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/* { dg-do compile } */

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

extern void abort (void);

struct rtx_def;

typedef struct rtx_def *rtx;

struct rtx_def

{

  int code;

  unsigned int unchanging:1;

};

static rtx current_sym_addr;

int

foo ()

{

  if (current_sym_addr->code == 42

      && (({

               rtx _rtx = current_sym_addr;

               if (((_rtx)->code) != 42)

                 abort ();

               _rtx;}

           )->unchanging))

    return 0;

}

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

   more than, then the dominator optimizations failed.  */

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

/* There should be two IF statements.  One for 'current_sym_addr->code == 42'.

   The other one for '(EXPR)->unchanging'.  */

/* { dg-final { scan-tree-dump-times "if " 2 "dom2"} } */

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