Add new BreakCriticalEdges pass

llvm-svn: 3902

llvm/include/llvm/Transforms/Scalar.h

@@ -175,6 +175,16 @@ Pass *createCorrelatedExpressionEliminationPass();
 //
 Pass *createCFGSimplificationPass();
 
+//===----------------------------------------------------------------------===//
+//
+// BreakCriticalEdges pass - Break all of the critical edges in the CFG by
+// inserting a dummy basic block.  This pass may be "required" by passes that
+// cannot deal with critical edges.  For this usage, the structure type is
+// forward declared.  This pass obviously invalidates the CFG, but can update
+// forward dominator (set, immediate dominators, and tree) information.
+//
+class BreakCriticalEdges;
+Pass *createBreakCriticalEdgesPass();
 
 //===----------------------------------------------------------------------===//
 // These two passes convert malloc and free instructions to and from %malloc &