Lines Matching defs:FSub
888 // fadd [nnan ninf] X, (fsub [nnan ninf] 0, X) ==> 0
897 Instruction *FSub = cast<Instruction>(SubOp);
898 if ((FMF.noNaNs() || FSub->hasNoNaNs()) &&
899 (FMF.noInfs() || FSub->hasNoInfs()))
906 /// Given operands for an FSub, see if we can fold the result. If not, this
913 return ConstantFoldInstOperands(Instruction::FSub, CLHS->getType(),
918 // fsub X, 0 ==> X
922 // fsub X, -0 ==> X, when we know X is not -0
927 // fsub 0, (fsub -0.0, X) ==> X
936 // fsub nnan ninf x, x ==> 0.0
2865 case Instruction::FSub:
3041 case Instruction::FSub:
