# Check illegal 64bit INVPCID instructions .text _start: invvpid (%rcx), %bx invvpid (%rcx), %ebx invvpid %rbx, (%rcx) invvpid %rbx, %rcx .intel_syntax noprefix invvpid bx, [rcx] invvpid ebx, [rcx] invvpid [rcx], rbx invvpid rcx, rbx