re PR middle-end/37730 (gcc.c-torture/compile/pr37713.c ICEs at -O3 -msse2)

	PR middle-end/37730
	* expr.c (store_constructor): For vectors, if target is a MEM, use
	target's MEM_ALIAS_SET instead of elttype alias set.

	* gcc.dg/vect/pr37730.c: New test.

From-SVN: r141461

gcc/ChangeLog

+2008-10-30  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/37730
+	* expr.c (store_constructor): For vectors, if target is a MEM, use
+	target's MEM_ALIAS_SET instead of elttype alias set.
+
 2008-10-29  Kaz Kojima  <kkojima@gcc.gnu.org>
 
 	PR target/37909

gcc/expr.c

@@ -5579,6 +5579,7 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
 	HOST_WIDE_INT bitpos;
 	rtvec vector = NULL;
 	unsigned n_elts;
+	alias_set_type alias;
 
 	gcc_assert (eltmode != BLKmode);
 
@@ -5630,7 +5631,7 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
 	if (need_to_clear && size > 0 && !vector)
 	  {
 	    if (REG_P (target))
-	      emit_move_insn (target,  CONST0_RTX (GET_MODE (target)));
+	      emit_move_insn (target, CONST0_RTX (GET_MODE (target)));
 	    else
 	      clear_storage (target, GEN_INT (size), BLOCK_OP_NORMAL);
 	    cleared = 1;
@@ -5640,6 +5641,11 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
 	if (!cleared && !vector && REG_P (target))
 	  emit_move_insn (target, CONST0_RTX (GET_MODE (target)));
 
+        if (MEM_P (target))
+	  alias = MEM_ALIAS_SET (target);
+	else
+	  alias = get_alias_set (elttype);
+
         /* Store each element of the constructor into the corresponding
 	   element of TARGET, determined by counting the elements.  */
 	for (idx = 0, i = 0;
@@ -5675,7 +5681,7 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
 		bitpos = eltpos * elt_size;
 		store_constructor_field (target, bitsize, bitpos,
 					 value_mode, value, type,
-					 cleared, get_alias_set (elttype));
+					 cleared, alias);
 	      }
 	  }
 

gcc/testsuite/ChangeLog

 2008-10-30  Jakub Jelinek  <jakub@redhat.com>
 
+	PR middle-end/37730
+	* gcc.dg/vect/pr37730.c: New test.
+
 	PR debug/36668
 	* g++.dg/other/PR23205.C: Allow foobar to be defined as variable.
 	* g++.dg/other/pr23205-2.C: New test.

gcc/testsuite/gcc.dg/vect/pr37730.c

+/* PR middle-end/37730 */
+/* { dg-do compile } */
+
+void
+add_opush (void)
+{
+  unsigned char formats[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xff };
+  void *dtds[sizeof (formats)];
+  unsigned int i;
+  unsigned char dtd = 0x08;
+  for (i = 0; i < sizeof (formats); i++)
+    dtds[i] = &dtd;
+  sdp_seq_alloc (dtds);
+}
+
+/* { dg-final { cleanup-tree-dump "vect" } } */