[LLVMdev] Creating and implementing an analysis group out of tree

[Jeremy Salwen]

Eli, I'm referring to building a project in its own directory, without a
copy of the llvm source being involved at all. If I grep for
RegisterAnalysisGroup it only shows up in the header file it's defined, and
in the docs directory. (RegisterPass does show up however, just not in all
of the passes).

John, thanks, I'm taking a look at poolalloc.  It doesn't seem to compile
with the latest SVN, but hopefully the code regarding analysis groups is up
to date[1]

Jeremy

[1] I had to make some changes for headers being moved around, but after
doing so, I still got error messages

llvm[2]: Compiling AddressTakenAnalysis.cpp for Release+Asserts build (PIC)
> AddressTakenAnalysis.cpp: In function ‘bool isAddressTaken(llvm::Value*)’:
> AddressTakenAnalysis.cpp:39:16: error: cannot convert ‘llvm::Use’ to
> ‘llvm::User*’ in initialization
>      User *U = *I;
>                 ^
> AddressTakenAnalysis.cpp:63:25: error: no matching function for call to
> ‘llvm::CallSite::isCallee(llvm::Value::use_iterator&)’
>        if (!CS.isCallee(I))
>                          ^
> AddressTakenAnalysis.cpp:63:25: note: candidates are:
> In file included from AddressTakenAnalysis.cpp:25:0:
> /home/jeremy/hardware/llvm/llvmsource/llvm-toolchain-snapshot-3.5~svn209039/include/llvm/IR/CallSite.h:106:8:
> note: bool llvm::CallSiteBase<FunTy, ValTy, UserTy, InstrTy, CallTy,
> InvokeTy, IterTy>::isCallee(llvm::Value::const_user_iterator) const [with
> FunTy = llvm::Function; ValTy = llvm::Value; UserTy = llvm::User; InstrTy =
> llvm::Instruction; CallTy = llvm::CallInst; InvokeTy = llvm::InvokeInst;
> IterTy = llvm::Use*; llvm::Value::const_user_iterator =
> llvm::Value::user_iterator_impl<const llvm::User>]
>    bool isCallee(Value::const_user_iterator UI) const {
>         ^
> /home/jeremy/hardware/llvm/llvmsource/llvm-toolchain-snapshot-3.5~svn209039/include/llvm/IR/CallSite.h:106:8:
> note:   no known conversion for argument 1 from ‘llvm::Value::use_iterator’
> to ‘llvm::Value::const_user_iterator {aka
> llvm::Value::user_iterator_impl<const llvm::User>}’
> /home/jeremy/hardware/llvm/llvmsource/llvm-toolchain-snapshot-3.5~svn209039/include/llvm/IR/CallSite.h:111:8:
> note: bool llvm::CallSiteBase<FunTy, ValTy, UserTy, InstrTy, CallTy,
> InvokeTy, IterTy>::isCallee(const llvm::Use*) const [with FunTy =
> llvm::Function; ValTy = llvm::Value; UserTy = llvm::User; InstrTy =
> llvm::Instruction; CallTy = llvm::CallInst; InvokeTy = llvm::InvokeInst;
> IterTy = llvm::Use*]
>    bool isCallee(const Use *U) const { return getCallee() == U; }
>         ^
> /home/jeremy/hardware/llvm/llvmsource/llvm-toolchain-snapshot-3.5~svn209039/include/llvm/IR/CallSite.h:111:8:
> note:   no known conversion for argument 1 from ‘llvm::Value::use_iterator’
> to ‘const llvm::Use*’
>
>


On Thu, Jun 12, 2014 at 5:06 PM, John Criswell <criswell at illinois.edu>
wrote:

>  On 6/12/14, 3:46 PM, Jeremy Salwen wrote:
>
>  Hi Eli,
>
> Thanks for the link! I'm able to compile a standalone pass outside of the
> source tree, and I'm obviously ably to compile analysis groups inside the
> source tree.  However, the problem comes when I try to do what the tutorial
> suggests to create an analysis group outside of the source tree.
>
> My understanding is that building out of tree requires different methods
> to register the passes.  For example, the class RegisterPass, which the
> tutorial instructs you to use (and is used by sample repository you
> linked), never shows up in the source tree.  Likewise for
> RegisterAnalysisGroup.  Furthermore I've found that just copying the way
> it's done in the source tree and not using RegisterPass causes opt to not
> recognize your command-line arguments.
>
>  Do you know of any other projects that will demonstrate how to build
> passes out of tree, only creating an analysis group as well?
>
>
> The poolalloc and SAFECode projects have analysis groups.  For directions
> on downloading the code, please see
> http://sva.cs.illinois.edu/docs/Install.html.
>
> Regards,
>
> John Criswell
>
>
>  Thanks
>  Jeremy
>
>
> On Thu, Jun 12, 2014 at 4:20 PM, Eli Bendersky <eliben at google.com> wrote:
>
>>
>>
>>
>>  On Thu, Jun 12, 2014 at 1:10 PM, Jeremy Salwen <jeremysalwen at gmail.com>
>> wrote:
>>
>>>   Hello all,
>>>
>>>  I'm trying to follow the guide
>>> http://llvm.org/docs/WritingAnLLVMPass.html to build an some passes and
>>> analysis groups out of tree. However, I'm having some trouble with crashes
>>> when I try to follow the guide.
>>> The first section provides a very useful example of what the whole .cpp
>>> file should look like for the HelloWorld pass.  Obviously it's a bit more
>>> complex to write the whole setup with an analysis group, an analysis pass,
>>> and a transform pass that uses the analysis, but example code would be
>>> extremely helpful, and could serve as a good starting point for anyone who
>>> wants to do something similar.  Is there anywhere i could find such example
>>> code, perhaps as part of a project, that demonstrates how to define and use
>>> an analysis group out of tree?
>>>
>>
>>   It's not entirely clear which part you're having a problem with. If
>> it's creating an analysis group, there should be samples within the LLVM
>> source code. If it's building out-of-tree, take a look at
>> https://github.com/eliben/llvm-clang-samples -- it's a repository with a
>> bunch of LLVM/Clang samples, all built out of tree. It keeps pretty close
>> track to ToT, as well as having branches for prior releases (3.3 and 3.4,
>> for now).
>>
>>  Eli
>>
>>
>>
>
>
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