NFC. Make ScalarEvolution::isMonotonicPredicate public

Will be used by the upcoming LoopPredication optimization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293062 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Analysis/ScalarEvolution.h b/include/llvm/Analysis/ScalarEvolution.h
index bc2b3a3..7395532 100644 (file)
--- a/include/llvm/Analysis/ScalarEvolution.h
+++ b/include/llvm/Analysis/ScalarEvolution.h
@@ -1065,18 +1065,6 @@ private:
   bool isMonotonicPredicateImpl(const SCEVAddRecExpr *LHS,
                                 ICmpInst::Predicate Pred, bool &Increasing);
 
-  /// Return true if, for all loop invariant X, the predicate "LHS `Pred` X"
-  /// is monotonically increasing or decreasing.  In the former case set
-  /// `Increasing` to true and in the latter case set `Increasing` to false.
-  ///
-  /// A predicate is said to be monotonically increasing if may go from being
-  /// false to being true as the loop iterates, but never the other way
-  /// around.  A predicate is said to be monotonically decreasing if may go
-  /// from being true to being false as the loop iterates, but never the other
-  /// way around.
-  bool isMonotonicPredicate(const SCEVAddRecExpr *LHS, ICmpInst::Predicate Pred,
-                            bool &Increasing);
-
   /// Return SCEV no-wrap flags that can be proven based on reasoning about
   /// how poison produced from no-wrap flags on this value (e.g. a nuw add)
   /// would trigger undefined behavior on overflow.
@@ -1432,6 +1420,18 @@ public:
   bool isKnownPredicate(ICmpInst::Predicate Pred, const SCEV *LHS,
                         const SCEV *RHS);
 
+  /// Return true if, for all loop invariant X, the predicate "LHS `Pred` X"
+  /// is monotonically increasing or decreasing.  In the former case set
+  /// `Increasing` to true and in the latter case set `Increasing` to false.
+  ///
+  /// A predicate is said to be monotonically increasing if may go from being
+  /// false to being true as the loop iterates, but never the other way
+  /// around.  A predicate is said to be monotonically decreasing if may go
+  /// from being true to being false as the loop iterates, but never the other
+  /// way around.
+  bool isMonotonicPredicate(const SCEVAddRecExpr *LHS, ICmpInst::Predicate Pred,
+                            bool &Increasing);
+
   /// Return true if the result of the predicate LHS `Pred` RHS is loop
   /// invariant with respect to L.  Set InvariantPred, InvariantLHS and
   /// InvariantLHS so that InvariantLHS `InvariantPred` InvariantRHS is the