llvm dev - Dec 2011 - [LLVMdev] bdver1 cpu(bulldozer) support with dragonegg

On 30.11.2011, at 08:33, Duncan Sands wrote:
> Hi Jan,
> 
>> if I compile with dragonegg and -march=native I get this message:
>> 'bdver1' is not a recognized processor for this target
(ignoring processor)
> 
> this is coming directly from LLVM which doesn't know about bulldozer
yet.
> 
>> Is there any plan to support this cpu ?
> 
> I don't know.  Hopefully someone who knows something about this will
comment.
I added a basic description for bdver1 and bdver2 in r145493.
LLVM doesn't know many of bulldozer's new instructions though.

- Ben
> 
> Ciao, Duncan.
> 
>> 
>> 
>> Here the full example the source file doesn't matter.
>> 
>> gcc -s -static -Wall -O2 -march=native -fplugin=dragonegg.so
>> -fplugin-arg-dragonegg-enable-gcc-optzns    pointer.c   -o pointer
>> 'bdver1' is not a recognized processor for this target
(ignoring processor)
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> 
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> I added a basic description for bdver1 and bdver2 in r145493.
> LLVM doesn't know many of bulldozer's new instructions though.
Thanks Ben!

Ciao, Duncan.

Benjamin Kramer <benny.kra at googlemail.com> writes:
> On 30.11.2011, at 08:33, Duncan Sands wrote:
>
>> Hi Jan,
>> 
>>> if I compile with dragonegg and -march=native I get this message:
>>> 'bdver1' is not a recognized processor for this target
(ignoring processor)
>> 
>> this is coming directly from LLVM which doesn't know about
bulldozer yet.
>> 
>>> Is there any plan to support this cpu ?
>> 
>> I don't know.  Hopefully someone who knows something about this
will comment.
>
> I added a basic description for bdver1 and bdver2 in r145493.
> LLVM doesn't know many of bulldozer's new instructions though.
We have implementations for XOP.  Again, I'll be pushing it back as soon
as we get 3.0 merged.  That will take a bit of effort as we have to
resolve various AVX conflicts.

                               -Dave

Better be quick! I am adding FMA4 and XOP now, and if you contribute code before
I do, you can spare yourself some XOP merging.

- Jan



----- Original Message -----
> From: David A. Greene <greened at obbligato.org>
> To: Benjamin Kramer <benny.kra at googlemail.com>
> Cc: llvmdev at cs.uiuc.edu
> Sent: Thursday, December 1, 2011 12:19 PM
> Subject: Re: [LLVMdev] bdver1 cpu(bulldozer) support with dragonegg
> 
> Benjamin Kramer <benny.kra at googlemail.com> writes:
> 
>>  On 30.11.2011, at 08:33, Duncan Sands wrote:
>> 
>>>  Hi Jan,
>>> 
>>>>  if I compile with dragonegg and -march=native I get this
message:
>>>>  'bdver1' is not a recognized processor for this target
> (ignoring processor)
>>> 
>>>  this is coming directly from LLVM which doesn't know about 
> bulldozer yet.
>>> 
>>>>  Is there any plan to support this cpu ?
>>> 
>>>  I don't know.  Hopefully someone who knows something about
this
> will comment.
>> 
>>  I added a basic description for bdver1 and bdver2 in r145493.
>>  LLVM doesn't know many of bulldozer's new instructions though.
> 
> We have implementations for XOP.  Again, I'll be pushing it back as
soon
> as we get 3.0 merged.  That will take a bit of effort as we have to
> resolve various AVX conflicts.
> 
>                                -Dave
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>