llvm dev - Apr 2009 - [LLVMdev] Math Library Intrinsics as native intrinsics

There seems to be some math library functions that are already built
into llvm as intrinsic(pow, exp, etc...) but there are lots that are not
built in yet. Is there currently work going on that is implementing
these? I do not want to duplicate work so I want to see what is out
there.

The math functions that I will be adding in are from the following spec,
section 6.

http://www.khronos.org/registry/cl/

 

 

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Hi Micah,
> There seems to be some math library functions that are already built
> into llvm as intrinsic(pow, exp, etc...) but there are lots that are not
> built in yet. Is there currently work going on that is implementing
> these? I do not want to duplicate work so I want to see what is out
> there.
another approach is to get rid of the llvm intrinsics, because they
don't buy you anything that you can't get with function attributes
and a list of libcalls.
> The math functions that I will be adding in are from the following spec,
> section 6.
> 
> http://www.khronos.org/registry/cl/
Ciao,

Duncan.

On Apr 8, 2009, at 12:43 AM, Duncan Sands wrote:
> Hi Micah,
>
>> There seems to be some math library functions that are already built
>> into llvm as intrinsic(pow, exp, etc...) but there are lots that  
>> are not
>> built in yet. Is there currently work going on that is implementing
>> these? I do not want to duplicate work so I want to see what is out
>> there.
>
> another approach is to get rid of the llvm intrinsics, because they
> don't buy you anything that you can't get with function attributes
> and a list of libcalls.
FWIW, the reason pow, exp, and others were added as intrinsics was to
allow them to be overloaded with vector types, and to allow them
to be legalized (split, scalarized, etc.).

Dan