237                              Instruction *DefX, PHINode *CntPhi,
243                                 Value *Var, Instruction *DefX,
1558 static PHINode *getRecurrenceVar(Value *VarX, Instruction *DefX,  in getRecurrenceVar()  argument
1562       (PhiX->getOperand(0) == DefX || PhiX->getOperand(1) == DefX))  in getRecurrenceVar()
1597                                           PHINode *&CntPhi, Instruction *&DefX,  in detectShiftUntilLessThanIdiom()  argument
1601   DefX = nullptr;  in detectShiftUntilLessThanIdiom()
1610     DefX = dyn_cast<Instruction>(T);  in detectShiftUntilLessThanIdiom()
1615   if (!DefX || !isa<PHINode>(DefX))  in detectShiftUntilLessThanIdiom()
1618   PHINode *VarPhi = cast<PHINode>(DefX);  in detectShiftUntilLessThanIdiom()
1623   DefX = dyn_cast<Instruction>(VarPhi->getIncomingValue(Idx));  in detectShiftUntilLessThanIdiom()
1624   if (!DefX || DefX->getNumOperands() == 0 || DefX->getOperand(0) != VarPhi)  in detectShiftUntilLessThanIdiom()
1628   if (DefX->getOpcode() != Instruction::LShr)  in detectShiftUntilLessThanIdiom()
1632   ConstantInt *Shft = dyn_cast<ConstantInt>(DefX->getOperand(1));  in detectShiftUntilLessThanIdiom()
1828                                       Instruction *&DefX) {  in detectShiftUntilZeroIdiom()  argument
1832   DefX = nullptr;  in detectShiftUntilZeroIdiom()
1840     DefX = dyn_cast<Instruction>(T);  in detectShiftUntilZeroIdiom()
1845   if (!DefX || !DefX->isShift())  in detectShiftUntilZeroIdiom()
1847   IntrinID = DefX->getOpcode() == Instruction::Shl ? Intrinsic::cttz :  in detectShiftUntilZeroIdiom()
1849   ConstantInt *Shft = dyn_cast<ConstantInt>(DefX->getOperand(1));  in detectShiftUntilZeroIdiom()
1852   VarX = DefX->getOperand(0);  in detectShiftUntilZeroIdiom()
1855   PHINode *PhiX = getRecurrenceVar(VarX, DefX, LoopEntry);  in detectShiftUntilZeroIdiom()
1863   if (DefX->getOpcode() == Instruction::AShr && !isKnownNonNegative(InitX, DL))  in detectShiftUntilZeroIdiom()
1922                                                Value *InitX, Instruction *DefX,  in insertFFSIfProfitable()  argument
1977   transformLoopToCountable(IntrinID, PH, CntInst, CntPhi, InitX, DefX,  in insertFFSIfProfitable()
1978                            DefX->getDebugLoc(), ZeroCheck,  in insertFFSIfProfitable()
1993   Instruction *DefX = nullptr;  in recognizeAndInsertFFS()  local
1998                                  DefX))  in recognizeAndInsertFFS()
2001   return insertFFSIfProfitable(IntrinID, InitX, DefX, CntPhi, CntInst);  in recognizeAndInsertFFS()
2011   Instruction *DefX = nullptr;  in recognizeShiftUntilLessThan()  local
2017                                      CntPhi, DefX, LoopThreshold))  in recognizeShiftUntilLessThan()
2022     return insertFFSIfProfitable(IntrinID, InitX, DefX, CntPhi, CntInst);  in recognizeShiftUntilLessThan()
2063   transformLoopToCountable(IntrinID, PH, CntInst, CntPhi, InitX, DefX,  in recognizeShiftUntilLessThan()
2064                            DefX->getDebugLoc(), ZeroCheck,  in recognizeShiftUntilLessThan()
2180     PHINode *CntPhi, Value *InitX, Instruction *DefX, const DebugLoc &DL,  in transformLoopToCountable()  argument
2196     if (DefX->getOpcode() == Instruction::AShr)  in transformLoopToCountable()
2198     else if (DefX->getOpcode() == Instruction::LShr)  in transformLoopToCountable()
2200     else if (DefX->getOpcode() == Instruction::Shl) // cttz  in transformLoopToCountable()