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Old 2020-10-26, 22:44   #7
retina's Avatar
"The unspeakable one"
Jun 2006
My evil lair

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Originally Posted by xilman View Post
So what happens if I hand-craft an executable file which contains such an instruction and then try to execute it?
If the instruction is not supported then you get an exception. You can test it with an older OS not aware of AVX and try executing some AVX instructions on a newer CPU.
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