Remove \brief commands from doxygen comments.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

  for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46290

llvm-svn: 331272
diff --git a/llvm/lib/ProfileData/SampleProfReader.cpp b/llvm/lib/ProfileData/SampleProfReader.cpp
index 8048076..e192b58 100644
--- a/llvm/lib/ProfileData/SampleProfReader.cpp
+++ b/llvm/lib/ProfileData/SampleProfReader.cpp
@@ -43,7 +43,7 @@
 using namespace llvm;
 using namespace sampleprof;
 
-/// \brief Dump the function profile for \p FName.
+/// Dump the function profile for \p FName.
 ///
 /// \param FName Name of the function to print.
 /// \param OS Stream to emit the output to.
@@ -52,13 +52,13 @@
   OS << "Function: " << FName << ": " << Profiles[FName];
 }
 
-/// \brief Dump all the function profiles found on stream \p OS.
+/// Dump all the function profiles found on stream \p OS.
 void SampleProfileReader::dump(raw_ostream &OS) {
   for (const auto &I : Profiles)
     dumpFunctionProfile(I.getKey(), OS);
 }
 
-/// \brief Parse \p Input as function head.
+/// Parse \p Input as function head.
 ///
 /// Parse one line of \p Input, and update function name in \p FName,
 /// function's total sample count in \p NumSamples, function's entry
@@ -79,10 +79,10 @@
   return true;
 }
 
-/// \brief Returns true if line offset \p L is legal (only has 16 bits).
+/// Returns true if line offset \p L is legal (only has 16 bits).
 static bool isOffsetLegal(unsigned L) { return (L & 0xffff) == L; }
 
-/// \brief Parse \p Input as line sample.
+/// Parse \p Input as line sample.
 ///
 /// \param Input input line.
 /// \param IsCallsite true if the line represents an inlined callsite.
@@ -184,7 +184,7 @@
   return true;
 }
 
-/// \brief Load samples from a text file.
+/// Load samples from a text file.
 ///
 /// See the documentation at the top of the file for an explanation of
 /// the expected format.
@@ -750,7 +750,7 @@
   return sampleprof_error::success;
 }
 
-/// \brief Read a GCC AutoFDO profile.
+/// Read a GCC AutoFDO profile.
 ///
 /// This format is generated by the Linux Perf conversion tool at
 /// https://github.com/google/autofdo.
@@ -771,7 +771,7 @@
   return Magic == "adcg*704";
 }
 
-/// \brief Prepare a memory buffer for the contents of \p Filename.
+/// Prepare a memory buffer for the contents of \p Filename.
 ///
 /// \returns an error code indicating the status of the buffer.
 static ErrorOr<std::unique_ptr<MemoryBuffer>>
@@ -788,7 +788,7 @@
   return std::move(Buffer);
 }
 
-/// \brief Create a sample profile reader based on the format of the input file.
+/// Create a sample profile reader based on the format of the input file.
 ///
 /// \param Filename The file to open.
 ///
@@ -803,7 +803,7 @@
   return create(BufferOrError.get(), C);
 }
 
-/// \brief Create a sample profile reader based on the format of the input data.
+/// Create a sample profile reader based on the format of the input data.
 ///
 /// \param B The memory buffer to create the reader from (assumes ownership).
 ///