[cxx-abi-dev] mangling vector types

David Vandevoorde daveed at edg.com
Wed Nov 11 21:56:09 UTC 2009


On Nov 11, 2009, at 4:35 PM, Jason Merrill wrote:

> On 11/11/2009 04:33 PM, Jason Merrill wrote:
>>>> Dv <n_elements number> _ <element type>
>>
>> Though a plain /number/ there doesn't allow for template  
>> substitution.
>> Perhaps
>>
>> Dv _ <expression> _ <element type>
>>
>> when the number of elements is value-dependent?


Ah yes: That looks good.


> ...in which case we could go back to the log2 idea for the non- 
> dependent case.


I could go either way on that.  I suppose some day someone might  
decide to pack 5 24-bit integers in a 128-bit register, and then the  
log2 approach would require revision again (but that would be entirely  
feasible, I think).

	Daveed




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