gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-19.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-sink1-details -fdump-tree-cddce2-details" } */
   3
   4 static int b=4;
   5 int c;
   6
   7 int
   8 main()
   9 {
  10   int e[5] = {1,1,1,1,1};
  11   for (; b >= 0; b--) {
  12     c = e[b];
  13   }
  14   return 0;
  15 }
  16
  17 /* We should sink e[b] out of the loop which is possible after
  18    applying store motion to c and b.  */
  19 /* { dg-final { scan-tree-dump "Sinking # VUSE" "sink1" } } */
  20 /* And remove the loop after final value replacement.  */
  21 /* { dg-final { scan-tree-dump "fix_loop_structure: removing loop" "cddce2" } } */