Reworked branch adding in prologue. Added check for infinite loops which are not modulo scheduled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18419 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SparcV9/ModuloScheduling/ModuloScheduling.h b/lib/Target/SparcV9/ModuloScheduling/ModuloScheduling.h
index e1f8d9e..fa523d1 100644
--- a/lib/Target/SparcV9/ModuloScheduling/ModuloScheduling.h
+++ b/lib/Target/SparcV9/ModuloScheduling/ModuloScheduling.h
@@ -88,7 +88,7 @@
     void addReccurrence(std::vector<MSchedGraphNode*> &recurrence, int II, MSchedGraphNode*, MSchedGraphNode*);
 
     void computePartialOrder();
-    void computeSchedule();
+    bool computeSchedule();
     bool scheduleNode(MSchedGraphNode *node, 
 		      int start, int end);