Use SmallPtrSet explicitly for SmallSets with pointer types (NFC).

Currently SmallSet<PointerTy> inherits from SmallPtrSet<PointerTy>. This
patch replaces such types with SmallPtrSet, because IMO it is slightly
clearer and allows us to get rid of unnecessarily including SmallSet.h

Reviewers: dblaikie, craig.topper

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D47836

llvm-svn: 334492

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/IPO/MergeFunctions.cpp b/llvm/lib/Transforms/IPO/MergeFunctions.cpp
index 208c50d..1399411 100644
--- a/llvm/lib/Transforms/IPO/MergeFunctions.cpp
+++ b/llvm/lib/Transforms/IPO/MergeFunctions.cpp
@@ -90,7 +90,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/SmallSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/IR/Argument.h"
@@ -874,7 +874,7 @@ void MergeFunctions::remove(Function *F) {
 void MergeFunctions::removeUsers(Value *V) {
   std::vector<Value *> Worklist;
   Worklist.push_back(V);
-  SmallSet<Value*, 8> Visited;
+  SmallPtrSet<Value*, 8> Visited;
   Visited.insert(V);
   while (!Worklist.empty()) {
     Value *V = Worklist.back();