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/* { dg-do compile } */

/* { dg-options "-O1 -fdump-tree-dom2" } */

extern void abort (void);

union tree_node;

typedef union tree_node *tree;

enum tree_code

{

  TREE_VEC = 20,

};

struct tree_common

{

  int code;

};

struct tree_type

{

  tree binfo;

};

union tree_node

{

  struct tree_common common;

  struct tree_type type;

};

void

record_component_aliases (type)

     tree type;

{

  const tree __z = type->type.binfo;

  if (type->type.binfo->common.code != TREE_VEC)

    abort ();

  if (__z->common.code != TREE_VEC)

    abort ();

}

/* There should be precisely one load of type.binfo.  If there is

   more than one, then the dominator optimizations failed.  */

/* { dg-final { scan-tree-dump-times "type\\.binfo" 1 "dom2"} } */

/* There should be precisely one load of common.code.  If there is

   more than one, then the dominator optimizations failed.  */

/* { dg-final { scan-tree-dump-times "common\\.code" 1 "dom2"} } */

/* There should be one IF conditional.  */

/* { dg-final { scan-tree-dump-times "if " 1 "dom2"} } */

/* { dg-final { cleanup-tree-dump "dom2" } } */