Factor out cycle-finder code and make it generic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71241 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 4 deletions

diff --git a/include/llvm/CodeGen/SelectionDAGISel.h b/include/llvm/CodeGen/SelectionDAGISel.h
index 05a047563a..d2c0dc420f 100644
--- a/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/include/llvm/CodeGen/SelectionDAGISel.h
@@ -88,10 +88,8 @@ public:
   /// U can be folded during instruction selection that starts at Root and
   /// folding N is profitable.
   virtual
-  bool IsLegalAndProfitableToFold(SDNode *N, SDNode *U, SDNode *Root) const {
-    return true;
-  }
-  
+  bool IsLegalAndProfitableToFold(SDNode *N, SDNode *U, SDNode *Root) const;
+
   /// CreateTargetHazardRecognizer - Return a newly allocated hazard recognizer
   /// to use for this target when scheduling the DAG.
   virtual ScheduleHazardRecognizer *CreateTargetHazardRecognizer();