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/Target/PowerPC/PPCFrameLowering.h b/llvm/lib/Target/PowerPC/PPCFrameLowering.h
index f845d5a..01c1555 100644
--- a/llvm/lib/Target/PowerPC/PPCFrameLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCFrameLowering.h
@@ -30,7 +30,7 @@
   const unsigned BasePointerSaveOffset;
 
   /**
-   * \brief Find register[s] that can be used in function prologue and epilogue
+   * Find register[s] that can be used in function prologue and epilogue
    *
    * Find register[s] that can be use as scratch register[s] in function
    * prologue and epilogue to save various registers (Link Register, Base
@@ -67,7 +67,7 @@
   bool twoUniqueScratchRegsRequired(MachineBasicBlock *MBB) const;
 
   /**
-   * \brief Create branch instruction for PPC::TCRETURN* (tail call return)
+   * Create branch instruction for PPC::TCRETURN* (tail call return)
    *
    * \param[in] MBB that is terminated by PPC::TCRETURN*
    */
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index f7948cc..83ed349 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -1477,7 +1477,7 @@
 }
 
 /**
- * \brief Common function used to match vmrgew and vmrgow shuffles
+ * Common function used to match vmrgew and vmrgow shuffles
  *
  * The indexOffset determines whether to look for even or odd words in
  * the shuffle mask. This is based on the of the endianness of the target
@@ -1534,7 +1534,7 @@
 }
 
 /**
- * \brief Determine if the specified shuffle mask is suitable for the vmrgew or
+ * Determine if the specified shuffle mask is suitable for the vmrgew or
  * vmrgow instructions.
  *
  * \param[in] N The shuffle vector SD Node to analyze
@@ -6887,7 +6887,7 @@
   RLI.MPI = MPI;
 }
 
-/// \brief Custom lowers floating point to integer conversions to use
+/// Custom lowers floating point to integer conversions to use
 /// the direct move instructions available in ISA 2.07 to avoid the
 /// need for load/store combinations.
 SDValue PPCTargetLowering::LowerFP_TO_INTDirectMove(SDValue Op,
@@ -7045,7 +7045,7 @@
   DAG.UpdateNodeOperands(TF.getNode(), ResChain, NewResChain);
 }
 
-/// \brief Analyze profitability of direct move
+/// Analyze profitability of direct move
 /// prefer float load to int load plus direct move
 /// when there is no integer use of int load
 bool PPCTargetLowering::directMoveIsProfitable(const SDValue &Op) const {
@@ -7075,7 +7075,7 @@
   return false;
 }
 
-/// \brief Custom lowers integer to floating point conversions to use
+/// Custom lowers integer to floating point conversions to use
 /// the direct move instructions available in ISA 2.07 to avoid the
 /// need for load/store combinations.
 SDValue PPCTargetLowering::LowerINT_TO_FPDirectMove(SDValue Op,
@@ -11611,7 +11611,7 @@
       ShiftCst);
 }
 
-/// \brief Reduces the number of fp-to-int conversion when building a vector.
+/// Reduces the number of fp-to-int conversion when building a vector.
 ///
 /// If this vector is built out of floating to integer conversions,
 /// transform it to a vector built out of floating point values followed by a
@@ -11691,7 +11691,7 @@
   return SDValue();
 }
 
-/// \brief Reduce the number of loads when building a vector.
+/// Reduce the number of loads when building a vector.
 ///
 /// Building a vector out of multiple loads can be converted to a load
 /// of the vector type if the loads are consecutive. If the loads are
@@ -13643,7 +13643,7 @@
   return MVT::i32;
 }
 
-/// \brief Returns true if it is beneficial to convert a load of a constant
+/// Returns true if it is beneficial to convert a load of a constant
 /// to just the constant itself.
 bool PPCTargetLowering::shouldConvertConstantLoadToIntImm(const APInt &Imm,
                                                           Type *Ty) const {
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index 76f8d72..b4373c1 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -765,7 +765,7 @@
 
     bool isFPExtFree(EVT DestVT, EVT SrcVT) const override;
 
-    /// \brief Returns true if it is beneficial to convert a load of a constant
+    /// Returns true if it is beneficial to convert a load of a constant
     /// to just the constant itself.
     bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
                                            Type *Ty) const override;
@@ -822,7 +822,7 @@
     FastISel *createFastISel(FunctionLoweringInfo &FuncInfo,
                              const TargetLibraryInfo *LibInfo) const override;
 
-    /// \brief Returns true if an argument of type Ty needs to be passed in a
+    /// Returns true if an argument of type Ty needs to be passed in a
     /// contiguous block of registers in calling convention CallConv.
     bool functionArgumentNeedsConsecutiveRegisters(
       Type *Ty, CallingConv::ID CallConv, bool isVarArg) const override {
diff --git a/llvm/lib/Target/PowerPC/PPCTargetObjectFile.h b/llvm/lib/Target/PowerPC/PPCTargetObjectFile.h
index c8b9b2e..417b8ed 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetObjectFile.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetObjectFile.h
@@ -25,7 +25,7 @@
     MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
                                       const TargetMachine &TM) const override;
 
-    /// \brief Describe a TLS variable address within debug info.
+    /// Describe a TLS variable address within debug info.
     const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const override;
   };