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<p class=MsoNormal>Hi all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Please consider applying the attached patch. Currently on
Windows x86-64 the processor features are not detected because the inline assembly
(which Visual C++ deprecated for x64) does not have an alternative that uses
intrinsics. Later tests for x86-64 then only enable SSE2, leaving any more
recent instruction set unused.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The patch uses the __cpuid intrinsic that compile under
32-bit as well as 64-bit. I’ve only tested it with my own experimental
project on Windows x64 but I see no potential issues for other platforms. A
potential additional improvement would be to cause a compiler error when the GetCpuIDAndInfo
does not compile to the intended code, and to remove the test that follows
right after <span style='font-size:10.0pt;font-family:"Courier New"'>AutoDetectSubtargetFeatures()</span>
has been called.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Kind regards,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Nicolas<o:p></o:p></p>
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