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Re: target specific builtin expansion (middle end and back end definition inconsistence problem?).


Feng LI <nemokingdom@gmail.com> writes:

> Hi Ian,
>
> 2012/4/22 Ian Lance Taylor <iant@google.com>:
>> Feng LI <nemokingdom@gmail.com> writes:
>>
>>> Yes, you are right. But how could I reference to a backend defined builtin
>>> function in the middle end (I need to generate the builtin function in the
>>> middle end and expand it in x86 backend)?
>>
>> If the function doesn't have a machine-independent definition, then use
>> a target hook.
>
> Then I remove the duplicate builtin definition in x86 backend.
> I define the builtin function with built_in_class as BUILT_IN_MD in
> builtins.def.

Sorry, I meant use a target hook to actually generate the call
expression.  The target hook can refer to the target-specific builtin
function.

Ian


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