class AdSize { bit hasAdSizePrefix = 1; }
class REX_W { bit hasREX_WPrefix = 1; }
class LOCK { bit hasLockPrefix = 1; }
+class SegFS { bits<2> SegOvrBits = 1; }
+class SegGS { bits<2> SegOvrBits = 2; }
class TB { bits<4> Prefix = 1; }
class REP { bits<4> Prefix = 2; }
class D8 { bits<4> Prefix = 3; }
FPFormat FPForm; // What flavor of FP instruction is this?
bits<3> FPFormBits = 0;
bit hasLockPrefix = 0; // Does this inst have a 0xF0 prefix?
+ bits<2> SegOvrBits = 0; // Segment override prefix.
}
class I<bits<8> o, Format f, dag outs, dag ins, string asm, list<dag> pattern>