Example: test.asm --- vcvtsi2ss and vcvtsi2sd AVX-512 inst.

.data

.code

testAsm PROC
    ; MAKE SURE TO SWITCH VISUAL STUDIO 2017 TO
    ; DISASSEMBLY VIEW BY PRESSING CTRL+F11!

    ; DO NOT TRY TO STEP INTO THESE INSTRUCTIONS.
    ; They are here just to show the incorrect disassembly.

    ; The following instruction:
    db 62h, 31h, 0FEh, 28h, 2Ah, 0D3h   ; vcvtsi2ss xmm10,xmm0,bx
    ; should've been:                     vcvtsi2ss xmm10,xmm0,rbx

    ; The following instruction:
    db 62h, 81h, 7Eh, 08h, 2Ah, 0D3h    ; vcvtsi2ss xmm18,xmm0,r11
    ; should've been:                     vcvtsi2ss xmm18,xmm0,r11d

    ; The following instruction:
    db 62h, 01h, 0FFh, 08h, 2Ah, 0D3h   ; vcvtsi2sd xmm26,xmm0,r11w
    ; should've been:                     vcvtsi2sd xmm26,xmm0,r11

    ; The following instruction:
    db 62h, 21h, 0FFh, 08h, 2Ah, 0D3h   ; vcvtsi2sd xmm26,xmm0,bx
    ; should've been:                     vcvtsi2sd xmm26,xmm0,rbx

    ret
testAsm ENDP

END