DependenceAnalysis.h - reduce AliasAnalysis.h include to forward declaration. NFC.

This requires the replacement of legacy class AliasAnalysis usages with AAResults (which it typedefs to anyhow)

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;

llvm/lib/Analysis/DependenceAnalysis.cpp

@@ -647,7 +647,7 @@ void Dependence::dump(raw_ostream &OS) const {
 // tbaa, non-overlapping regions etc), then it is known there is no dependecy.
 // Otherwise the underlying objects are checked to see if they point to
 // different identifiable objects.
-static AliasResult underlyingObjectsAlias(AliasAnalysis *AA,
+static AliasResult underlyingObjectsAlias(AAResults *AA,
                                           const DataLayout &DL,
                                           const MemoryLocation &LocA,
                                           const MemoryLocation &LocB) {

llvm/unittests/Transforms/Utils/CodeMoverUtilsTest.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Utils/CodeMoverUtils.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/DependenceAnalysis.h"
 #include "llvm/Analysis/LoopInfo.h"