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2011 Nov 21
4
[LLVMdev] How to make Polly ignore some non-affine memory accesses
2011/11/21 Tobias Grosser <tobias at grosser.es>: > On 11/20/2011 04:36 PM, Marcello Maggioni wrote: >> >> Sorry for the noobish question, but what kind of subscripts generate a >> SCEVCouldNotCompute  from the SCEV engine? >> I tried for a while but I wasn't able to trigger that > > Hi Marcello, > > the SCEV returns SCEVCouldNotCompute in ca...
2004 Apr 13
2
R apache and PHP
I've developed a web application in PHP and R my script is <?php ... exec("R CMD BATCH --silent /home/marcello/R_in/myfile.bat /home/marcello/R_out/myfile.out"); ... ?> This script execute in R batch mode and write the myfile.out. On Win2000 the similar script is ok, but on linux I've a problem. I suppose is a permession problem because the same script on shell run fine and on Zend debugg...
2015 Aug 27
2
preserve registers across function call
Hi Marcello, Thanks for your reply. I will try to pass down the mask! I have one more question. In my backend I return CSR_RegMask in getCallPreservedMask and return CSR_SaveList in getCalleeSavedRegs. Is that a correct setup? I dumped the regmask and found that callee saved regs are marked 1 and non-callee s...
2014 Jun 20
2
Alleged bug in Silk codec
...ned): if left as is the code should at least use an unsigned accumulator and replace the test (nrg < 0) with (nrg > MAX_INT32). Can you see any issue in doing so? If you also think it might be a good idea to do the same in the libopus repository, I can send you the suggested patch. Cheers, Marcello On 18/06/2014 08:09, "Jean-Marc Valin" <jmvalin at jmvalin.ca> wrote: >Hi Marcello, > >It turns out that the problem has a much simpler explanation. As far as >I can tell, it's actually a bug in silk_sum_sqr_shift() and this trivial >patch appears to fix the pr...
2014 Jun 13
3
Alleged bug in Silk codec
...ror, but I am not too sure why the new versions work better. I favour the version with the new C0 calculation, as it avoids rescaling the input. I also played around with a version (not attached) that prescales the input by rshifts/2 - this might be considering as it simplifies the code. Regards, Marcello PS: I am using 1.1 but the same issue is present with the latest code well. On 13/06/2014 06:05, "Jean-Marc Valin" <jmvalin at jmvalin.ca> wrote: >Hi Marcello, > >Thanks for the report. It's hard to debug this without the actual file. >Can you please post the swe...
2011 Nov 22
1
[LLVMdev] How to make Polly ignore some non-affine memory accesses
On 11/18/2011 01:36 PM, Marcello Maggioni wrote: > 2011/11/18 Marcello Maggioni<hayarms at gmail.com>: >> The patch is attached. >> >> The patch to correct the test runs on OSX will be posted shortly after >> this one (I preferred to separate the two so that a problem with >> either one of th...
2007 Aug 03
2
Missing Heimdal, Kerberos, Samba and OpenLdap how-to
Hi, i'm looking for this how-to, often referenced but no more available: https://sec.miljovern.no/bin/view/Info/HeimdalKerberosSambaAndOpenLdap Is there anywhere an how-to about integrating Heimdal, Kerberos, Samba and OpenLdap? Thank you in advance Marcello
2014 Jun 24
5
[LLVMdev] Making it possible to clear the LLVMContext
...ng the compiler alive for a many compilation sessions, using the same LLVMContext, but without the problem of accumulating data in the LLVMContext that would slowly fill up the memory. This as much I can enter into details that I can :/ Probably this is also a quite common use case scenario too. Marcello 2014-06-24 18:52 GMT+01:00 Eric Christopher <echristo at gmail.com>: > Right, this is likely going to have at least some of the same problems > that Bill ran into when he tried to update a TargetMachine by > placement newing a new one into it. > > Can you elaborate a bit mor...
2011 Dec 04
0
[LLVMdev] How to make Polly ignore some non-affine memory accesses
On 11/21/2011 12:44 PM, Marcello Maggioni wrote: > 2011/11/21 Tobias Grosser<tobias at grosser.es>: >> On 11/20/2011 04:36 PM, Marcello Maggioni wrote: >>> >>> Sorry for the noobish question, but what kind of subscripts generate a >>> SCEVCouldNotCompute from the SCEV engine? >>>...
2013 Sep 17
4
[LLVMdev] Is it safe to insert instructions in batches into BBs?
...(SomeInstruction); for () { IB.CreateXXX(); } Everything is fine. So , in the end, is it safe to add instructions like in the first method I mentioned or actually the only safe way is to use the second way? In case it should be safe, what could be the cause of the random breakages? Cheers, Marcello PS = Some of the instructions I'm adding are using one the output value of the other.
2011 Oct 03
4
[LLVMdev] How to make Polly ignore some non-affine memory accesses
...s, thanks for the answer. I'll try to give a look to the code you pointed me to , and I'll try to make the modification myself. I'm new to LLVM and Polly, but the code of both seem clean and understandable, so I hope to be able to do it myself. In case I'll ask here for support :) Marcello 2011/10/1 Tobias Grosser <tobias at grosser.es>: > On 10/01/2011 03:26 PM, Marcello Maggioni wrote: >> >> Hello everyone, >> >> I'm trying to use LLVM+Polly to obtain a polyhedral representation of >> some loops to use later for passes I want to implement...
2014 Jun 24
4
[LLVMdev] Making it possible to clear the LLVMContext
...e a single LLVMContext used for multiple compilations. You make a good point about that by the way. If there are outstanding users cleaning the context under their seats might still pose a risk to them, and in that case deleting + newing a new LLVMContextImpl might actually not be very different. Marcello 2014-06-24 17:14 GMT+01:00 David Blaikie <dblaikie at gmail.com>: > What're the situation in which you need to clear it? If there are > outstanding users of it (given that you mention clients possibly > holding references to the pimpl, it sounds like you might have > outstan...
2011 Nov 18
0
[LLVMdev] How to make Polly ignore some non-affine memory accesses
2011/11/18 Marcello Maggioni <hayarms at gmail.com>: > 2011/11/15 Marcello Maggioni <hayarms at gmail.com>: >> 2011/11/14 Tobias Grosser <tobias at grosser.es>: >>> On 11/14/2011 02:45 PM, Marcello Maggioni wrote: >>>> >>>> 2011/11/14 Tobias Grosser<tobias...
2005 Oct 10
2
ntlm_auth SID problem
...utils/ntlm_auth.c:get_require_membership_sid(237) Winbindd lookupname failed to resolve VILLAS+SQUID into a SID! ERR and changing /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic --require-membership-of=S-1-5-21-1390067357-573735546-682003330-1524 USER PASSWORD OK any guess? thanks anyway marcello -- Marcello Mezzanotti <marcello.mezzanotti@gmail.com> Information Security UNIX / Linux / *BSD
2012 Feb 09
1
[LLVMdev] BackedgeTakenCount calculation for fortran loops and DragonEgg gfortran-4.6
FInally I had the time to complete everything up. Now I included the test case in the patch and the testcase runs with the LLVM tests system. 2012/2/9 Marcello Maggioni <hayarms at gmail.com>: > This is instead a very simple (handmade) test case that triggers the > problem (attached) > Also a more conforming patch has been attached > > 2012/2/9 Marcello Maggioni <hayarms at gmail.com>: >> This is the .ll for that graph (at...
2012 Oct 19
11
[LLVMdev] Predication on SIMD architectures and LLVM
...ts predicated instructions (we really mainly only need one type of predicate , so every instruction could use that kind of predicate ...) but I think this is a nasty solution ... Did someone already tried to do this in LLVM and if yes what solution/s did you use to solve the problem? Regards, Marcello -- Marcello Maggioni Codeplay Software Ltd 45 York Place, Edinburgh, EH1 3HP Tel: 0131 466 0503 Fax: 0131 557 6600 Website: http://www.codeplay.com Twitter: https://twitter.com/codeplaysoft This email and any attachments may contain confidential and /or privileged information and is for use by t...
2013 Sep 21
3
[LLVMdev] Inserting a custom switch instruction implementation in backend
...ing able to lower the switch instructions in my own way directly instead of having to let llvm do it its own way and "morph" the result into my own. There is a clean way to custom lower the switch instruction in the backend without substituting the entire SelectionDAGBuilder? Cheers, Marcello
2013 Sep 21
0
[LLVMdev] Inserting a custom switch instruction implementation in backend
Hello Probably the easiest way for you is to lower switch instructions via IR-to-IR pass in the way you want. On Sat, Sep 21, 2013 at 3:43 PM, Marcello Maggioni <marcello at codeplay.com> wrote: > Hi, > > in implementing a backend for a target we work on, I ended up needing to > lower the switch instruction in a very specific way that is quite different > from the standard llvm way with the decision trees. > > The custom...
2013 Sep 18
0
[LLVMdev] Is it safe to insert instructions in batches into BBs?
Marcello Maggioni <marcello at codeplay.com> writes: > I'm getting a very strange behaviour while adding already created > instructions in batches into basicblocks instead of creating and > inserting them immediately. > > Because I need to insert instructions in a certain specific...
2014 Jun 20
0
Alleged bug in Silk codec
Hi Marcello, Actually, we were careful to avoid the undefined behaviour here. In fact, we are specifically running a clang test detecting undefined behaviour. If you look at the silk_SMLABB_ovflw() macro, you will see it is based on silk_ADD32_ovflw(), which is defined as: #define silk_ADD32_ovflw(a, b) ((op...