1 files changed, 24 insertions, 5 deletions
diff --git a/llvm/include/llvm/Analysis/DependenceAnalysis.h b/llvm/include/llvm/Analysis/DependenceAnalysis.h
index 0c4002c3c3ba..305c9b1d88f2 100644
--- a/llvm/include/llvm/Analysis/DependenceAnalysis.h
+++ b/llvm/include/llvm/Analysis/DependenceAnalysis.h
@@ -40,12 +40,13 @@
 #define LLVM_ANALYSIS_DEPENDENCEANALYSIS_H
 
 #include "llvm/ADT/SmallBitVector.h"
-#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/Instructions.h"
+#include "llvm/IR/PassManager.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
-template <typename T> class ArrayRef;
+  class AAResults;
+  template <typename T> class ArrayRef;
   class Loop;
   class LoopInfo;
   class ScalarEvolution;
@@ -270,7 +271,7 @@ template <typename T> class ArrayRef;
   ///
   class DependenceInfo {
   public:
-    DependenceInfo(Function *F, AliasAnalysis *AA, ScalarEvolution *SE,
+    DependenceInfo(Function *F, AAResults *AA, ScalarEvolution *SE,
                    LoopInfo *LI)
         : AA(AA), SE(SE), LI(LI), F(F) {}
 
@@ -333,7 +334,7 @@ template <typename T> class ArrayRef;
     Function *getFunction() const { return F; }
 
   private:
-    AliasAnalysis *AA;
+    AAResults *AA;
     ScalarEvolution *SE;
     LoopInfo *LI;
     Function *F;
@@ -924,10 +925,28 @@ template <typename T> class ArrayRef;
     void updateDirection(Dependence::DVEntry &Level,
                          const Constraint &CurConstraint) const;
 
+    /// Given a linear access function, tries to recover subscripts
+    /// for each dimension of the array element access.
     bool tryDelinearize(Instruction *Src, Instruction *Dst,
                         SmallVectorImpl<Subscript> &Pair);
 
-  private:
+    /// Tries to delinearize access function for a fixed size multi-dimensional
+    /// array, by deriving subscripts from GEP instructions. Returns true upon
+    /// success and false otherwise.
+    bool tryDelinearizeFixedSize(Instruction *Src, Instruction *Dst,
+                                 const SCEV *SrcAccessFn,
+                                 const SCEV *DstAccessFn,
+                                 SmallVectorImpl<const SCEV *> &SrcSubscripts,
+                                 SmallVectorImpl<const SCEV *> &DstSubscripts);
+
+    /// Tries to delinearize access function for a multi-dimensional array with
+    /// symbolic runtime sizes.
+    /// Returns true upon success and false otherwise.
+    bool tryDelinearizeParametricSize(
+        Instruction *Src, Instruction *Dst, const SCEV *SrcAccessFn,
+        const SCEV *DstAccessFn, SmallVectorImpl<const SCEV *> &SrcSubscripts,
+        SmallVectorImpl<const SCEV *> &DstSubscripts);
+
     /// checkSubscript - Helper function for checkSrcSubscript and
     /// checkDstSubscript to avoid duplicate code
     bool checkSubscript(const SCEV *Expr, const Loop *LoopNest,