* expr.c (move_by_pieces_1): Extend size before negation.

From-SVN: r49158

gcc/ChangeLog

+2002-01-23  Richard Henderson  <rth@redhat.com>
+
+	* expr.c (move_by_pieces_1): Extend size before negation.
+
 2002-01-23  Bob Wilson  <bob.wilson@acm.org>
 
 	* config/xtensa/elf.h: New file.

gcc/expr.c

@@ -1575,9 +1575,11 @@ move_by_pieces_1 (genfun, mode, data)
 	from1 = adjust_address (data->from, mode, data->offset);
 
       if (HAVE_PRE_DECREMENT && data->explicit_inc_to < 0)
-	emit_insn (gen_add2_insn (data->to_addr, GEN_INT (-size)));
+	emit_insn (gen_add2_insn (data->to_addr,
+				  GEN_INT (-(HOST_WIDE_INT)size)));
       if (HAVE_PRE_DECREMENT && data->explicit_inc_from < 0)
-	emit_insn (gen_add2_insn (data->from_addr, GEN_INT (-size)));
+	emit_insn (gen_add2_insn (data->from_addr,
+				  GEN_INT (-(HOST_WIDE_INT)size)));
 
       if (data->to)
 	emit_insn ((*genfun) (to1, from1));