revert this patch for now, it causes failures of:

LLVM::Transforms/GVN/2009-02-17-LoadPRECrash.ll
    LLVM::Transforms/GVN/2009-06-17-InvalidPRE.ll

llvm-svn: 90096

llvm/lib/Analysis/MemoryDependenceAnalysis.cpp

@@ -1156,18 +1156,8 @@ getNonLocalPointerDepFromBB(Value *Pointer, uint64_t PointeeSize,
       // that predecessor.  We can still do PRE of the load, which would insert
       // a computation of the pointer in this predecessor.
       if (PredPtr == 0) {
-        // Add the entry to the Result list.
-        NonLocalDepEntry Entry(Pred,
-                               MemDepResult::getClobber(Pred->getTerminator()));
-        Result.push_back(Entry);
-
-        // Add it to the cache for this CacheKey so that subsequent queries get
-        // this result.
-        Cache = &NonLocalPointerDeps[CacheKey].second;
-        MemoryDependenceAnalysis::NonLocalDepInfo::iterator It =
-          std::upper_bound(Cache->begin(), Cache->end(), Entry);
-        Cache->insert(It, Entry);
-        Cache = 0;
+        Result.push_back(NonLocalDepEntry(Pred,
+                              MemDepResult::getClobber(Pred->getTerminator())));
         continue;
       }