* { dg-final { scan-tree-dump "\[^\r\n\]*_. = PHI <i1_\[^,\]*, j1_\[^>\]*>" "optimized" } } */