diff --git a/llvm/include/llvm/ProfileData/InstrProf.h b/llvm/include/llvm/ProfileData/InstrProf.h
--- a/llvm/include/llvm/ProfileData/InstrProf.h
+++ b/llvm/include/llvm/ProfileData/InstrProf.h
@@ -281,13 +281,20 @@
 /// An enum describing the attributes of an instrumented profile.
 enum class InstrProfKind {
   Unknown = 0x0,
-  FE = 0x1, // A frontend clang profile, incompatible with other attrs.
-  IR = 0x2, // An IR-level profile (default when -fprofile-generate is used).
-  BB = 0x4, // A profile with entry basic block instrumentation.
-  CS = 0x8, // A context sensitive IR-level profile.
-  SingleByteCoverage = 0x10, // Use single byte probes for coverage.
-  FunctionEntryOnly = 0x20,  // Only instrument the function entry basic block.
-  MemProf = 0x40, // A memory profile collected using -fprofile=memory.
+  // A frontend clang profile, incompatible with other attrs.
+  FrontendInstrumentation = 0x1,
+  // An IR-level profile (default when -fprofile-generate is used).
+  IRInstrumentation = 0x2,
+  // A profile with entry basic block instrumentation.
+  FunctionEntryInstrumentation = 0x4,
+  // A context sensitive IR-level profile.
+  ContextSensitive = 0x8,
+  // Use single byte probes for coverage.
+  SingleByteCoverage = 0x10,
+  // Only instrument the function entry basic block.
+  FunctionEntryOnly = 0x20,
+  // A memory profile collected using -fprofile=memory.
+  MemProf = 0x40,
   LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue=*/MemProf)
 };
 
diff --git a/llvm/include/llvm/ProfileData/InstrProfReader.h b/llvm/include/llvm/ProfileData/InstrProfReader.h
--- a/llvm/include/llvm/ProfileData/InstrProfReader.h
+++ b/llvm/include/llvm/ProfileData/InstrProfReader.h
@@ -213,15 +213,16 @@
   static bool hasFormat(const MemoryBuffer &Buffer);
 
   bool isIRLevelProfile() const override {
-    return static_cast<bool>(ProfileKind & InstrProfKind::IR);
+    return static_cast<bool>(ProfileKind & InstrProfKind::IRInstrumentation);
   }
 
   bool hasCSIRLevelProfile() const override {
-    return static_cast<bool>(ProfileKind & InstrProfKind::CS);
+    return static_cast<bool>(ProfileKind & InstrProfKind::ContextSensitive);
   }
 
   bool instrEntryBBEnabled() const override {
-    return static_cast<bool>(ProfileKind & InstrProfKind::BB);
+    return static_cast<bool>(ProfileKind &
+                             InstrProfKind::FunctionEntryInstrumentation);
   }
 
   bool hasSingleByteCoverage() const override {
diff --git a/llvm/include/llvm/ProfileData/InstrProfWriter.h b/llvm/include/llvm/ProfileData/InstrProfWriter.h
--- a/llvm/include/llvm/ProfileData/InstrProfWriter.h
+++ b/llvm/include/llvm/ProfileData/InstrProfWriter.h
@@ -106,11 +106,13 @@
 
     // Check if the profiles are in-compatible. Clang frontend profiles can't be
     // merged with other profile types.
-    if (static_cast<bool>((ProfileKind & InstrProfKind::FE) ^
-                          (Other & InstrProfKind::FE))) {
+    if (static_cast<bool>(
+            (ProfileKind & InstrProfKind::FrontendInstrumentation) ^
+            (Other & InstrProfKind::FrontendInstrumentation))) {
       return make_error<InstrProfError>(instrprof_error::unsupported_version);
     }
-    if (testIncompatible(InstrProfKind::FunctionEntryOnly, InstrProfKind::BB)) {
+    if (testIncompatible(InstrProfKind::FunctionEntryOnly,
+                         InstrProfKind::FunctionEntryInstrumentation)) {
       return make_error<InstrProfError>(
           instrprof_error::unsupported_version,
           "cannot merge FunctionEntryOnly profiles and BB profiles together");
diff --git a/llvm/lib/ProfileData/InstrProfReader.cpp b/llvm/lib/ProfileData/InstrProfReader.cpp
--- a/llvm/lib/ProfileData/InstrProfReader.cpp
+++ b/llvm/lib/ProfileData/InstrProfReader.cpp
@@ -45,13 +45,13 @@
 static InstrProfKind getProfileKindFromVersion(uint64_t Version) {
   InstrProfKind ProfileKind = InstrProfKind::Unknown;
   if (Version & VARIANT_MASK_IR_PROF) {
-    ProfileKind |= InstrProfKind::IR;
+    ProfileKind |= InstrProfKind::IRInstrumentation;
   }
   if (Version & VARIANT_MASK_CSIR_PROF) {
-    ProfileKind |= InstrProfKind::CS;
+    ProfileKind |= InstrProfKind::ContextSensitive;
   }
   if (Version & VARIANT_MASK_INSTR_ENTRY) {
-    ProfileKind |= InstrProfKind::BB;
+    ProfileKind |= InstrProfKind::FunctionEntryInstrumentation;
   }
   if (Version & VARIANT_MASK_BYTE_COVERAGE) {
     ProfileKind |= InstrProfKind::SingleByteCoverage;
@@ -177,16 +177,16 @@
   while (Line->startswith(":")) {
     StringRef Str = Line->substr(1);
     if (Str.equals_insensitive("ir"))
-      ProfileKind |= InstrProfKind::IR;
+      ProfileKind |= InstrProfKind::IRInstrumentation;
     else if (Str.equals_insensitive("fe"))
-      ProfileKind |= InstrProfKind::FE;
+      ProfileKind |= InstrProfKind::FrontendInstrumentation;
     else if (Str.equals_insensitive("csir")) {
-      ProfileKind |= InstrProfKind::IR;
-      ProfileKind |= InstrProfKind::CS;
+      ProfileKind |= InstrProfKind::IRInstrumentation;
+      ProfileKind |= InstrProfKind::ContextSensitive;
     } else if (Str.equals_insensitive("entry_first"))
-      ProfileKind |= InstrProfKind::BB;
+      ProfileKind |= InstrProfKind::FunctionEntryInstrumentation;
     else if (Str.equals_insensitive("not_entry_first"))
-      ProfileKind &= ~InstrProfKind::BB;
+      ProfileKind &= ~InstrProfKind::FunctionEntryInstrumentation;
     else
       return error(instrprof_error::bad_header);
     ++Line;
diff --git a/llvm/lib/ProfileData/InstrProfWriter.cpp b/llvm/lib/ProfileData/InstrProfWriter.cpp
--- a/llvm/lib/ProfileData/InstrProfWriter.cpp
+++ b/llvm/lib/ProfileData/InstrProfWriter.cpp
@@ -336,11 +336,12 @@
   IndexedInstrProf::Header Header;
   Header.Magic = IndexedInstrProf::Magic;
   Header.Version = IndexedInstrProf::ProfVersion::CurrentVersion;
-  if (static_cast<bool>(ProfileKind & InstrProfKind::IR))
+  if (static_cast<bool>(ProfileKind & InstrProfKind::IRInstrumentation))
     Header.Version |= VARIANT_MASK_IR_PROF;
-  if (static_cast<bool>(ProfileKind & InstrProfKind::CS))
+  if (static_cast<bool>(ProfileKind & InstrProfKind::ContextSensitive))
     Header.Version |= VARIANT_MASK_CSIR_PROF;
-  if (static_cast<bool>(ProfileKind & InstrProfKind::BB))
+  if (static_cast<bool>(ProfileKind &
+                        InstrProfKind::FunctionEntryInstrumentation))
     Header.Version |= VARIANT_MASK_INSTR_ENTRY;
   if (static_cast<bool>(ProfileKind & InstrProfKind::SingleByteCoverage))
     Header.Version |= VARIANT_MASK_BYTE_COVERAGE;
@@ -381,7 +382,7 @@
     OS.write(0);
   uint64_t CSSummaryOffset = 0;
   uint64_t CSSummarySize = 0;
-  if (static_cast<bool>(ProfileKind & InstrProfKind::CS)) {
+  if (static_cast<bool>(ProfileKind & InstrProfKind::ContextSensitive)) {
     CSSummaryOffset = OS.tell();
     CSSummarySize = SummarySize / sizeof(uint64_t);
     for (unsigned I = 0; I < CSSummarySize; I++)
@@ -438,7 +439,7 @@
 
   // For Context Sensitive summary.
   std::unique_ptr<IndexedInstrProf::Summary> TheCSSummary = nullptr;
-  if (static_cast<bool>(ProfileKind & InstrProfKind::CS)) {
+  if (static_cast<bool>(ProfileKind & InstrProfKind::ContextSensitive)) {
     TheCSSummary = IndexedInstrProf::allocSummary(SummarySize);
     std::unique_ptr<ProfileSummary> CSPS = CSISB.getSummary();
     setSummary(TheCSSummary.get(), *CSPS);
@@ -553,12 +554,13 @@
 
 Error InstrProfWriter::writeText(raw_fd_ostream &OS) {
   // Check CS first since it implies an IR level profile.
-  if (static_cast<bool>(ProfileKind & InstrProfKind::CS))
+  if (static_cast<bool>(ProfileKind & InstrProfKind::ContextSensitive))
     OS << "# CSIR level Instrumentation Flag\n:csir\n";
-  else if (static_cast<bool>(ProfileKind & InstrProfKind::IR))
+  else if (static_cast<bool>(ProfileKind & InstrProfKind::IRInstrumentation))
     OS << "# IR level Instrumentation Flag\n:ir\n";
 
-  if (static_cast<bool>(ProfileKind & InstrProfKind::BB))
+  if (static_cast<bool>(ProfileKind &
+                        InstrProfKind::FunctionEntryInstrumentation))
     OS << "# Always instrument the function entry block\n:entry_first\n";
   InstrProfSymtab Symtab;