Apparatus for performing multiply-add operations on packed data

A processor comprising:

• a first storage area operable to have stored therein a first packed data containing at least an A1, an A2, an A3, and an A4 element;
• a second storage area operable to have stored therein a second packed data containing at least a B1, a B2, a B3, and a B4 element;
• a multiply circuit including
• a first multiplier coupled to said first storage area to receive said A1 and coupled to said second storage area to receive said B1;
• a second multiplier coupled to said first storage area to receive said A2 and coupled to said second storage are to receive said B2;
• a third multiplier coupled to said first storage area to receive said A3 and coupled to said second storage area to receive said B3;
• a fourth multiplier coupled to said first storage area to receive said A4 and coupled to said second storage area to receive said B4;
• said multiply-add circuit including a first Carry Save Adder (CSA) coupled to said first and second multipliers, said first CSA to receive two partial products generated by said first multiplier and receive two partial products generated by said second multiplier, said first CSA to generate a first set of two partial products, and a second (CSA) coupled to said third and fourth multipliers, said second CSA to receive two partial products generated by said third multiplier and receive two partial products generated by said fourth multiplier, said second CSA to generate a second set of two partial products
• a first adder coupled to said first CSA and said second CSA;
• a second adder coupled to said third multiplier and said fourth multiplier;
• and
• a third storage area coupled to said first adder and said second adder, said third storage area having at least a first field and a second field, said first field for saving an unaccumulated output of said first adder as a first unaccumulated data element of a third packed data, said second field for saving an unaccumulated output of said second adder as a second unaccumulated data element of said third packed data.