ra: Clarify usage of ra_set_node_reg()

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2012-09-03 08:23:02 -04:00
parent 69b387fbdc
commit cfeb99c7da
1 changed files with 2 additions and 0 deletions
@@ -490,6 +490,8 @@ ra_get_node_reg(struct ra_graph *g, unsigned int n)
 * input data).  These nodes do not end up in the stack during
 * ra_simplify(), and thus at ra_select() time it is as if they were
 * the first popped off the stack and assigned their fixed locations.
+ * Nodes that use this function do not need to be assigned a register
+ * class.
 *
 * Must be called before ra_simplify().
 */