diff options
Diffstat (limited to 'lib/Target/Mips/MipsISelDAGToDAG.h')
| -rw-r--r-- | lib/Target/Mips/MipsISelDAGToDAG.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsISelDAGToDAG.h b/lib/Target/Mips/MipsISelDAGToDAG.h index bae3bbf71f3b..a768589b374b 100644 --- a/lib/Target/Mips/MipsISelDAGToDAG.h +++ b/lib/Target/Mips/MipsISelDAGToDAG.h @@ -125,6 +125,11 @@ private: /// starting at bit zero. virtual bool selectVSplatMaskR(SDValue N, SDValue &Imm) const; + /// Convert vector addition with vector subtraction if that allows to encode + /// constant as an immediate and thus avoid extra 'ldi' instruction. + /// add X, <-1, -1...> --> sub X, <1, 1...> + bool selectVecAddAsVecSubIfProfitable(SDNode *Node); + void Select(SDNode *N) override; virtual bool trySelect(SDNode *Node) = 0; |