diff options
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index 136bdd5b4d..f1c9389656 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -970,6 +970,13 @@ public: /// class to allow target nodes to be understood. unsigned ComputeNumSignBits(SDValue Op, unsigned Depth = 0) const; + /// isBaseWithConstantOffset - Return true if the specified operand is an + /// ISD::ADD with a ConstantSDNode on the right-hand side, or if it is an + /// ISD::OR with a ConstantSDNode that is guaranteed to have the same + /// semantics as an ADD. This handles the equivalence: + /// X|Cst == X+Cst iff X&~Cst = 0. + bool isBaseWithConstantOffset(SDValue Op) const; + /// isKnownNeverNan - Test whether the given SDValue is known to never be NaN. bool isKnownNeverNaN(SDValue Op) const; |