diff --git a/llvm/include/llvm/ProfileData/SampleProf.h b/llvm/include/llvm/ProfileData/SampleProf.h
--- a/llvm/include/llvm/ProfileData/SampleProf.h
+++ b/llvm/include/llvm/ProfileData/SampleProf.h
@@ -46,7 +46,6 @@
   success = 0,
   bad_magic,
   unsupported_version,
-  too_large,
   truncated,
   malformed,
   unrecognized_format,
diff --git a/llvm/lib/ProfileData/SampleProf.cpp b/llvm/lib/ProfileData/SampleProf.cpp
--- a/llvm/lib/ProfileData/SampleProf.cpp
+++ b/llvm/lib/ProfileData/SampleProf.cpp
@@ -70,8 +70,6 @@
       return "Invalid sample profile data (bad magic)";
     case sampleprof_error::unsupported_version:
       return "Unsupported sample profile format version";
-    case sampleprof_error::too_large:
-      return "Too much profile data";
     case sampleprof_error::truncated:
       return "Truncated profile data";
     case sampleprof_error::malformed:
diff --git a/llvm/lib/ProfileData/SampleProfReader.cpp b/llvm/lib/ProfileData/SampleProfReader.cpp
--- a/llvm/lib/ProfileData/SampleProfReader.cpp
+++ b/llvm/lib/ProfileData/SampleProfReader.cpp
@@ -1761,16 +1761,7 @@
 /// \returns an error code indicating the status of the buffer.
 static ErrorOr<std::unique_ptr<MemoryBuffer>>
 setupMemoryBuffer(const Twine &Filename) {
-  auto BufferOrErr = MemoryBuffer::getFileOrSTDIN(Filename, /*IsText=*/true);
-  if (std::error_code EC = BufferOrErr.getError())
-    return EC;
-  auto Buffer = std::move(BufferOrErr.get());
-
-  // Check the file.
-  if (uint64_t(Buffer->getBufferSize()) > std::numeric_limits<uint32_t>::max())
-    return sampleprof_error::too_large;
-
-  return std::move(Buffer);
+  return MemoryBuffer::getFileOrSTDIN(Filename, /*IsText=*/true);
 }
 
 /// Create a sample profile reader based on the format of the input file.