Lines Matching defs:PHI

111 /// InsertNewDef - Insert an empty PHI or IMPLICIT_DEF instruction which define
141 /// a block.  Because of this, we need to insert a new PHI node in SomeBB to
184   // If an identical PHI is already in BB, just reuse it.
193   // Otherwise, we do need a PHI: insert one now.
196       InsertNewDef(TargetOpcode::PHI, BB, Loc, RegAttrs, MRI, TII);
198   // Fill in all the predecessors of the PHI.
202   // See if the PHI node can be merged to a single value.  This can happen in
203   // loop cases when we get a PHI of itself and one other value.
212   LLVM_DEBUG(dbgs() << "  Inserted PHI: " << *InsertedPHI);
227 /// RewriteUse - Rewrite a use of the symbolic value.  This handles PHI nodes,
273   /// Iterator for PHI operands.
276     MachineInstr *PHI;
281       : PHI(P), idx(1) {}
283       : PHI(P), idx(PHI->getNumOperands()) {}
289     Register getIncomingValue() { return PHI->getOperand(idx).getReg(); }
292       return PHI->getOperand(idx+1).getMBB();
296   static inline PHI_iterator PHI_begin(PhiT *PHI) { return PHI_iterator(PHI); }
298   static inline PHI_iterator PHI_end(PhiT *PHI) {
299     return PHI_iterator(PHI, true);
320   /// CreateEmptyPHI - Create a PHI instruction that defines a new register.
325     MachineInstr *PHI =
326         InsertNewDef(TargetOpcode::PHI, BB, Loc, Updater->RegAttrs,
328     return PHI->getOperand(0).getReg();
331   /// AddPHIOperand - Add the specified value as an operand of the PHI for
333   static void AddPHIOperand(MachineInstr *PHI, Register Val,
335     MachineInstrBuilder(*Pred->getParent(), PHI).addReg(Val).addMBB(Pred);
338   /// InstrIsPHI - Check if an instruction is a PHI.
346   /// is a PHI instruction.
351   /// ValueIsNewPHI - Like ValueIsPHI but also check if the PHI has no source
354     MachineInstr *PHI = ValueIsPHI(Val, Updater);
355     if (PHI && PHI->getNumOperands() <= 1)
356       return PHI;
360   /// GetPHIValue - For the specified PHI instruction, return the register
362   static Register GetPHIValue(MachineInstr *PHI) {
363     return PHI->getOperand(0).getReg();