Lines Matching refs:FSub
801 // fadd [nnan ninf] X, (fsub [nnan ninf] 0, X) ==> 0
810 Instruction *FSub = cast<Instruction>(SubOp);
811 if ((FMF.noNaNs() || FSub->hasNoNaNs()) &&
812 (FMF.noInfs() || FSub->hasNoInfs()))
819 /// Given operands for an FSub, see if we can fold the result. If not, this
826 return ConstantFoldInstOperands(Instruction::FSub, CLHS->getType(),
831 // fsub X, 0 ==> X
835 // fsub X, -0 ==> X, when we know X is not -0
840 // fsub 0, (fsub -0.0, X) ==> X
849 // fsub nnan ninf x, x ==> 0.0
2900 case Instruction::FSub:
3077 case Instruction::FSub:
