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/* { dg-do compile } */

/* { dg-options "-O2 -fdump-tree-cddce2" } */

struct rtx_def;

typedef struct rtx_def *rtx;

union tree_node;

typedef union tree_node *tree;

typedef struct mem_attrs

{

  int  foo;

} mem_attrs;

union rtunion_def

{

  mem_attrs *rtmem;

};

typedef union rtunion_def rtunion;

struct rtx_def

{

  rtunion fld[1];

};

struct tree_decl

{

  rtx rtl;

};

union tree_node

{

  struct tree_decl decl;

};

void *

get_alias_set (t)

     tree t;

{

  long set;

  if (t->decl.rtl)

    return (t->decl.rtl->fld[1].rtmem

            ? 0

            : (((t->decl.rtl ? t->decl.rtl: (make_decl_rtl (t, 0), t->decl.rtl)))->fld[1]).rtmem);

  return (void*)-1;

}

/* There should be precisely one load of ->decl.rtl.  If there is

   more than, then the dominator optimizations failed.  */

/* { dg-final { scan-tree-dump-times "->decl\\.rtl" 1 "cddce2"} } */

/* There should be no loads of .rtmem since the complex return statement

   is just "return 0".  */

/* { dg-final { scan-tree-dump-times ".rtmem" 0 "cddce2"} } */

/* There should be one IF statement (the complex return statement should

   collapse down to a simple return 0 without any conditionals).  */

/* { dg-final { scan-tree-dump-times "if " 1 "cddce2"} } */

/* { dg-final { cleanup-tree-dump "cddce2" } } */