sel-sched-ir.c (invalidate_av_set): Remove the assert.

2011-08-11  Dmitry Melnik  <dm@ispras.ru>

	* sel-sched-ir.c (invalidate_av_set): Remove the assert.

From-SVN: r177659

gcc/ChangeLog

+2011-08-11  Dmitry Melnik  <dm@ispras.ru>
+
+	* sel-sched-ir.c (invalidate_av_set): Remove the assert.
+
+2011-08-11  Sergey Grechanik  <mouseentity@ispras.ru>
+
+	* sel-sched-ir.h (register_unavailable_p): Declare.
+	* sel-sched-ir.c (register_unavailable_p): New.  Use it...
+	(set_unavailable_target_for_expr): ... here to properly test
+	availability of a register.
+	(speculate_expr): Ditto.
+	* sel-sched.c (substitute_reg_in_expr): Ditto.
+	(av_set_could_be_blocked_by_bookkeeping_p): Ditto.
+
 2011-08-11  Sergey Grechanik  <mouseentity@ispras.ru>
 
 	* sel-sched-ir.c (has_dependence_note_reg_use): Call ds_full_merge