similar to: [LLVMdev] extending LLVM - basic block reordering

Dear All, To add to this, you can find examples of inserting NOPs for X86 in the CFI pass originally written at Lehigh University that we ported to 64-bit X86 for SVA: https://github.com/jtcriswell/SVA/blob/master/llvm/lib/Target/X86/X86CFIOptPass.cpp Alternatively, you could use an InlineAsm call at the LLVM IR level (which I think would be easier to implement). Regards, John Criswell On

My pass runs after optimization passes. On Thu, Jul 9, 2015 at 1:11 PM, David Chisnall <David.Chisnall at cl.cam.ac.uk> wrote: > Hi, > > What are you trying to achieve? Inserting NOPs into LLVM IR is likely to > be pointless, as optimisations (in the IR or SelectionDAG) will remove them > before machine code generation. If you want to insert NOPs into the > generated

Hi. I need to write a function pass that insert nop instruction in function. Examples of these instructions are: %nop = add i1 0, 0 or %nop = alloca i1, i1 0. This link couldn't help me: http://llvm.org/docs/ProgrammersManual.html#creating-and-inserting-new-instructions I need a clear example about inserting new instruction. Anyone can help me? Thanks. -------------- next part --------------

Dear all, I have prepared a new package to install in R, I tried to check my package and I got the following message ------------------------------------------------------------------------ 232sub141:~ zahra$ R CMD check /Users/zahra/Desktop/HighProbability * checking for working latex ... OK * using log directory '/Users/zahra/HighProbability.Rcheck' * using R version 2.6.2 (2008-02-08) *

Dear R Support Team, I am experiencing an issue with my R package during the `R CMD check` process. A non-standard file named `vert.txt` is being generated in the check directory, causing a NOTE in the check results. Despite adding `vert.txt` to `.Rbuildignore`, the file is still appearing. And, there are no commands in any part of my package's code that would generate this file. Here

hello, I have a graph and i use qgraph package to calculate centrality parameters. Now I want to know the maximum value of shortest path for each vertex with discarding the Inf value in short pathes. For this I use the ShortestPathLengths of centrality function in qgraph. but when I want to get the maximum the result is wrong. here is my code: cen<-centrality(Q)

Hello; I was planning to add a new instruction to the LLVM IR (and later to MIPS backend) for TLS(Thread level speculation) support. For this I tried to follow the steps described in http://llvm.org/docs/ExtendingLLVM dot html#instruction. But I could not find any llvm/lib/AsmParser/Lexer.l and llvm/lib/AsmParser/llvmAsmParser.y file in both the svn repository and the source code downloaded

Hi, I'm trying to follow the instructions on how to add a new bitcode instruction: http://llvm.org/docs/ExtendingLLVM.html This is my first foray into the guts of LLVM and I'm not sure I'm doing things the right way. I came up with a patch that adds a NOP (no operation) that will work with llvm-as, llvm-dis, and lli. It would be nice if one of the experts could take a look and give

Dear all, I have prepared a package to install in R. I followed all steps explained in "writing R extensions". Also I read the section "add-on package" in "R installation and administration". These documents refer to "R CMD INSTALL" command but I don't know how to use this command. My specific question is where should I type this command? In help

we just follow a common recommendation to start with intrinsics: http://llvm.org/docs/ExtendingLLVM.html - Elena From: Owen Anderson [mailto:resistor at mac.com] Sent: Sunday, October 26, 2014 23:57 To: Demikhovsky, Elena Cc: llvmdev at cs.uiuc.edu; dag at cray.com Subject: Re: [LLVMdev] Adding masked vector load and store intrinsics What is the motivation for using intrinsics

I was reading: https://llvm.org/docs/ExtendingLLVM.html And am heeding the warnings that come with new (derived) types. I'm trying to use LLVM to model chemicals. More specifically, there are several reactive groups that exist: salts, bases, acids, etc. that adequately represent their respective values. I, for obvious reasons, want to manifest those types in LLVM so I can type check a

Hi all, I need to use annotate inside the C++ code and want to know why doesn't it work? How can I modify my sources to use annotate inside the C++ code too? Thanks in advance. Sincerely, Hripsime. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120222/21e75ec8/attachment.html>

Hi,all. I've been reading the llvm source code for some days. Here is my problem: what does instrinsic / intrinsic function really means? Are these "the function belong to llvm and just belong to llvm"? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Have you looked at these? https://llvm.org/docs/LangRef.html https://llvm.org/docs/ExtendingLLVM.html On Tue, Mar 26, 2019 at 9:06 AM div code via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Of course, in this sense they are not platform-dependent. I just want to > write a semantics-correct version of such intrinsics and let my static > analyzer goes smoothly. > > On

Hard to follow data analysis without data. Try making your example reproducible [1][2][3] and post in plain text (a setting in your emailer). Read the Posting Guide mentioned in the footer to avoid other posting pitfalls. [1] http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example [2] http://adv-r.had.co.nz/Reproducibility.html [3]

Hi, I want to implement a new intrinsic in llvm that will denote a parallel section within a function. I followed the documentation for extending llvm (http://llvm.org/docs/ExtendingLLVM.html) but there is something about the working mechanism that is not clear for me. 1. Why do we have to add support for the C backend? Is this only necessary to transform the llvm assembly (bytecode) into C code

Hi, Im running Fedora 10. I use the command : ovirt-viewer ovirt-appliance and ovirt-viewer opens up, which is a gray-yellow screen. there is a text box and a connect button. i enter the localhost.localdomain, 127.0.0.1 or static ip address and then it says that couldnt connect to the server and crashes. Would you please please help me. looking forward to your kind reply. zara --------------

On Tue May 10 2005, Chris Lattner wrote: >On Tue, 10 May 2005, Morten Ofstad wrote: >> Actually, I think it would be better to define the registers as a machine >> value type for packed float x4, and providing some 'extract' and 'inject' >> instructions to access individual components... There should also be a >> 'shuffle' instruction

My target has an instruction that adds up all elements in the vector and stores the result in a register. I'm trying to implement it in my compiler but I'm not sure even where to start. I did look at other targets, but they don't seem to have anything like it ( I could be wrong. My experience with LLVM is limited, so if I missed it, I'd appreciate if someone could point it out ).

hello, i want to use igraph for drawing graph of my data. First time i try do it and it was successful. but now i want to test again i got this error: "edges must be numeric or character". this is my edge list(this is output from R): From To 1 US20100331312 2 US20100331341 3 US20100330919 US20100041339 4 US20100330919 US20100195590 5 US20100330919