diff --git a/llvm/include/llvm/ProfileData/MemProf.h b/llvm/include/llvm/ProfileData/MemProf.h
index 8f5ba9c333320..a6501493172b2 100644
--- a/llvm/include/llvm/ProfileData/MemProf.h
+++ b/llvm/include/llvm/ProfileData/MemProf.h
@@ -439,7 +439,7 @@ struct IndexedMemProfRecord {
   // on the schema provided in \p Schema.
   void serialize(const MemProfSchema &Schema, raw_ostream &OS,
                  IndexedVersion Version,
-                 llvm::DenseMap<memprof::CallStackId, LinearCallStackId>
+                 llvm::DenseMap<CallStackId, LinearCallStackId>
                      *MemProfCallStackIndexes = nullptr) const;
 
   // Deserializes memprof records from the Buffer.
@@ -579,15 +579,14 @@ class RecordWriterTrait {
   IndexedVersion Version;
 
   // Mappings from CallStackId to the indexes into the call stack array.
-  llvm::DenseMap<memprof::CallStackId, LinearCallStackId>
-      *MemProfCallStackIndexes;
+  llvm::DenseMap<CallStackId, LinearCallStackId> *MemProfCallStackIndexes;
 
 public:
   // We do not support the default constructor, which does not set Version.
   RecordWriterTrait() = delete;
-  RecordWriterTrait(const MemProfSchema *Schema, IndexedVersion V,
-                    llvm::DenseMap<memprof::CallStackId, LinearCallStackId>
-                        *MemProfCallStackIndexes)
+  RecordWriterTrait(
+      const MemProfSchema *Schema, IndexedVersion V,
+      llvm::DenseMap<CallStackId, LinearCallStackId> *MemProfCallStackIndexes)
       : Schema(Schema), Version(V),
         MemProfCallStackIndexes(MemProfCallStackIndexes) {}
 
@@ -1039,11 +1038,10 @@ class CallStackRadixTreeBuilder {
   CallStackRadixTreeBuilder() = default;
 
   // Build a radix tree array.
-  void
-  build(llvm::MapVector<CallStackId, llvm::SmallVector<FrameId>>
-            &&MemProfCallStackData,
-        const llvm::DenseMap<FrameId, LinearFrameId> &MemProfFrameIndexes,
-        llvm::DenseMap<memprof::FrameId, memprof::FrameStat> &FrameHistogram);
+  void build(llvm::MapVector<CallStackId, llvm::SmallVector<FrameId>>
+                 &&MemProfCallStackData,
+             const llvm::DenseMap<FrameId, LinearFrameId> &MemProfFrameIndexes,
+             llvm::DenseMap<FrameId, FrameStat> &FrameHistogram);
 
   const std::vector<LinearFrameId> &getRadixArray() const { return RadixArray; }
 
diff --git a/llvm/include/llvm/ProfileData/MemProfReader.h b/llvm/include/llvm/ProfileData/MemProfReader.h
index b42e4f5977740..f0286820fa462 100644
--- a/llvm/include/llvm/ProfileData/MemProfReader.h
+++ b/llvm/include/llvm/ProfileData/MemProfReader.h
@@ -76,8 +76,8 @@ class MemProfReader {
       Callback =
           std::bind(&MemProfReader::idToFrame, this, std::placeholders::_1);
 
-    memprof::CallStackIdConverter<decltype(CSIdToCallStack)> CSIdConv(
-        CSIdToCallStack, Callback);
+    CallStackIdConverter<decltype(CSIdToCallStack)> CSIdConv(CSIdToCallStack,
+                                                             Callback);
 
     const IndexedMemProfRecord &IndexedRecord = Iter->second;
     GuidRecord = {
diff --git a/llvm/lib/ProfileData/MemProf.cpp b/llvm/lib/ProfileData/MemProf.cpp
index 8e3053748c087..4ca868722ec4e 100644
--- a/llvm/lib/ProfileData/MemProf.cpp
+++ b/llvm/lib/ProfileData/MemProf.cpp
@@ -343,15 +343,15 @@ MemProfRecord IndexedMemProfRecord::toMemProfRecord(
   MemProfRecord Record;
 
   Record.AllocSites.reserve(AllocSites.size());
-  for (const memprof::IndexedAllocationInfo &IndexedAI : AllocSites) {
-    memprof::AllocationInfo AI;
+  for (const IndexedAllocationInfo &IndexedAI : AllocSites) {
+    AllocationInfo AI;
     AI.Info = IndexedAI.Info;
     AI.CallStack = Callback(IndexedAI.CSId);
     Record.AllocSites.push_back(std::move(AI));
   }
 
   Record.CallSites.reserve(CallSiteIds.size());
-  for (memprof::CallStackId CSId : CallSiteIds)
+  for (CallStackId CSId : CallSiteIds)
     Record.CallSites.push_back(Callback(CSId));
 
   return Record;
@@ -487,7 +487,7 @@ void CallStackRadixTreeBuilder::build(
     llvm::MapVector<CallStackId, llvm::SmallVector<FrameId>>
         &&MemProfCallStackData,
     const llvm::DenseMap<FrameId, LinearFrameId> &MemProfFrameIndexes,
-    llvm::DenseMap<memprof::FrameId, memprof::FrameStat> &FrameHistogram) {
+    llvm::DenseMap<FrameId, FrameStat> &FrameHistogram) {
   // Take the vector portion of MemProfCallStackData.  The vector is exactly
   // what we need to sort.  Also, we no longer need its lookup capability.
   llvm::SmallVector<CSIdPair, 0> CallStacks = MemProfCallStackData.takeVector();