LoopAccessAnalysis - fix uninitialized variable warnings. NFCI.

Author: RKSimon

llvm/include/llvm/Analysis/LoopAccessAnalysis.h

@@ -175,8 +175,8 @@ class MemoryDepChecker {
   };
 
   MemoryDepChecker(PredicatedScalarEvolution &PSE, const Loop *L)
-      : PSE(PSE), InnermostLoop(L), AccessIdx(0), MaxSafeRegisterWidth(-1U),
-        FoundNonConstantDistanceDependence(false),
+      : PSE(PSE), InnermostLoop(L), AccessIdx(0), MaxSafeDepDistBytes(0),
+        MaxSafeRegisterWidth(-1U), FoundNonConstantDistanceDependence(false),
         Status(VectorizationSafetyStatus::Safe), RecordDependences(true) {}
 
   /// Register the ___location (instructions are given increasing numbers)
@@ -750,11 +750,11 @@ class LoopAccessLegacyAnalysis : public FunctionPass {
   DenseMap<Loop *, std::unique_ptr<LoopAccessInfo>> LoopAccessInfoMap;
 
   // The used analysis passes.
-  ScalarEvolution *SE;
-  const TargetLibraryInfo *TLI;
-  AliasAnalysis *AA;
-  DominatorTree *DT;
-  LoopInfo *LI;
+  ScalarEvolution *SE = nullptr;
+  const TargetLibraryInfo *TLI = nullptr;
+  AliasAnalysis *AA = nullptr;
+  DominatorTree *DT = nullptr;
+  LoopInfo *LI = nullptr;
 };
 
 /// This analysis provides dependence information for the memory