Hi,
This patch adds vendor id detection for Hygon Dhyana CPUs. Could anyone help me with submit it?
More details can be found on:

---
fpcsrc/rtl/i386/mmx.pp | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fpcsrc/rtl/i386/mmx.pp b/fpcsrc/rtl/i386/mmx.pp index 46e18ada..59911f94 100644
--- a/fpcsrc/rtl/i386/mmx.pp
+++ b/fpcsrc/rtl/i386/mmx.pp
@@ -60,6 +60,7 @@ unit mmx;

   {$ASMMODE ATT}

{ return base type of processor: 0 - is Unknown, 10 - is AMD (AuthenticAMD), }
+ { 10 - is Hygon (HygonGenuine) } { 20 - is Intel (GenuineIntel) }

     function getdevel:byte;

@@ -79,6 +80,7 @@ unit mmx;
                 popl %ebx
             end;
             if ((_ebx=$68747541) and (_ecx=$444D4163) and (_edx=$69746E65)) then getdevel:=10;
+            if ((_ebx=$6f677948) and (_ecx=$656e6975) and (_edx=$6e65476e)) then getdevel:=10;
             if ((_ebx=$756E6547) and (_ecx=$6C65746E) and (_edx=$49656E69)) then getdevel:=20;
         end
     end;

Jinke Fan wrote

{ return base type of processor: 0 - is Unknown, 10 - is AMD (AuthenticAMD), } + { 10 - is Hygon (HygonGenuine) }

is there a problem here? AMD and Hygon are both listed as 10...

{ 20 - is Intel (GenuineIntel) } function getdevel:byte;

Why would this be needed? I just had to look up what this actually is and it doesn't seem to be necessary to distinguish between that particular CPU (quote from Wikipedia):

^Are you aware of any specifics of that processor that it would require a distinction and direct support for that CPU version, beside the geek factor?

^Ralf

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Hygon CPU originates from AMD technology and shares most of the architecture with AMD's family 17h, but with different CPU Vendor ID("HygonGenuine")/Family series number(Family 18h). So, Hygon CPU reuses the AMD's code path.

Thanks for your reply.

Best regards,
Jinke Fan

Dhyana process was the first generation of Hygon. And, "there is little to no differentiation between the chips".

The spec refer to:
https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf At the software level, code typically reuses AMD's code path as so far.

Best regards.
Jinke Fan