+ int col = NO_COLOR;
+
+ /*
+ * Try to assign live out values colors which are not used by live
+ * in values.
+ */
+ if(is_live_out(block, irn)) {
+ bitset_copy(tmp_colors, colors);
+ bitset_andnot(tmp_colors, in_colors);
+ col = bitset_next_clear(tmp_colors, 0);
+ }
+
+ /* If a color is not yet assigned, do it now. */
+ if(!is_color(col))
+ col = bitset_next_clear(colors, 0);