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/AsmPrinter/DIEHash.cpp b/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp
index 15ade3c..5392b71 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp
@@ -28,7 +28,7 @@
 
 #define DEBUG_TYPE "dwarfdebug"
 
-/// \brief Grabs the string in whichever attribute is passed in and returns
+/// Grabs the string in whichever attribute is passed in and returns
 /// a reference to it.
 static StringRef getDIEStringAttr(const DIE &Die, uint16_t Attr) {
   // Iterate through all the attributes until we find the one we're
@@ -40,7 +40,7 @@
   return StringRef("");
 }
 
-/// \brief Adds the string in \p Str to the hash. This also hashes
+/// Adds the string in \p Str to the hash. This also hashes
 /// a trailing NULL with the string.
 void DIEHash::addString(StringRef Str) {
   DEBUG(dbgs() << "Adding string " << Str << " to hash.\n");
@@ -51,7 +51,7 @@
 // FIXME: The LEB128 routines are copied and only slightly modified out of
 // LEB128.h.
 
-/// \brief Adds the unsigned in \p Value to the hash encoded as a ULEB128.
+/// Adds the unsigned in \p Value to the hash encoded as a ULEB128.
 void DIEHash::addULEB128(uint64_t Value) {
   DEBUG(dbgs() << "Adding ULEB128 " << Value << " to hash.\n");
   do {
@@ -77,7 +77,7 @@
   } while (More);
 }
 
-/// \brief Including \p Parent adds the context of Parent to the hash..
+/// Including \p Parent adds the context of Parent to the hash..
 void DIEHash::addParentContext(const DIE &Parent) {
 
   DEBUG(dbgs() << "Adding parent context to hash...\n");