Bad and Unknown are pinned instructions yet, speeding up code placement

[libfirm] / ir / ir / irflag.h

diff --git a/ir/ir/irflag.h b/ir/ir/irflag.h
index 69421ef..f0d004e 100644 (file)
--- a/ir/ir/irflag.h
+++ b/ir/ir/irflag.h
@@ -59,13 +59,16 @@ void set_opt_cse (int value);
  * If opt_global_cse == 1 and opt_cse == 1 perform intra procedure
  * constant subexpression elimination for floating nodes.  Intra
  * procedure cse gets the graph into state "floating".  It is necessary
- * to run pre/code motion to get the graph back into state "pinned".
+ * to run pre/code motion to get the graph back into state "op_pin_state_pinned".
  * right after a call to local_optimize with global cse turned on.
  * Default: opt_global_cse == 0.
  */
 void set_opt_global_cse (int value);
 
 /** Enables/Disables unreachable code elimination.
+ *
+ * If set, evaluate conditions of conditional branch and replace the
+ * branch with a Jmp/Bad Tuple.
  *
  * If opt_unreachable_code == 1 replace nodes (except Block,
  * Phi and Tuple) with a Bad predecessor by the Bad node.