+class BForm_1<bits<6> opcode, bits<5> bo, bit aa, bit lk, dag OOL, dag IOL,
+ string asmstr>
+ : BForm<opcode, aa, lk, OOL, IOL, asmstr> {
+ let BIBO{4-0} = bo;
+ let BIBO{6-5} = 0;
+ let CR = 0;
+}
+
+class BForm_2<bits<6> opcode, bits<5> bo, bits<5> bi, bit aa, bit lk,
+ dag OOL, dag IOL, string asmstr>
+ : I<opcode, OOL, IOL, asmstr, BrB> {
+ bits<14> BD;
+
+ let Inst{6-10} = bo;
+ let Inst{11-15} = bi;
+ let Inst{16-29} = BD;
+ let Inst{30} = aa;
+ let Inst{31} = lk;
+}
+
+class BForm_3<bits<6> opcode, bit aa, bit lk,
+ dag OOL, dag IOL, string asmstr>
+ : I<opcode, OOL, IOL, asmstr, BrB> {
+ bits<5> BO;
+ bits<5> BI;
+ bits<14> BD;
+
+ let Inst{6-10} = BO;
+ let Inst{11-15} = BI;
+ let Inst{16-29} = BD;
+ let Inst{30} = aa;
+ let Inst{31} = lk;
+}
+
+// 1.7.3 SC-Form
+class SCForm<bits<6> opcode, bits<1> xo,
+ dag OOL, dag IOL, string asmstr, InstrItinClass itin,
+ list<dag> pattern>
+ : I<opcode, OOL, IOL, asmstr, itin> {
+ bits<7> LEV;
+
+ let Pattern = pattern;
+
+ let Inst{20-26} = LEV;
+ let Inst{30} = xo;
+}