diff options
Diffstat (limited to 'include/llvm/CodeGen/MachineRegisterInfo.h')
-rw-r--r-- | include/llvm/CodeGen/MachineRegisterInfo.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index 061d60a..aad79f6 100644 --- a/include/llvm/CodeGen/MachineRegisterInfo.h +++ b/include/llvm/CodeGen/MachineRegisterInfo.h @@ -57,6 +57,12 @@ class MachineRegisterInfo { /// physical registers. MachineOperand **PhysRegUseDefLists; + /// Get the next element in the use-def chain. + static MachineOperand *getNextOperandForReg(const MachineOperand *MO) { + assert(MO && MO->isReg() && "This is not a register operand!"); + return MO->Contents.Reg.Next; + } + /// UsedPhysRegs - This is a bit vector that is computed and set by the /// register allocator, and must be kept up to date by passes that run after /// register allocation (though most don't modify this). This is used @@ -135,6 +141,9 @@ public: template<bool Uses, bool Defs, bool SkipDebug> class defusechain_iterator; + // Make it a friend so it can access getNextOperandForReg(). + template<bool, bool, bool> friend class defusechain_iterator; + /// reg_iterator/reg_begin/reg_end - Walk all defs and uses of the specified /// register. typedef defusechain_iterator<true,true,false> reg_iterator; @@ -500,13 +509,13 @@ public: // Iterator traversal: forward iteration only defusechain_iterator &operator++() { // Preincrement assert(Op && "Cannot increment end iterator!"); - Op = Op->getNextOperandForReg(); + Op = getNextOperandForReg(Op); // If this is an operand we don't care about, skip it. while (Op && ((!ReturnUses && Op->isUse()) || (!ReturnDefs && Op->isDef()) || (SkipDebug && Op->isDebug()))) - Op = Op->getNextOperandForReg(); + Op = getNextOperandForReg(Op); return *this; } |