[Bug middle-end/65409] [4.8/4.9/5 Regression] ICE in store_field

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65409

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This looks redundant to me, the following is sufficient:

Index: expr.c
===================================================================
--- expr.c      (revision 221407)
+++ expr.c      (working copy)
@@ -6645,11 +6645,12 @@ store_field (rtx target, HOST_WIDE_INT b
          && mode != TYPE_MODE (TREE_TYPE (exp)))
        temp = convert_modes (mode, TYPE_MODE (TREE_TYPE (exp)), temp, 1);

-      /* If the modes of TEMP and TARGET are both BLKmode, both
-        must be in memory and BITPOS must be aligned on a byte
-        boundary.  If so, we simply do a block copy.  Likewise
-        for a BLKmode-like TARGET.  */
-      if (GET_MODE (temp) == BLKmode
+      /* If TEMP is not a PARALLEL (see below) and its mode and that of TARGET
+        are both BLKmode, both must be in memory and BITPOS must be aligned
+        on a byte boundary.  If so, we simply do a block copy.  Likewise for
+        a BLKmode-like TARGET.  */
+      if (GET_CODE (temp) != PARALLEL
+         && GET_MODE (temp) == BLKmode
          && (GET_MODE (target) == BLKmode
              || (MEM_P (target)
                  && GET_MODE_CLASS (GET_MODE (target)) == MODE_INT