mode of CONST_INT

mode of CONST_INT

[Rajiv KI]

Hi all,

I have one doubt to clarify :

Mode of RTL expression 'CONST_INT' is VOIDmode. Is there any way i can make
its mode to SImode or any other mode even.

I have tried PUT_MODE macro.As CONST_INT has only one operand as 'w' (wide
integer).I think due to that It was not effective.

Please help me in resolving this.

Rajiv.
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Re: mode of CONST_INT

[Ian Lance Taylor]

Rajiv KI <rajivkumarsingla@gmx.com> writes:

> Mode of RTL expression 'CONST_INT' is VOIDmode. Is there any way i can make
> its mode to SImode or any other mode even.
>
> I have tried PUT_MODE macro.As CONST_INT has only one operand as 'w' (wide
> integer).I think due to that It was not effective.
>
> Please help me in resolving this.

By definition CONST_INT rtxes have no mode.  They take on whatever
mode the context requires.  This is indeed awkward in some cases, and
sometimes requires maintaining the mode separately.

Ian

Re: mode of CONST_INT

[Rajiv KI]

Ian Lance Taylor-3 wrote:
> 
> Rajiv KI <rajivkumarsingla@gmx.com> writes:
> 
>> Mode of RTL expression 'CONST_INT' is VOIDmode. Is there any way i can
>> make
>> its mode to SImode or any other mode even.
>>
>> I have tried PUT_MODE macro.As CONST_INT has only one operand as 'w'
>> (wide
>> integer).I think due to that It was not effective.
>>
>> Please help me in resolving this.
> 
> By definition CONST_INT rtxes have no mode.  They take on whatever
> mode the context requires.  This is indeed awkward in some cases, and
> sometimes requires maintaining the mode separately.
> 
> Ian
> 
> 

Hi,

Ya its really not fine that it takes whatever mode. 

Please tell is there any way in gcc by which i can separately maintain mode
of 'CONST_INT' RTX.

Rajiv.


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Re: mode of CONST_INT

[Ian Lance Taylor]

Rajiv KI <rajivkumarsingla@gmx.com> writes:

> Ian Lance Taylor-3 wrote:
>> 
>> By definition CONST_INT rtxes have no mode.  They take on whatever
>> mode the context requires.  This is indeed awkward in some cases, and
>> sometimes requires maintaining the mode separately.
>> 
>> Ian
>> 
>> 
>
> Ya its really not fine that it takes whatever mode. 
>
> Please tell is there any way in gcc by which i can separately maintain mode
> of 'CONST_INT' RTX.

You have to provide a mode for any case where you might see a
CONST_INT.  The gcc middle-end and backends already does this, because
they must.

Ian