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Encoding PHSUBSW with VEX.256

PFaut2
Beginner
427 Views

Hi,

I don't understand how to encode PHSUBSW with VEX.256. According to the documentation, VEX.L must be 0, otherwise the instruction will #UD. I thought we must use VEX.L = 1 to force the VEX.256.

 

Thanks,

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1 Reply
David_V_Intel
Employee
112 Views

Hello PFaut2,

 

Thank you for posting on the Intel ® communities.

 

In order to get the best assistance I would recommend posting your inquiry in the Intel ® Developer Zone forums, refer to the link below: 

 

https://software.intel.com/en-us/home

 

 

Regards,

David V

 

Intel Customer Support Technician

Under Contract to Intel Corporation

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