[LLVMdev] New Alias Analysis Algorithm

[Hal Finkel]

Hi George,

Are you working on this in a publicly-accessible repository?

When you say it will be a function pass, you mean a function-level analysis pass? Would making it a CGSCC pass be significantly more expensive?

 -Hal

----- Original Message -----
> From: "George Burgess" <gbiv at google.com>
> To: llvmdev at cs.uiuc.edu
> Sent: Tuesday, June 10, 2014 3:45:56 PM
> Subject: [LLVMdev] New Alias Analysis Algorithm
> 
> 
> 
> 
> Hello LLVMDev,
> 
> 
> I'm George, an intern for Google who will be working on LLVM.
> Currently, I'm starting to implement a set-based Alias Analysis
> algorithm for LLVM, which looks like it may be more accurate than
> Steensgard's, and can be constructed in approximately nlog(n) time
> and linear space (n = number of memory locations; queries happen in
> constant time). It will most likely be implemented as a function
> pass, and if all goes well, I hope to have it committed.
> 
> 
> If you would like more information about the algorithm, see link [1]
> below. If you're interested in rationale behind algorithm selection,
> a few of the implementation details, and a summary of how it works,
> see [2] below. As an aside, chandlerc has warned me that LLVM isn't
> quite perfect about notifying all function passes that transforms
> have been applied to a function. This is known, and will be taken
> into account as best as possible. :)
> 
> 
> If you have any questions, suggestions, comments, etc. about this,
> then feel free to ping me,
> George
> 
> 
> [1] -
> http://www.cse.cuhk.edu.hk/lyu/_media/paper/pldi2013.pdf?id=home&cache=cache
> 
> [2] -
> https://docs.google.com/a/google.com/document/d/1lgKGuVoMVXBnqqT6fGNtgvx4P0I8fJbMPqeuGL9GoNU/pub
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory