diff options
| -rw-r--r-- | include/llvm/Target/TargetLowering.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h index d538b4d6c0..0d64271199 100644 --- a/include/llvm/Target/TargetLowering.h +++ b/include/llvm/Target/TargetLowering.h @@ -281,6 +281,17 @@ public: } //===--------------------------------------------------------------------===// + // TargetLowering Optimization Methods + // + + /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We + /// use this predicate to simplify operations downstream. Op and Mask are + /// known to be the same type. Targets can implement the + /// isMaskedValueZeroForTargetNode method, to allow target nodes to be + /// understood. + bool MaskedValueIsZero(const SDOperand &Op, uint64_t Mask) const; + + //===--------------------------------------------------------------------===// // TargetLowering Configuration Methods - These methods should be invoked by // the derived class constructor to configure this object for the target. // @@ -413,12 +424,9 @@ public: virtual const char *getTargetNodeName(unsigned Opcode) const; /// isMaskedValueZeroForTargetNode - Return true if 'Op & Mask' is known to - /// be zero. Op is expected to be a target specific node. Used by DAG - /// combiner. MVIZ is a function pointer to the main MaskedValueIsZero - /// function. - typedef bool (*MVIZFnPtr)(const SDOperand&, uint64_t, const TargetLowering &); - virtual bool isMaskedValueZeroForTargetNode(const SDOperand &Op,uint64_t Mask, - MVIZFnPtr MVIZ) const; + /// be zero. Op is expected to be a target specific node. + virtual bool isMaskedValueZeroForTargetNode(const SDOperand &Op, + uint64_t Mask) const; //===--------------------------------------------------------------------===// // Inline Asm Support hooks |