llvm dev - Mar 2007 - [LLVMdev] Problems with one pass using another

Hi,

I have two function passes: AvailOut and HashGVN. AvailOut needs to use 
HashGVN. And they're built in the same shared object file.

But addRequired<HashGVN> fails with this error:

# opt -load ../../../build/Release/lib/LLVMGVN.so -hashgvn -availout
--debug-pass=Structure <basic.s.bc >basic.out.bc
opt: /proj/tbres/shanth/llvm/llvm-1.9/lib/VMCore/PassManagerT.h:387: void 
llvm::PassManagerT<Trait>::markPassUsed(const llvm::PassInfo*, 
llvm::Pass*) [withTrait = llvm::MTraits]: Assertion `getAnalysisOrNullUp(P)
&&
dynamic_cast<ImmutablePass*>(getAnalysisOrNullUp(P)) && "Pass
available
but not found! " "Perhaps this is a module pass requiring a function 
pass?"' failed.
opt((anonymous namespace)::PrintStackTrace()+0x14)[0x85ebe6c]

Does anyone see what I'm missing?

Thanks,
Prashanth

Hi Prashanth,

On Mar 25, 2007, at 11:43 PM, Prashanth Radhakrishnan wrote:
> Hi,
>
> I have two function passes: AvailOut and HashGVN. AvailOut needs to  
> use
> HashGVN. And they're built in the same shared object file.
>
> But addRequired<HashGVN> fails with this error:
>
> # opt -load ../../../build/Release/lib/LLVMGVN.so -hashgvn - 
> availout --debug-pass=Structure <basic.s.bc >basic.out.bc
> opt: /proj/tbres/shanth/llvm/llvm-1.9/lib/VMCore/PassManagerT.h: 
> 387: void
> llvm::PassManagerT<Trait>::markPassUsed(const llvm::PassInfo*,
> llvm::Pass*) [withTrait = llvm::MTraits]: Assertion  
> `getAnalysisOrNullUp(P) &&
> dynamic_cast<ImmutablePass*>(getAnalysisOrNullUp(P)) &&
"Pass
> available
> but not found! " "Perhaps this is a module pass requiring a
function
> pass?"' failed.
> opt((anonymous namespace)::PrintStackTrace()+0x14)[0x85ebe6c]
>
> Does anyone see what I'm missing?
Based on your limited description, It seems you're running into a  
Pass Manager bug.
However, Pass Manager is now re-written in current mainline cvs  
sources, so may be you
want to try new pass manager  ?

-
Devang

Hi Devang,
> Based on your limited description, It seems you're running into a  
> Pass Manager bug.
> However, Pass Manager is now re-written in current mainline cvs  
> sources, so may be you
> want to try new pass manager  ?
Thanks for the tip.

For now, I'm running them as a single pass. I'll try this sometime and 
get back to you.

- Prashanth