diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Target/TargetInstrInfo.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index f9b361f..7526087 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -149,6 +149,14 @@ public: /// virtual MachineInstr *commuteInstruction(MachineInstr *MI) const = 0; + /// CommuteChangesDestination - Return true if commuting the specified + /// instruction will also changes the destination operand. Also return the + /// current operand index of the would be new destination register by + /// reference. This can happen when the commutable instruction is also a + /// two-address instruction. + virtual bool CommuteChangesDestination(MachineInstr *MI, + unsigned &OpIdx) const = 0; + /// AnalyzeBranch - Analyze the branching code at the end of MBB, returning /// true if it cannot be understood (e.g. it's a switch dispatch or isn't /// implemented for a target). Upon success, this returns false and returns @@ -384,6 +392,8 @@ protected: : TargetInstrInfo(desc, NumOpcodes) {} public: virtual MachineInstr *commuteInstruction(MachineInstr *MI) const; + virtual bool CommuteChangesDestination(MachineInstr *MI, + unsigned &OpIdx) const; virtual bool PredicateInstruction(MachineInstr *MI, const std::vector<MachineOperand> &Pred) const; |