similar to: [LLVMdev] [Fwd: Re: problem with multiple LLVM passes]

I'm trying to write two LLVM passes, one of which uses the results of the other. The first is LiveVars and the second is RemoveUseless. In the RemoveUseless class I have: virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.addRequired<LiveVars>(); } This compiles fine, but when I try to run it I get an error: Pass class not registered! The error goes

I have seen INITIALIZE_PASS(LiveVariables, "livevars", "Live Variable Analysis", false, false); in the llvm/lib/codegen/LiveVariables.cpp, where LiveVariables is a subclass of MachineFunctionPass, and #define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \ static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis) in PassSupport.h Is this code used

Hi, I notice that there are several different methods called inside getAnalysisUsage(). The parameters of addRequiredID and addPreservedID are passID. What is the difference between Required and Preserved? There are also function named addRequired<PassName>() called. What is the difference between addRequired<PassName>() and addRequiredID(PassID)? Thanks a lot! Best,

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

Rakesh Komuravelli wrote: > Hi, > > I am writing an LLVM Pass and I would like to know how would I do the > following: > > 1. I have a function foo, and I need to get all the call points calling > this function in each Function of the Module. The only way I can think > of is to iterate over the BasicBlocks of each Function, look for all the > Call Instructions and

Hi, I am trying to set a prerequisite pass. void PassName::getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll(); AU.addRequired<LiveVariables>(); } But when i am running the pass with the opt i get this error: undefined symbol: _ZN4llvm13LiveVariables2IDE If you need more information ... Thank you. -------------- next part -------------- An HTML

Trevor Harmon wrote: > On Jul 22, 2010, at 2:05 PM, John Criswell wrote: > > >> If you write your pass as a ModulePass, then you can iterate over the >> functions in any order that you want. >> > > I had considered that, but my FunctionPass depends on other passes > processing the functions first: > Two things to consider: 1) The PassManager

Hi, thank you for your explanations. In order to get a pre-RA scheduling, I would need something like: - LiveVars - PhiElim - TwoAddr - LiveIntervals - Coalescing - Scheduler (new) - SlotIndexing - LiveIntervals2 (new) - RegAllocMy qeustion then is, is it really so difficult to create the live intervals information, with modifications to the original algorithm, or even from scratch?

On May 24, 2011, at 8:22 AM, Jonas Paulsson wrote: > Hi (Jakob), > > in reference to the prior message below, I have the following follow-up questions, as I also need a scheduling pass > prior to regalloc. I need to do this in order to set VLIW-flags, so that the RA is aware of several MI's > per cycle with a redefined LiveRange::overlap-function. On a multiple-issue cycle, a

On Oct 30, 2012, at 3:15 PM, Krzysztof Parzyszek <kparzysz at codeaurora.org> wrote: > On 10/30/2012 4:10 PM, Ashwin kumar wrote: >> >> Assertion failed: (PI && "Expected required passes to be initialized"), >> function schedulePass, file PassManager.cpp, line 597. >> >> >> I register the passes using RegisterPass function call.

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hi all, I am looking for a program or cgi script which can be used to change the smbpasswd via web browser. Anyone done this already ?. Any pointers will he appreciated much. Thanks rakesh -------------------------------------------------------------------- Rakesh Jain Systems Administrator, MIS Dept BEA Systems, Inc. voice: +1-972-943-5135 4965, Preston Park Blvd fax:

John Criswell wrote: > Trevor Harmon wrote: >> On Jul 22, 2010, at 2:05 PM, John Criswell wrote: >> >> >>> If you write your pass as a ModulePass, then you can iterate over the >>> functions in any order that you want. >>> >> >> I had considered that, but my FunctionPass depends on other passes >> processing the functions first:

Hi all, I was trying to implement an obfuscation tool for C-code on the basis of LLVM. I got a prototype of the simple obfuscation transformation which converting control flow graph to something like a state machine. I am not sure I will have time to work on extending further this tool with new transformations like opaque predicates and decided to put here source code I have by now with hope

Hello, I have written a custom LLVM Loop Pass that perforates a loop by changing the increment value for the induction variable. I am able to run this pass using the opt command and loading the shared object library from Debug+Asserts as detailed in http://llvm.org/docs/WritingAnLLVMPass.html I was wondering if this pass can be used in clang somehow. I have read about "-mllvm"

Thanks for reviving this. I completely forgot the details but I resolved this problem. Looking though the code, seems I forked RewriteStatepointsForGC pass, and change it to adding 'gc-livevars' bundle to the call/invoke inst after finding the livevars, instead of changing it to StatepointCall intrinsic. On Wed, Nov 14, 2018 at 11:48 AM Philip Reames <listmail at philipreames.com>

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Hallo, Does Rsync support XATTR sync between nodes? Using setfattr -n user.line -v 100 <File Name> setfattr -n user.creator -v ?Rakesh Kumar Bhatia? <File Name> will create extended attribute for different files. I used rsync -av <source> <destination> to copy the files. extended attributes are missing in the destination path. Can use the command

Remove unused variable in btrfs-image.c (update_super) and update man page documentation about -r option. Running btrfsck on a restored image produces missing chunk information. This is because by default, btrfs-image fixes up chunk tree to use 1 stripe pointing to the primary device. This in turns results in btrfsck making some noise. $ ./mkfs.btrfs /dev/sdb2 -f $ ./btrfs-image /dev/sdb2

Correct me if I'm wrong, but is Module::CreateRNG(Pass *) unusable with the new PassManager? Since each pass is defined as a llvm::PassInfoMixIn<DerivedT> instead of inheriting from llvm::Pass, it doesn't seem possible to obtain the underlying llvm::Pass * from e.g. llvm::ModuleAnalysisManager. Would it make sense to change the definition/implementation to Module::CreateRNG(StringRef