On 09/18/2016 02:51 PM, Jan Hubicka wrote:


       to_rtx = expand_expr (tem, NULL_RTX, VOIDmode, EXPAND_WRITE);
-
-      /* If the field has a mode, we want to access it in the
-        field's mode, not the computed mode.
-        If a MEM has VOIDmode (external with incomplete type),
-        use BLKmode for it instead.  */
-      if (MEM_P (to_rtx))
-       {
-         if (mode1 != VOIDmode)
-           to_rtx = adjust_address (to_rtx, mode1, 0);
-         else if (GET_MODE (to_rtx) == VOIDmode)
-           to_rtx = adjust_address (to_rtx, BLKmode, 0);
-       }

       if (offset != 0)
        {

This was added by Jakub in r166603, referencing PR46388. Have you looked at that?


Bernd

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