similar to: [LLVMdev] Question to Chris

Ok, here are a few suggestions and comments: 1) LLVM has the capabilities to do everything that you are trying to re-implement. 2) Have you looked at the C backend? It recreates loops. It may not create "for" loops but you can hack on it to do that. 3) The way you are converting out of SSA is wrong. You will suffer from lost copies. You should look at using demotePHI(). see

Dear Prof.Adve and Bill, I deeply appreciate your comments and concerns. (Please forgive my late response. I've tried some more cases to make this issue) As Prof.Adve mentioned, I need to explain exactly what my problem is, but I have no good ability that I can explain it in this plain text space. For this reason, I made a .pdf file and linked it as follows:

Seung, On 8/25/07, Chris Lattner <sabre at nondot.org> wrote: > Ok. Note that LLVM can represent irreducible loops. You can handle > this through code duplication. > -Chris If you are willing to invest more effort into a more complicated analysis, in many cases you can even avoid code duplication. See this paper for details: @inproceedings{erosa94taming, author = {Ana M.

Do you mean that "normal" SSA phi elimination algorithm is DemotePHI()? Thx, Seung ---- Original message ---- >Date: Mon, 24 Mar 2008 21:43:06 -0700 >From: Chris Lattner <sabre at nondot.org> >Subject: Re: [LLVMdev] What is "strong phi elimination" >To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu> >Cc: Christopher Lamb

2008/4/10, David Erosa <david.erosa at gmail.com>: > Public bug reported: > > Binary package hint: nut > > After updating to last nut package (2.2.1-2.1ubuntu6), the megatec_usb > driver seems to be working, except for the charge percentage: > > $ /lib/nut/megatec_usb -DDDDD -a SAI > ... > Checking device (0665/5161) (001/007) > - VendorID: 0665 >

I'm using an SVM as I've seen a paper that reported extremely good results. I'm not having such luck. I'm also interested in ideas for other approaches to the problem that can also be applied to general problems (no assuming that we're looking for spirals). Here is my code: library(mlbench) library(e1071) raw <- mlbench.spirals(194, 2) spiral <-

Hello, Wojtek. I owe much to you. Thank you. My HL code should be simple without any 'goto','break' and so on. Simple as just loops with 'for' and 'if's inside it, so your comment looks helpful. I'll try. Just one thing which concerning me is demotePHI() I couldn't find it in 1.9 so seems to me another installation of the newest version of LLVM. Anyway,

On Nov 5, 2007, at 2:55 AM, Pekka Jääskeläinen wrote: > Hello LLVM people, > > Our customizable TTA target [1] is capable of having plenty of > registers > and register file ports to improve instruction level parallelism and > reduce spills. It's totally up to the designer of the particular TTA > processor how much the processor has registers and register file >

Full_Name: Nick Efthymiou Version: R1.5.0 and above OS: Red Hat Linux Submission from: (NULL) (162.93.14.73) With the introduction of the functions rowSums(), colSums(), rowMeans() and colMeans() in R1.5.0, function "SEXP do_colsum(SEXP call, SEXP op, SEXP args, SEXP rho)" was added to perform the fast summations. We have an excellent opportunity to improve the accuracy by

Gordon Henriksen wrote: > Can you be more specific the algorithm for which you need type > metadata in a write barrier? No algorithms I am aware of perform any > tracing from a write barrier. > This one does: http://citeseer.ist.psu.edu/cache/papers/cs2/442/http:zSzzSzwww.cs.technion.ac.ilzSz~erezzSzPaperszSzms-sliding-views.pdf/an-on-the-fly.pdf > Write barriers are

Hi, > Is there a document describing the guts of SCEV anywhere? If you're looking for theoretical background of SCEV (chains of recurrences algebra), you may take a look at this article: http://citeseer.ist.psu.edu/vanengelen00symbolic.html I'm not aware of any LLVM-specific document describing SCEV. > I have a simple question. When looking at a linear SCEVAddRecExpr > with a

On 8/29/07, Domagoj Babic <babic.domagoj at gmail.com> wrote: > Seung, > > On 8/25/07, Chris Lattner <sabre at nondot.org> wrote: > > Ok. Note that LLVM can represent irreducible loops. You can handle > > this through code duplication. > > -Chris > > > If you are willing to invest more effort into a more complicated analysis, > in many cases you

Hello, Normally, in addition to such qdisc scheduler mechanisms as FIFO, PQ, WRR, WFQ, are there any more? Then, there is a confusion on scheduler in Linux enviroment: Assume there is a qdisc, such as RED as a leaf qdisc in a router, we know, if there is packet which want to enqueue the packet, the Function red_enqueue is called, but when the packet leave the queue(when the Function red_dequeue

>> It has a section on "structural analysis" that you will find useful. >> >> Why do you want "for statements"? >> > > Thank you for this info, Chris. > I'm doing this 'cause I'm making a backend for a virtual machine > assembly has an instruction which is very similar to 'for' statement. > I know this seems quite

---- Original message ---- >Date: Fri, 24 Aug 2007 22:23:39 -0700 >From: Chris Lattner <sabre at nondot.org> >Subject: Re: [LLVMdev] constructing 'for' statement from LLVM bitcode >To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu> > > >On Aug 24, 2007, at 10:07 PM, Seung Jae Lee wrote: > >> Do you have any idea on how I can construct

Dear All, Does anyone use S or R for statistical natural language processing (NLP)? All I have found so far is a package called EMU (http://www.shlrc.mq.edu.au/emu/emu-splus.shtml) which is a speech wave-form processing package. What I'm looking for are routines to support text processing, text categorization, word sense disambiguation, text understanding etc. In particular, I would

I'm using LLVM to instrument C code to test the efectiveness of some methods of error detection with dynamic invariants (see http:// citeseer.ist.psu.edu/hangal02tracking.html). I'm using also a range invariant (max an min values seen). The problem is that for those invariants, I need to know if the value is signed or not (0xFF can be -1 or 255, depending on signed/unsigned).

Ralf, Ok, thanks, I'll have a look. The paper I was referencing was http://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.94.668 from '90 I believe. There is also an Intel paper the expands on this for the Itanium. On Fri, Jan 6, 2012 at 12:34 PM, Ralf Karrenberg < karrenberg at cdl.uni-saarland.de> wrote: > Hi, > > I am not sure if I know the paper you mentioned, but

On 2007-09-15, at 23:55, Talin wrote: > Gordon Henriksen wrote: > >> Can you be more specific the algorithm for which you need type >> metadata in a write barrier? No algorithms I am aware of perform >> any tracing from a write barrier. > > This one does: > > http://citeseer.ist.psu.edu/cache/papers/cs2/442/ >

>> As part of the advanced compilers course semester project (at >> UIUC), we >> are starting to implement array dependence analysis for LLVM. Great! This is something we've needed for a long time. > I'm currently working on a similar project and hoping to finish it in > about two weeks. Cool! I think the most critical part of this is to get a good