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/CodeGen/InterleavedAccessPass.cpp b/llvm/lib/CodeGen/InterleavedAccessPass.cpp
index 9c906d3..e3dc964 100644
--- a/llvm/lib/CodeGen/InterleavedAccessPass.cpp
+++ b/llvm/lib/CodeGen/InterleavedAccessPass.cpp
@@ -104,15 +104,15 @@
   /// The maximum supported interleave factor.
   unsigned MaxFactor;
 
-  /// \brief Transform an interleaved load into target specific intrinsics.
+  /// Transform an interleaved load into target specific intrinsics.
   bool lowerInterleavedLoad(LoadInst *LI,
                             SmallVector<Instruction *, 32> &DeadInsts);
 
-  /// \brief Transform an interleaved store into target specific intrinsics.
+  /// Transform an interleaved store into target specific intrinsics.
   bool lowerInterleavedStore(StoreInst *SI,
                              SmallVector<Instruction *, 32> &DeadInsts);
 
-  /// \brief Returns true if the uses of an interleaved load by the
+  /// Returns true if the uses of an interleaved load by the
   /// extractelement instructions in \p Extracts can be replaced by uses of the
   /// shufflevector instructions in \p Shuffles instead. If so, the necessary
   /// replacements are also performed.
@@ -136,7 +136,7 @@
   return new InterleavedAccess();
 }
 
-/// \brief Check if the mask is a DE-interleave mask of the given factor
+/// Check if the mask is a DE-interleave mask of the given factor
 /// \p Factor like:
 ///     <Index, Index+Factor, ..., Index+(NumElts-1)*Factor>
 static bool isDeInterleaveMaskOfFactor(ArrayRef<int> Mask, unsigned Factor,
@@ -158,7 +158,7 @@
   return false;
 }
 
-/// \brief Check if the mask is a DE-interleave mask for an interleaved load.
+/// Check if the mask is a DE-interleave mask for an interleaved load.
 ///
 /// E.g. DE-interleave masks (Factor = 2) could be:
 ///     <0, 2, 4, 6>    (mask of index 0 to extract even elements)
@@ -176,7 +176,7 @@
   return false;
 }
 
-/// \brief Check if the mask can be used in an interleaved store.
+/// Check if the mask can be used in an interleaved store.
 //
 /// It checks for a more general pattern than the RE-interleave mask.
 /// I.e. <x, y, ... z, x+1, y+1, ...z+1, x+2, y+2, ...z+2, ...>