Rename DenseMap::resize() into DenseMap::reserve() (NFC)

This is more coherent with usual containers.

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264026 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/DenseMap.h

@@ -84,7 +84,7 @@ public:
   /// Grow the densemap so that it can contain at least Size items before
   /// resizing again. This means somewhat more than Size buckets because
   /// densemap resizes upon reaching 3/4 full.
-  void resize(size_type Size) {
+  void reserve(size_type Size) {
     // Size *= (4/3), rounding up.
     Size = (Size * 4 + 2) / 3;
     incrementEpoch();

include/llvm/Transforms/InstCombine/InstCombineWorklist.h

@@ -64,7 +64,7 @@ public:
   void AddInitialGroup(ArrayRef<Instruction *> List) {
     assert(Worklist.empty() && "Worklist must be empty to add initial group");
     Worklist.reserve(List.size()+16);
-    WorklistMap.resize(List.size());
+    WorklistMap.reserve(List.size());
     DEBUG(dbgs() << "IC: ADDING: " << List.size() << " instrs to worklist\n");
     unsigned Idx = 0;
     for (Instruction *I : reverse(List)) {

lib/Analysis/CFLAliasAnalysis.cpp

@@ -916,7 +916,7 @@ CFLAAResult::FunctionInfo CFLAAResult::buildSetsFrom(Function *Fn) {
   buildGraphFrom(*this, Fn, ReturnedValues, Map, Graph);
 
   DenseMap<GraphT::Node, Value *> NodeValueMap;
-  NodeValueMap.resize(Map.size());
+  NodeValueMap.reserve(Map.size());
   for (const auto &Pair : Map)
     NodeValueMap.insert(std::make_pair(Pair.second, Pair.first));