F3A6
ICLASS:     REPE_CMPSB
CATEGORY:   STRINGOP
EXTENSION:  BASE
IFORM:      REPE_CMPSB
ISA_SET:    I86
ATTRIBUTES: BYTEOP FIXED_BASE0 FIXED_BASE1 REP 
SHORT:      rep cmpsb byte ptr [esi], byte ptr [edi]
Encodable! F3A6
Identical re-encoding