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src/IceLoopAnalyzer.h

Index: src/IceLoopAnalyzer.h
diff --git a/src/IceLoopAnalyzer.h b/src/IceLoopAnalyzer.h
index 59917981c974b6196b6f04090310db4bebbc3107..328848a16788730e8c39d3752d835420fa80e74f 100644
--- a/src/IceLoopAnalyzer.h
+++ b/src/IceLoopAnalyzer.h
@@ -35,6 +35,10 @@ public:
   ///
   /// This only computes the loop nest depth within the function and does not
   /// take into account whether the function was called from within a loop.
+  // TODO(ascull): this currently uses a extension of Tarjan's algorithm with
+  // is bounded linear. ncbray suggests another algorithm which is linear in
+  // practice but not bounded linear. I think it also finds dominators.
+  // http://lenx.100871.net/papers/loop-SAS.pdf
   void computeLoopNestDepth();
 
 private:
@@ -88,8 +92,8 @@ private:
   using LoopNodePtrList =
       std::vector<LoopNode *, CfgLocalAllocator<LoopNode *>>;
 
-  /// Process the node as part as part of Tarjan's algorithm and return either
-  /// a node to recurse into or nullptr when the node has been fully processed.
+  /// Process the node as part as part of Tarjan's algorithm and return either a
+  /// node to recurse into or nullptr when the node has been fully processed.
   LoopNode *processNode(LoopNode &Node);
 
   /// The fuction to analyze for loops.

[Jim Stichnoth, 2015/09/16 00:01:29]

function

[ascull, 2015/09/16 18:30:09]

Done.