llvm dev - Sep 2006 - [LLVMdev] Help with pass registration

Dear guys,

    I have updated my LLVM to the top of CVS, and now I am getting
errors like this one below when I write new passes:

"llc: PassManagerT.h:387: void
llvm::PassManagerT<Trait>::markPassUsed(const llvm::PassInfo*,
llvm::Pass*) [with Trait = llvm::FTraits]: Assertion
`getAnalysisOrNullUp(P) &&
dynamic_cast<ImmutablePass*>(getAnalysisOrNullUp(P)) && "Pass
available
but not found! " "Perhaps this is a module pass requiring a function
pass?"' failed."

Could someone give me pointers to know more about this type of errors? I
think I am not registering my new passes properly in the new llvm
distribution,
because I am getting this even if I try to write a very simple machine
function pass that only returns false and preserves all the other passes.

Thanks a lot,

Fernando

On Fri, 8 Sep 2006, Fernando Magno Quintao Pereira
wrote:
>    I have updated my LLVM to the top of CVS, and now I am getting
> errors like this one below when I write new passes:
What does your getAnalysisUsage method look like?

-Chris
> "llc: PassManagerT.h:387: void
> llvm::PassManagerT<Trait>::markPassUsed(const llvm::PassInfo*,
> llvm::Pass*) [with Trait = llvm::FTraits]: Assertion
> `getAnalysisOrNullUp(P) &&
> dynamic_cast<ImmutablePass*>(getAnalysisOrNullUp(P)) &&
"Pass available
> but not found! " "Perhaps this is a module pass requiring a
function
> pass?"' failed."
>
> Could someone give me pointers to know more about this type of errors? I
> think I am not registering my new passes properly in the new llvm
> distribution,
> because I am getting this even if I try to write a very simple machine
> function pass that only returns false and preserves all the other passes.
>
> Thanks a lot,
>
> Fernando
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
-Chris

-- 
http://nondot.org/sabre/
http://llvm.org/

> >    I have updated my LLVM to the top of CVS, and now I am getting
> > errors like this one below when I write new passes:
>
> What does your getAnalysisUsage method look like?
>
Chris,

    I think I've figured the problem out. I have a very basic question
though. What is the difference between addRequired, and addRequiredID?
For instance, in RegAllocLocal.cpp, you have both:

AU.addRequired<LiveVariables>();
AU.addRequiredID(PHIEliminationID);

    When should I use one, and when the other should be used?

Thanks a lot,

Fernando