[upstream-update] API rename llvm::DenseMap::reserve => llvm::DenseMap::resize.

(cherry picked from commit b11f7a0)
(cherry picked from commit 39eab3a)

Author: gottesmm

lib/SILOptimizer/SILCombiner/SILCombine.cpp

@@ -225,7 +225,7 @@ bool SILCombiner::doOneIteration(SILFunction &F, unsigned Iteration) {
 void SILCombineWorklist::addInitialGroup(ArrayRef<SILInstruction *> 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(llvm::dbgs() << "SC: ADDING: " << List.size()
         << " instrs to worklist\n");
   while (!List.empty()) {