XSAVEOPT64

XSAVEOPT XSAVEOPT x86_64

2 encoding forms.

X86_XSAVEOPT64_X86_LEGACY_0F_AE_142973
mem,
X86_LEGACY AE /6 XSAVEOPT
XED_XSAVEOPT64_X86_LEGACY_0F_AE_880635
MEM0:rw:mxsave REG0=XED_REG_EDX:r:SUPP REG1=XED_REG_EAX:r:SUPP REG2=XED_REG_XCR0:r:SUPP
X86_LEGACY AE /6 XSAVEOPT