re PR target/48673 (GCC generates WAW and RAW conflicts on IA64.)

	PR target/48673
	* config/ia64/ia64.c (ia64_reorg): Clear BB_DISABLE_SCHEDULE flag
	in all basic blocks.

From-SVN: r174844

gcc/ChangeLog

+2011-06-09  Bernd Schmidt  <bernds@codesourcery.com>
+
+	PR target/48673
+	* config/ia64/ia64.c (ia64_reorg): Clear BB_DISABLE_SCHEDULE flag
+	in all basic blocks.
+
 2011-06-09  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* config/alpha/netbsd.h (ENABLE_EXECUTE_STACK): Remove.

gcc/config/ia64/ia64.c

@@ -9394,9 +9394,15 @@ ia64_reorg (void)
   if (optimize && flag_schedule_insns_after_reload
       && dbg_cnt (ia64_sched2))
     {
+      basic_block bb;
       timevar_push (TV_SCHED2);
       ia64_final_schedule = 1;
 
+      /* We can't let modulo-sched prevent us from scheduling any bbs,
+	 since we need the final schedule to produce bundle information.  */
+      FOR_EACH_BB (bb)
+	bb->flags &= ~BB_DISABLE_SCHEDULE;
+
       initiate_bundle_states ();
       ia64_nop = make_insn_raw (gen_nop ());
       PREV_INSN (ia64_nop) = NEXT_INSN (ia64_nop) = NULL_RTX;