gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-23.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-ccp1" } */
   3
   4 /* Make sure we propagate through POINTER_PLUS_EXPRs.  */
   5
   6 struct A {
   7   int i[2];
   8 } a;
   9
  10 int foo (void)
  11 {
  12   struct A *p = &a;
  13   int *q = (int *)p;
  14   int *x = q + 1;
  15   return *x;
  16 }
  17
  18 /* { dg-final { scan-tree-dump "MEM\\\[\\\(int \\\*\\\)&a \\\+ 4B\\\]" "ccp1" } } */
  19 /* { dg-final { cleanup-tree-dump "ccp1" } } */