llvm dev - Oct 2010 - [LLVMdev] fix-point support

>Hi Jonas,
>
>> is there any work ongoing in the area of fix-point support for LLVM?
>
>not as far as I know.
>
>> If not, what would be required to implement it?
>
>I assume you are talking about support for fixed point in the clang
>front-end, rather than LLVM itself, since in LLVM IR presumably it
>would just be represented as operations on integers, or library calls.
>If indeed you want clang support you should ask on the clang mailing
>list.
>
>Ciao,
>
>Duncan.
>
Hi Duncan,

no, actually, I want to use special instructions in the ISA that handles
fix-point operands,
so I need a new type in the LLVM I/R and in the code-generator, I think, as well
as in Clang.

/Jonas

 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20101027/237659b4/attachment.html>

Hi Jonas,
>>>/  is there any work ongoing in the area of fix-point support for
LLVM?
> />
>>not as far as I know.
>>
>>>/  If not, what would be required to implement it?
> />
>>I assume you are talking about support for fixed point in the clang
>>front-end, rather than LLVM itself, since in LLVM IR presumably it
>>would just be represented as operations on integers, or library calls.
>>If indeed you want clang support you should ask on the clang mailing
>>list.
>>
>>Ciao,
>>
>>Duncan.
>>
>
> Hi Duncan,
>
> no, actually, I want to use special instructions in the ISA that handles
fix-point operands,
> so I need a new type in the LLVM I/R and in the code-generator, I think, as
well as in Clang.
to get started you could use integer types in the LLVM IR and create LLVM
intrinsics that represent the fixed point operations.  Introducing new types
is a lot of work, so best to work incrementally if possible.

Ciao,

Duncan.