similar to: Instruction scheduling in LLVM

Hi Javed, On 06/18/10 14:07, Javed Absar wrote: > Hi: > I worked on loop-optimizations techniques previously using ORC. > Currently i see lots of research on speculative parallelization of > loops ... specially because multicores [for embedded systems] is > becoming popular. In other words, because you have > multiple cores, you can start some loops [Fast-Track] as if there is

Hi Tobias: Thanks for replying . So if I understand correctly, in LLVM currently, the Polyhedral model is being built ( LLVM IR -------> Poly Model ----------> LLVM IR ). This is for compile-time optimizations of loop-nests [e.g. loop-transformations to expose parallelism or improve locality etc]. Yes, thats great for optimizing loop-nests. As an additional, since the real value of LLVM

Thanks Reid/Jonathon for your replies. Reid, An important case against module level flags is that it wont allow changing or resetting section names e.g. int a; #pragma clang section bss = "xyz" int b; In case above, users would like to see only 'b' placed in 'xyz' and not 'a' as well. Link pointed to by Jonathon seems to require same behavior.

Hi Nadav (and others who are related to this issue) - I saw some discussions on loop vectorizer that you are planning to write. Do you foresee using Polyhedral Framework (polly project) in some way in that. Thanks J. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20121007/476abc1c/attachment.html>

Hello, I am a computer science student new to LLVM compiler infrastructure. Please guide me where to start from to learn LLVM in the most effective way. Thanks, Siddharth Shankar Swain -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170115/6855d875/attachment.html>

Hi I read on LLVM blog that meta-data has been implemented to coney debug information to run-time system. Can one use meta-data to convey developer specifc hints to run-time system (e.g. JIT compiler)? Keen to know your thoughts on this. Thanks Javed -- my homepage: http://www.javedabsar.com -------------- next part -------------- An HTML attachment was scrubbed... URL:

Yes running LLVM performance test suite with LTO and Thin LTO enabled. Thanks, Siddharth On Fri, May 11, 2018 at 7:32 PM, Teresa Johnson <tejohnson at google.com> wrote: > I'm not completely sure what you are asking. Are you looking for > performance benchmarks to use for LTO and ThinLTO testing? Or are you > asking how to build/run with LTO and ThinLTO? Are you asking how to

Hi Chris, Thanks for the suggestion i was trying to use the patch https://reviews.llvm.org/D30691 and ASTimporter concept for cross file analysis. Can u explain in details the approach u suggested ? What is `nm` on the object files ? Can u suggest some approach to start on this cross file analysis tool. Thanks, Siddharth On Tue, Sep 19, 2017 at 9:42 PM, Chris Bieneman <beanz at apple.com>

On Mon, Jun 21, 2010 at 1:12 AM, Javed Absar <javed.absar at gmail.com> wrote: > Hi Tobias: > > Thanks for replying . So if I understand correctly,  in LLVM currently, the > Polyhedral model is being built ( LLVM IR -------> Poly Model ----------> > LLVM IR ). > This is for compile-time optimizations of loop-nests [e.g. > loop-transformations to expose parallelism

Hi, Thanks for the info, If i only want to run performance test on benchmarks for LTO and Thin LTO enabled target, Can u suggest ways to do it ? I want to do it at my end. Thanks, Siddharth On Wed, May 2, 2018 at 7:03 PM, Teresa Johnson <tejohnson at google.com> wrote: > I've only measured performance on x86. There are some old results for SPEC > cpu2006 in the blog post here:

Hi Chris, Thanks for answering, Can u clarify on this comment mentioned in https://github.com/Z3Prover/z3/issues/861 . cplusplus no exception support · Issue #861 · Z3Prover/z3 · GitHub - LLVM's *source code* does not use exceptions for performance reasons and so is compiled by default with -fno-exceptions. When using LLVM's libraries via it's C++ interface it is important

Hi Phil, > I've been watching this presentation from a 2014 LLVM dev meeting Thanks for your sharing! I am reviewing: * The chapter 10 (Instruction Level Parallelism) and chapter 11 (Optimizing for Parallelism and Locality) of Compiler Principle[1] * Adding and Optimizing a Subtarget for MIScheduler[2] by Dave Estes * Scheduler for in-order processors - what's present and

Thanks. I am just trying to find a relocation and linking design for Hexagon architecture, whether to follow the MIPS style of relocation or other architecture style of relocation. Thats my question . Thats why i was asking about the functions and their differences Please guide. Thanks, Siddharth On Fri, Apr 21, 2017 at 8:37 PM, mats petersson <mats at planetcatfish.com> wrote: > If

Hi Siddharth, alternativly you can try this <https://github.com/rizsotto/scan-build>, it's written in Python. Regards, Laszlo On Sat, Apr 6, 2019 at 5:14 AM Artem Dergachev via cfe-dev < cfe-dev at lists.llvm.org> wrote: > Hi, > > I never tried it myself but i can try to help you with specific problems > that you're having if you disclose them. > >

Thanks for the reply. I was just asking about in general whatever header files are there in Targets/ for different architectures are not including any function except this processRelocationRef() to be used in RuntimeDyldELF.cpp or RuntimeDyldCOFF.cpp or RuntimeDyldMachO.cpp and i think these files are the ones which are actually doing the relocation and linking work. So what purpose do these

+Aaron because i think he uses scan-build on Windows more or less successfully. I won't have time for setting up a Windows machine for myself in the nearest future. Could you tell us exactly what you're doing and what exactly does it print to console, more in the spirit of http://www.catb.org/~esr/faqs/smart-questions.html ? > scan-build: Not supported for windows. Exiting...

Hopefully someone else on the dev list who has experience with LNT and the LLVM test-suite will chime in. I've never run it myself. Adding Mehdi since he ran it with LTO/ThinLTO. I found some documentation for the test-suite: https://llvm.org/docs/TestingGuide.html#test-suite-overview http://llvm.org/docs/lnt/quickstart.html http://llvm.org/docs/lnt/tests.html#llvm-cmake-test-suite But I

Thanks for reply, it was really helpful. Can u just be more specific and tell about processRelocationRef() and resolveRelocation() in Targets/RuntimeDyld(objectfile format)(arch).h and also in RuntimeDyldELF.cpp and how the same function is implemented in different ways in both the files ? Thanks, Siddharth On Thu, Apr 20, 2017 at 8:16 PM, mats petersson <mats at planetcatfish.com> wrote:

yeah so when LTO runs, in the linker, it uses the target to produce object code. In the sense of code generation for target arch. Thanks, Siddharth On Mon, Jan 29, 2018 at 11:03 PM, Teresa Johnson <tejohnson at google.com> wrote: > Can you be more specific? LTO/ThinLTO are target independent. You just > need to be using a linker that supports *LTO (gold, lld, ld64, eg). > Teresa

Hi Reid, Unfortunately yes, it is. > If we do go with approach 3, I'd recommend adding a single metadata attachment that controls all sections a global could possibly live in (text, data, rdata, bss). I agree with this, although I think using metadata here wouldn't be right - don't we need to use attributes when dropping metadata would cause miscompiles? I was considering adding