diff options
Diffstat (limited to 'include/llvm/CodeGen')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAGNodes.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h index 9f56e177b8..1ed4dc43c5 100644 --- a/include/llvm/CodeGen/SelectionDAGNodes.h +++ b/include/llvm/CodeGen/SelectionDAGNodes.h @@ -809,13 +809,18 @@ public: /// operation. bool hasNUsesOfValue(unsigned NUses, unsigned Value) const; - // isOnlyUse - Return true if this node is the only use of N. + /// isOnlyUse - Return true if this node is the only use of N. + /// bool isOnlyUse(SDNode *N) const; - // isOperand - Return true if this node is an operand of N. + /// isOperand - Return true if this node is an operand of N. + /// bool isOperand(SDNode *N) const; - // isPredecessor - Return true if this node is a predecessor of N. + /// isPredecessor - Return true if this node is a predecessor of N. This node + /// is either an operand of N or it can be reached by recursively traversing + /// up the operands. + /// NOTE: this is an expensive method. Use it carefully. bool isPredecessor(SDNode *N) const; /// getNumOperands - Return the number of values used by this operation. |