fix documentation comments; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275021 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 13 insertions, 21 deletions

diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index ef52c751163..8fd558602e7 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -66,24 +66,24 @@ struct SDVTList {
 namespace ISD {
   /// Node predicates
 
-  /// Return true if the specified node is a
-  /// BUILD_VECTOR where all of the elements are ~0 or undef.
+  /// Return true if the specified node is a BUILD_VECTOR where all of the
+  /// elements are ~0 or undef.
   bool isBuildVectorAllOnes(const SDNode *N);
 
-  /// Return true if the specified node is a
-  /// BUILD_VECTOR where all of the elements are 0 or undef.
+  /// Return true if the specified node is a BUILD_VECTOR where all of the
+  /// elements are 0 or undef.
   bool isBuildVectorAllZeros(const SDNode *N);
 
-  /// \brief Return true if the specified node is a BUILD_VECTOR node of
-  /// all ConstantSDNode or undef.
+  /// Return true if the specified node is a BUILD_VECTOR node of all
+  /// ConstantSDNode or undef.
   bool isBuildVectorOfConstantSDNodes(const SDNode *N);
 
-  /// \brief Return true if the specified node is a BUILD_VECTOR node of
-  /// all ConstantFPSDNode or undef.
+  /// Return true if the specified node is a BUILD_VECTOR node of all
+  /// ConstantFPSDNode or undef.
   bool isBuildVectorOfConstantFPSDNodes(const SDNode *N);
 
-  /// Return true if the node has at least one operand
-  /// and all operands of the specified node are ISD::UNDEF.
+  /// Return true if the node has at least one operand and all operands of the
+  /// specified node are ISD::UNDEF.
   bool allOperandsUndef(const SDNode *N);
 }  // end llvm:ISD namespace
 
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index d87a8b9dce0..e3aeffbc2ef 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -93,8 +93,9 @@ bool ConstantFPSDNode::isValueValidForType(EVT VT,
 //                              ISD Namespace
 //===----------------------------------------------------------------------===//
 
-/// isBuildVectorAllOnes - Return true if the specified node is a
-/// BUILD_VECTOR where all of the elements are ~0 or undef.
+// FIXME: AllOnes and AllZeros duplicate a lot of code. Could these be
+// specializations of the more general isConstantSplatVector()?
+
 bool ISD::isBuildVectorAllOnes(const SDNode *N) {
   // Look through a bit convert.
   while (N->getOpcode() == ISD::BITCAST)
@@ -139,9 +140,6 @@ bool ISD::isBuildVectorAllOnes(const SDNode *N) {
   return true;
 }
 
-
-/// isBuildVectorAllZeros - Return true if the specified node is a
-/// BUILD_VECTOR where all of the elements are 0 or undef.
 bool ISD::isBuildVectorAllZeros(const SDNode *N) {
   // Look through a bit convert.
   while (N->getOpcode() == ISD::BITCAST)
@@ -179,8 +177,6 @@ bool ISD::isBuildVectorAllZeros(const SDNode *N) {
   return true;
 }
 
-/// \brief Return true if the specified node is a BUILD_VECTOR node of
-/// all ConstantSDNode or undef.
 bool ISD::isBuildVectorOfConstantSDNodes(const SDNode *N) {
   if (N->getOpcode() != ISD::BUILD_VECTOR)
     return false;
@@ -194,8 +190,6 @@ bool ISD::isBuildVectorOfConstantSDNodes(const SDNode *N) {
   return true;
 }
 
-/// \brief Return true if the specified node is a BUILD_VECTOR node of
-/// all ConstantFPSDNode or undef.
 bool ISD::isBuildVectorOfConstantFPSDNodes(const SDNode *N) {
   if (N->getOpcode() != ISD::BUILD_VECTOR)
     return false;
@@ -209,8 +203,6 @@ bool ISD::isBuildVectorOfConstantFPSDNodes(const SDNode *N) {
   return true;
 }
 
-/// allOperandsUndef - Return true if the node has at least one operand
-/// and all operands of the specified node are ISD::UNDEF.
 bool ISD::allOperandsUndef(const SDNode *N) {
   // Return false if the node has no operands.
   // This is "logically inconsistent" with the definition of "all" but