gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-12.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1-details" } */
   3
   4 struct
   5 {
   6   int x;
   7   int y;
   8 } S[100];
   9
  10 int z[100];
  11
  12 int
  13 foo (int y)
  14 {
  15   int x;
  16
  17   S[5].x = 4;
  18   S[5].y = 0;
  19
  20   x = S[5].x;
  21
  22   return (x);
  23 }
  24
  25 /* { dg-final { scan-tree-dump "Replaced S\\\[5\\\].x with 4" "fre1" } } */