llvm dev - Dec 2002 - [LLVMdev] DSNode Question

LLVM,

I am trying to equate two dsnodes across call boundries.  On the Caller 
side we have an operand of form:
 sbyte * getelementptr ([20 x sbyte]* %.LC0, long 0, long 0)
using getNodeForValue() yields a NULL pointer.

On the Callee, the parameter is of form:
sbyte * S
and getNodeForValue works fine.  Is there something special that must be 
done to access DNodes accessed using GEP?

Thanks,
Dave

> I am trying to equate two dsnodes across call boundries.  On the Caller
> side we have an operand of form:
>  sbyte * getelementptr ([20 x sbyte]* %.LC0, long 0, long 0)
> using getNodeForValue() yields a NULL pointer.
This wierd device is a "constantexpr": the object is actually a
subclass
of Constant (because it evaluates to a link time constant), so I think the
node is getting elided.  Vikram just checked in a fix that will probably
fix this, he can provide details...

-Chris

-- 
http://llvm.cs.uiuc.edu/
http://www.nondot.org/~sabre/Projects/

I am not seeing this fix in the csil tree....

On Fri, 6 Dec 2002, Chris Lattner wrote:
> > I am trying to equate two dsnodes across call boundries.  On the
Caller
> > side we have an operand of form:
> >  sbyte * getelementptr ([20 x sbyte]* %.LC0, long 0, long 0)
> > using getNodeForValue() yields a NULL pointer.
> 
> This wierd device is a "constantexpr": the object is actually a
subclass
> of Constant (because it evaluates to a link time constant), so I think the
> node is getting elided.  Vikram just checked in a fix that will probably
> fix this, he can provide details...
> 
> -Chris
> 
>