[LLVMdev] Troubling promotion of return value to Integer ...

[Chris Lattner]

On May 16, 2008, at 4:07 PM, <Alireza.Moshtaghi at microchip.com> wrote:

> To me, this “optimization” problem doesn’t seem to be a consequence  
> of doing the promotion differently than what is currently being done  
> in llvm.
> Anyways, I don’t agree that the information is completely lost.  
> Shouldn’t an llvm pass be able to figure out if the truncated value  
> is coming from a function call, and since it is aware of calling  
> convention, it should be able to deduce that tmp2 can really take  
> its value from function call?

No, because the callee and caller may be in different translation units.

-Chris

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