906     if (TheNeg->getOpcode() == Instruction::Sub) {  in NegateValue()
983     for (auto Op : {Instruction::Add, Instruction::Sub, Instruction::Mul,  in shouldConvertOrWithNoCommonBitsToAdd()
1019 static bool ShouldBreakUpSubtract(Instruction *Sub) {  in ShouldBreakUpSubtract()  argument
1021   if (match(Sub, m_Neg(m_Value())) || match(Sub, m_FNeg(m_Value())))   in ShouldBreakUpSubtract()
1025   if (isa<UndefValue>(Sub->getOperand(1)))  in ShouldBreakUpSubtract()
1030   Value *V0 = Sub->getOperand(0);  in ShouldBreakUpSubtract()
1032       isReassociableOp(V0, Instruction::Sub, Instruction::FSub))  in ShouldBreakUpSubtract()
1034   Value *V1 = Sub->getOperand(1);  in ShouldBreakUpSubtract()
1036       isReassociableOp(V1, Instruction::Sub, Instruction::FSub))  in ShouldBreakUpSubtract()
1038   Value *VB = Sub->user_back();  in ShouldBreakUpSubtract()
1039   if (Sub->hasOneUse() &&  in ShouldBreakUpSubtract()
1041        isReassociableOp(VB, Instruction::Sub, Instruction::FSub)))  in ShouldBreakUpSubtract()
1049 static BinaryOperator *BreakUpSubtract(Instruction *Sub,  in BreakUpSubtract()  argument
1056   Value *NegVal = NegateValue(Sub->getOperand(1), Sub, ToRedo);  in BreakUpSubtract()
1057   BinaryOperator *New = CreateAdd(Sub->getOperand(0), NegVal, "", Sub, Sub);  in BreakUpSubtract()
1058   Sub->setOperand(0, Constant::getNullValue(Sub->getType())); // Drop use of op.  in BreakUpSubtract()
1059   Sub->setOperand(1, Constant::getNullValue(Sub->getType())); // Drop use of op.  in BreakUpSubtract()
1060   New->takeName(Sub);  in BreakUpSubtract()
1063   Sub->replaceAllUsesWith(New);  in BreakUpSubtract()
1064   New->setDebugLoc(Sub->getDebugLoc());  in BreakUpSubtract()
2228   if (I->getOpcode() == Instruction::Sub) {  in OptimizeInst()
2301       cast<Instruction>(BO->user_back())->getOpcode() == Instruction::Sub)  in OptimizeInst()