similar to: How to optimize a large project in llvm pass?

Hi all, I was wondering if there's any way to pass command line arguments to LLVM optimization passes when run through the opt tool. For example, suppose I register called MyPass, then I want to run opt -load libMyPass.so -MyPass 3 < input.bc and have "3" be available to MyPass as a kind of argv argumnet through some method. Or does it take a major rewrite of the opt tool

Hi, I have a module pass and I hope to use it to optimize a real-world program. I need LTO，and I have got LTO plugin. But How can I add my passes to LTO Pass. I can't find solution. What should I do? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200422/76d2b046/attachment.html>

A follow-up question: Is there a way to make different passes accept one command line option that will affect all of them? For example, I'd like to have a -optStrength parameter, that can be given to all of my passes simultaneously. Thanks a lot, Guy Arnaud Allard de Grandmaison wrote: > > Hi Harel, > > Several existing passes can take command line arguments. Have a look at

Hi Harel, Several existing passes can take command line arguments. Have a look at lib/Transforms/Scalar/LoopUnrollPass.cpp for example. Its command line arguments are defined using the cl::opt objects. Best regards, -- Arnaud de Grandmaison ________________________________ From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Harel Cain Sent: Thursday, January

You could make the cl:opt object visible outside one of your passes, and use it in your other passes : in other words, it is a global variable shared between several files. Best regards, -- Arnaud de Grandmaison -----Original Message----- From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of guyadini Sent: Thursday, January 27, 2011 12:38 PM To: llvmdev at

Hi Eli, I know the page, and the only mentioning about LTO or link time optimization I found is the option PassManagerBuilder::EP_FullLinkTimeOptimizationLast - and nobody knows how this works (and asked about it on this list too before with no reply), and the author who wrote that part in the llvm code at Redhat did not reply to a question how to actually use it. And there is no example code or

Hi all, This is a problem that occurs for me only on Darwin (MacOS) and not on Linux. When llvm 2.8 (or 2.9) is compiled with ENABLE_OPTIMIZED=1, the "opt" tool fails to load LLVM passes in dynamic libraries (.dylib) files, regardless of how they themselves were built. When opt is built with ENABLE_OPTIMIZED=0, all is well. Here is some informative output. Seems to me the problem is

I see now that this clearly to the problem raised elswhere, for example: http://lists.cs.uiuc.edu/pipermail/llvmdev/2010-December/036764.html http://lists.cs.uiuc.edu/pipermail/llvmdev/2010-November/036289.html So clearly a repeating issue on the MacOS platform. Harel On Sun, Dec 12, 2010 at 5:10 PM, Harel Cain <harel.cain at gmail.com> wrote: > Hi all, > > This is a problem

HI Eli, that sounds like the -mllvm option would be a good a mention in the WritingAnLLVMPass document ;-) Two further questions for this and I am keeping this on the list so other people have pointers to this if they struggle with the same thing: 1. Does this require to use lld? (I am sure it is, just to clarify, for the very low chance that it would also work with gnu ld and the llvm gold

Hello, I have written a pass for the IR and I can run it with opt -load lib/LLVMMyPass.so -mypass -myarguments -S -o output.ll < output.bc I have registered my pass with the following code: static RegisterPass<MyPass> X("mypass", "MyPass Pass (with getAnalysisUsage implemented)"); How do I include the same pass in the clang driver. I tried running the pass: clang

Hello all, Still, is it impossible to use the external llvm custom pass on windows? I can build the 'mypass.dll' on windows using LLVM libraries. And, I use these 2 way to use my pass. clang.exe -Xclang -load -Xclang mypass.dll -c test.c opt.exe -load -Xclang mypass.dll -mypass test.bc -o optimized_test.bc But, Clang and opt didn't working well with my pass. This mean, my pass

Unless mem2reg does something other than my understanding of it, I can't see why any pass would "require" that... It is not guaranteed to do anything to any particular piece of code, so relying on it seems very unreliable, I would think. -- Mats On 22 March 2016 at 04:32, Kevin Hu via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Hi, > > > Is there any way that

Hi, as in the subject, is it possible to call on of the analysis pass present in the LLVM (lib/ folder) within a tool pass (tools/ folder)? Thanks. Best, Simone

Hello, I am developing an LTO instrumentation of programs for fuzzing (for afl++) and I run into the following problem: a lot of open source program have multiple definitons of the same functions. In normal compile mode this is not a problem, however with LTO this only works with the linker option: -Wl,--allow-multiple-definition Now to be able to instrument (it is an "opt"

I have used the following command for my pass (without -mem2reg): clang -Xclang -load -Xclang MYPASS.so -c ../../tests/test1.c For mem2reg, I tried the following: clang -mllvm -mem2reg -Xclang -load -Xclang MYPASS.so -c ../../tests/test1.c On Mon, Mar 21, 2016 at 9:26 PM, Mehdi Amini <mehdi.amini at apple.com> wrote: > >> On Mar 21, 2016, at 6:23 PM, Syed Rafiul Hussain

Hi Eli, I have tried that: static void registerMyPass(const PassManagerBuilder &, llvm::legacy::PassManagerBase &PM) { PM.add(new MyPass()); } static RegisterStandardPasses RegisterMyPass(PassManagerBuilder::EP_OptimizerLast, registerMyPass); It still couldn't find my pass. Regards, Soham Sinha PhD Student,

I have my own llvm pass which requires mem2reg. It worked fine with opt. However, I was trying to make it work with clang as I needed it to run some spec cpu benchmarks. Is there any way that I can mention mem2reg (PromotePass) pass as a pre-requisite in my own pass's implementation? On Mon, Mar 21, 2016 at 9:01 PM, Mehdi Amini <mehdi.amini at apple.com> wrote: > Hi, > > You

On 11/24/16 3:12 AM, Arnaud De Grandmaison via llvm-dev wrote: > > Hi Sandeep, > > The CMake version of the test-suite has been improved (see > https://reviews.llvm.org/D21360) so that it’s easy to plug additional > test suites. A starting point would be to look at how the > TEST_SUITE_SUBDIRS variable in the top level CMakeLists.txt is used. > I think this bug report

Jack, Could you, please, submit a bug report? -- including steps to reproduce (where you got imageMagick sources, how exactly you compiled them, etc) Andrey On Fri, May 1, 2015 at 3:56 PM, Jack Howarth <howarth.mailing.lists at gmail.com> wrote: > > > On Fri, May 1, 2015 at 4:45 AM, Andrey Bokhanko <andreybokhanko at gmail.com> > wrote: >> >> Chandler,

Hello List, I'm currently writing my own little optimization pass (on LLVM 6.0) and considered it a neat idea to fuzz it using llvm-opt-fuzzer, which in theory should be a ready-made tool for such jobs as far as I can tell, potentially helping me to find UB and Address issues in my pass. So I went ahead and followed the instructions in the build manual [1] to build LLVM's llvm-opt-fuzzer