VPMOVSXDQ syntax?

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bitRAKE

Joined: 21 Jul 2003
Posts: 4039
Location: vpcmpistri

bitRAKE 10 Feb 2020, 13:04

I've looked through the AVS2/AVS ... includes, but can't figure out the intended syntax for this instruction. I've tried a number of possiblities:

Code:


vpmovsxdq ymm0,:16 [mem]
vpmovsxdq ymm0,:32 [mem]

vpmovsxdq ymm0,dqword [mem]
vpmovsxdq ymm0,yword [mem]

vpmovsxdq ymm0,dqword ptr [mem]
vpmovsxdq ymm0, ptr [mem]

I could only get it to work by removing all type information from the memory definition and the instruction. But it would be nice to know how to override this one.

_________________
¯\(°_o)/¯ “languages are not safe - uses can be” Bjarne Stroustrup

10 Feb 2020, 13:04

bitRAKE

Joined: 21 Jul 2003
Posts: 4039
Location: vpcmpistri

bitRAKE 10 Feb 2020, 13:08

DQWORD does work. Embarassed

Thought for sure that I'd tried that.

_________________
¯\(°_o)/¯ “languages are not safe - uses can be” Bjarne Stroustrup

10 Feb 2020, 13:08

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8353
Location: Kraków, Poland

Tomasz Grysztar 10 Feb 2020, 13:36

DQWORD also has a synonym XWORD. Please note the symmetry:

Code:

VPMOVSXDQ ymm1, xmm2
VPMOVSXDQ ymm1, xword [mem]

10 Feb 2020, 13:36

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