diff --git a/llvm/lib/Support/SpecialCaseList.cpp b/llvm/lib/Support/SpecialCaseList.cpp
index e465451924af..73f852624a69 100644
--- a/llvm/lib/Support/SpecialCaseList.cpp
+++ b/llvm/lib/Support/SpecialCaseList.cpp
@@ -126,7 +126,7 @@ bool SpecialCaseList::createInternal(const MemoryBuffer *MB,
 bool SpecialCaseList::parse(const MemoryBuffer *MB,
                             StringMap<size_t> &SectionsMap,
                             std::string &Error) {
-  // Iterate through each line in the blacklist file.
+  // Iterate through each line in the exclusion list file.
   SmallVector<StringRef, 16> Lines;
   MB->getBuffer().split(Lines, '\n');
 
diff --git a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
index c9409a8874e6..f1f94df038d2 100644
--- a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
@@ -179,7 +179,7 @@ static cl::opt<bool> ClEventCallbacks(
 static StringRef GetGlobalTypeString(const GlobalValue &G) {
   // Types of GlobalVariables are always pointer types.
   Type *GType = G.getValueType();
-  // For now we support blacklisting struct types only.
+  // For now we support excluding struct types only.
   if (StructType *SGType = dyn_cast<StructType>(GType)) {
     if (!SGType->isLiteral())
       return SGType->getName();
diff --git a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
index 950f46cd2c03..b69f4162e9c6 100644
--- a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -1051,7 +1051,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
   BasicBlock *ActualFnStart;
 
   // The following flags disable parts of MSan instrumentation based on
-  // blacklist contents and command-line options.
+  // exclusion list contents and command-line options.
   bool InsertChecks;
   bool PropagateShadow;
   bool PoisonStack;