llvm dev - Oct 2017 - Setters for `addrspace`?

Hello all,

I've found the need to fixup address spaces in some code I'm writing.
I'm
puzzled by the fact that there are no setters for `addrspace`: For example,
in GetElementPtrInst's API, or in `CastInst` and its subclasses.

I believe there is some rationale for this I'm missing. Could someone
please fill me in?

Cheers,
~Siddharth.
-- 
Sending this from my phone, please excuse any typos!
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Hi Siddharth,

The addrspace is a property of pointer types, not of instructions.  But 
types are immutable.  And if I'm not mistaken you can't change the 
target type of a CastInst.  To set the addrspace of the target type of a 
CastInst, you have to create a new pointer type with the desired 
addrspace and create a new CastInst with this type as the target type.  
You may want to `replaceUsesOfWith` the old with the new instruction and 
/ or delete the old instruction as well.

-Manuel

On 2017-10-14 00:54, (IIIT) Siddharth Bhat via llvm-dev
wrote:
> Hello all,
> 
> I've found the need to fixup address spaces in some code I'm
writing.
> I'm
> puzzled by the fact that there are no setters for `addrspace`: For 
> example,
> in GetElementPtrInst's API, or in `CastInst` and its subclasses.
> 
> I believe there is some rationale for this I'm missing. Could someone
> please fill me in?
> 
> Cheers,
> ~Siddharth.
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev