[LCG] Add the really, *really* boring edge insertion case: adding an

edge entirely within an existing SCC. Shockingly, making the connected
component more connected is ... a total snooze fest. =]

Anyways, its wired up, and I even added a test case to make sure it
pretty much sorta works. =D

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207631 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/include/llvm/Analysis/LazyCallGraph.h b/include/llvm/Analysis/LazyCallGraph.h
index df3925aba6..2b391e0476 100644
--- a/include/llvm/Analysis/LazyCallGraph.h
+++ b/include/llvm/Analysis/LazyCallGraph.h
@@ -186,6 +186,9 @@ public:
     /// \brief Internal helper to insert a callee.
     void insertEdgeInternal(Function &Callee);
 
+    /// \brief Internal helper to insert a callee.
+    void insertEdgeInternal(Node &CalleeN);
+
     /// \brief Internal helper to remove a callee from this node.
     void removeEdgeInternal(Function &Callee);
 
@@ -249,6 +252,12 @@ public:
     /// Note that these methods sometimes have complex runtimes, so be careful
     /// how you call them.
 
+    /// \brief Insert an edge from one node in this SCC to another in this SCC.
+    ///
+    /// By the definition of an SCC, this does not change the nature or make-up
+    /// of any SCCs.
+    void insertIntraSCCEdge(Node &CallerN, Node &CalleeN);
+
     /// \brief Remove an edge whose source is in this SCC and target is *not*.
     ///
     /// This removes an inter-SCC edge. All inter-SCC edges originating from