similar to: Array access dependencies

Hi, Hopefully the video Michael posted will help you, thanks for posting. It's more useful to the user of these passes than the developer I guess (it describes the theoretical background, hurdles of the implementation etc.). But the two passes we describe, DependenceAnalysis and MemorySSA, have very clean interfaces so you shouldn't have a problem in that matter. You probably want to look

At the last LLVM Developer's Meeting, there was a talk about LLVM dependency analyses: https://www.youtube.com/watch?v=1e5y6WDbXCQ Michael Am Mo., 2. Nov. 2020 um 13:47 Uhr schrieb Anilava Kundu via llvm-dev <llvm-dev at lists.llvm.org>: > > Hi all > > I am relatively new to LLVM and I am still trying to work my way through. What I am trying to implement is a list of array

On 8/8/19 2:03 PM, Hal Finkel wrote: Hi, First, as a high-level note, you posted a link to a Google doc, and at the end of the Google doc, you have a list of questions that you'd like answered. In the future, please put the questions directly in the email. For one thing, more people will read your email than will open your Google doc. Second, having the questions in the email should allow a

> There is a fundamental problem with the way that ivdep is defined by Intel's current documentation, at least for C/C++. As you note in your Google doc, it essentially says that the optimizer may ignore loop-carried dependencies except for those dependencies it can definitely prove are present. These are not semantics that any other compiler can actually replicate, and is not equivalent to

Greetings, (I am reposting this email of mine, as I was informed that emails from the domain 'iith.ac.in' are sometimes being marked as spam) I am Aradhya Biswas, final year student of Computer Science and Engineering at Indian Institute of technology Hyderabad (IITH), and as mentioned in my previous email on the LLVM dev mailing list, I am interested to work towards the improvement of

vecremainder/novecremainder: Should the pragma simply call the vectorizer to attempt to vectorize the remainder loop, or should the vectorizer use a different method? > > Something like that. There were patches posted at some point to enable tail-loop vectorization. At this point, I imagine that you'd construct a VPlan with the vectorized tail. Yep, committed in

Hello all, We are students from Indian Institute of Technology(IIT), Hyderabad, we would like to propose the addition of the following pragmas in LLVM that aide in (or possibly increase the scope of) vectorization in LLVM (in comparison with other compilers). 1. ivdep 2. Nontemporal 3. [no]vecremainder 4. [no]mask_readwrite 5. [un]aligned Could you please

The GVN algorithm used in LLVM currently (I'm rewriting it) is the basic hash based RPO algorithm. The new one i'm writing is based on http://dl.acm.org/citation.cfm?id=512536 (see https://github.com/dberlin/llvm-gvn-rewrite) LLVM has different algorithms for both scalar PRE and load PRE. They are basically variants of standard PRE algorithms transformed into SSA, but with some

> On Oct 10, 2016, at 2:50 PM, Hal Finkel <hfinkel at anl.gov> wrote: > > > From: "Dangeti Tharun kumar via llvm-dev" <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> > To: llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org> > Cc: "Santanu Das" <cs15mtech11018 at iith.ac.in <mailto:cs15mtech11018 at

Hi, I am Adil Arun Dangui, a 3rd year B.Tech student at IIT Hyderabad with a CGPA of 9.17. I am interested in Compilers, Compiler Optimizations and excited about LLVM and Polly. I have some familiarity of LLVM structure as we studied it in the Compiler Engineering course at IITH. Here

Hi Dangeti, Ramakrishna, Adam, and Gerolf, >Yes this is an area that needs further improvement. We have some immediate plans to make these more useful. See the recent llvm-dev threads [1], [2]. It takes a lot of dedicated effort to make vectorization report easier to understand by ordinary programmers (i.e., those who are not compiler writers). Having done that for ICC ourselves, we truly

Hi Devs, I am Kamlesh Kumar,CS undergraduate at NIT Manipur,India. I have been programming in C/C++ for more than 3 year. I have gone through various LLVM Core libraries and it's tool as well implemented it in my project .I am well aware of core concepts related to LLVM and it's code base, I have read three books available at Safari Online Books 1. LLVM - Essentials 2. LLVM - Cookbook 3.

Dear community, Our team at IITH have been experimenting with loop-distribution pass in LLVM. We see the following results on few benchmarks. clang -O3 -mllvm -enable-loop-distribute -Rpass=loop-distribute file.c clang -O3 -mllvm -enable-loop-distribute -Rpass-analysis=loop-distribute file.c TORCH

The Loop Optimization Working Group had a survey about “canonical” loop required by each loop transformation or analysis. That is, what should we normalize a loop before running a certain loop pass. Here is the survey result: https://tinyurl.com/rhuzny2 (Note that there are two workspaces: “By precondition” and “Breakdown”) Best - Min > On Dec 22, 2019, at 2:40 AM, Shraiysh Vaishay via

sir, I am able to generate .bc file for other normal code but my problem how to run the pass source code. If I write some pass then how should I run that pass? so please if you can help me in this and thanks for your reply. On Thu, Jun 5, 2014 at 11:34 AM, Alexander Musman < alexander.musman at gmail.com> wrote: > You are trying to use the pass source code to generate .bc file, it

attaching screenshot of errors I got On Wed, Jun 4, 2014 at 11:07 PM, Prashanth Sharma <cs13m1017 at iith.ac.in> wrote: > sir, > that I already applied this.As I followed these steps:-please tell me > whered did i go wrong? > > 1. Checkout LLVM: > - cd LLVM > - svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm > 2. Checkout Clang: >

Hi, I am working on some changes to LazyValueInfo and I wanted to see how it was used in existing passes. Currently I can see that Jump Threading and Correlated Value Propagation are the 2 passes that use LazyValueInfo. However on the LLVM docs page of passes (http://llvm.org/docs/Passes.html <http://llvm.org/docs/Passes.html>), Correlated Value Propagation is not mentioned as a pass. Does

Ugh, that would be a “yes” then… -- Krzysztof Parzyszek kparzysz at quicinc.com<mailto:kparzysz at quicinc.com> AI tools development From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Krzysztof Parzyszek via llvm-dev Sent: Friday, September 27, 2019 10:05 AM To: Dangeti Tharun kumar <cs15mtech11002 at iith.ac.in>; llvm-dev at lists.llvm.org Subject: [EXT] Re:

On Mon, Jan 7, 2019 at 3:21 PM Dean Michael Berris <dean.berris at gmail.com> wrote: > On Mon, Jan 7, 2019 at 8:43 PM Dangeti Tharun kumar > <cs15mtech11002 at iith.ac.in> wrote: > > > > Hi Dean, > > > > I have tried with -instr-map-1 and -instr-map-2, it didn't work. > > > > Yeah, I'm looking through the code and it looks like

Hello everyone I am Rakshit Singla, a third year undergrad at IIT Hyderabad, India. I finished a basic compilers course last semester and am currently doing a compiler optimizations course. I have been exploring LLVM for the past few months (wrote a front-end for the Classroom Object Oriented Language and have been studying pieces of code.) I would like to work with LLVM and contribute to the