Mov ADSIZE special for evex movdir64b

Author: XinWang10

llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp

@@ -1175,8 +1175,6 @@ static int getInstructionID(struct InternalInstruction *insn,
         attrMask |= ATTR_VEXL;
       if (l2FromEVEX4of4(insn->vectorExtensionPrefix[3]))
         attrMask |= ATTR_EVEXL2;
-      if (insn->hasAdSize)
-        attrMask |= ATTR_ADSIZE;
     } else if (insn->vectorExtensionType == TYPE_VEX_3B) {
       switch (ppFromVEX3of3(insn->vectorExtensionPrefix[2])) {
       case VEX_PREFIX_66:
@@ -1332,7 +1330,8 @@ static int getInstructionID(struct InternalInstruction *insn,
   //  any position.
   if ((insn->opcodeType == ONEBYTE && ((insn->opcode & 0xFC) == 0xA0)) ||
       (insn->opcodeType == TWOBYTE && (insn->opcode == 0xAE)) ||
-      (insn->opcodeType == THREEBYTE_38 && insn->opcode == 0xF8)) {
+      (insn->opcodeType == THREEBYTE_38 && insn->opcode == 0xF8) ||
+      (insn->vectorExtensionType == TYPE_EVEX && insn->opcode == 0xF8)) {
     // Make sure we observed the prefixes in any position.
     if (insn->hasAdSize)
       attrMask |= ATTR_ADSIZE;