search for: dce

Displaying 20 results from an estimated 737 matches for "dce".

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2015 Dec 29
2
Running DCE after my pass
Hi, I wrote an IR pass and it adds some instructions that are not used. For example: %1 = call i64 @foo() When %1 is not used at all. I thought that running DCE (-dce) or DIE (-die) after my pass will remove such instructions, but it didn't. Why? And is there a way to do that? Thanks, Tehila. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20151229/2f6839...
1999 Nov 29
2
openssh-1.2pre15 on AIX
Hi. Pre15 compiles out-of-the-box on AIX 4.3.2 ...almost. No patch included this time, but the following were the gotchas: - The __P() prototyping doesn't work (as discussed earlier) - bsd-daemon.o wasn't linked into libssh.a (though configure seemed to detect the need for it) DCE patch will follow shortly. Regards, Tor-?ke ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com
2013 May 31
2
[LLVMdev] Dead Code Elimination and undef values
Hello there, I'm writing a transformation pass for LLVM, and I hoped to use dce to clean up the resulting code after my pass. I just have some questions about LLVM's dce implementation. Well, my transformation is a function pass, and, after the changes are made, some instructions are not needed anymore. In order to easily get rid of those instructions, I'm setting all...
2018 Mar 16
3
opt: how to invoke optimizations manually?
Hello, I'd like to measure the impact of optimizations. Trying this (for DCE): * clang -S -emit-llvm test.c * opt -S test.ll > without_dce.ll * opt -S -dce test.ll > with_dce.ll gives without_dce.ll and with_dce.ll having the same content. How can you apply certain optimizations in a specified order? Best, HwJ --- $ cat test.c > int dce(int n) { > if (...
2013 Feb 25
6
any available asynchronous dce rpc library?
Hi Thanks in advanced. I'm writing a proxy server doing NTLMv2 authentication. I think I need a NetLogon client service . Is there any available library providing netlogon function? or at least an dce rpc library? an asynchronous library is the best. :) Thanks again. Derek.
2019 May 24
2
Representations of IR in the output of opt
...ols to investigate the influence of the order of optimization passes on the performance of compiled programs -nothing exceptional here. I noticed something inconvenient with opt, namely that splitting a call does not always give the same output: % llvm-stress > stress.ll % opt -dse -verify -dce stress.ll -o stress-1.bc % opt -dse stress.ll | opt -dce -o stress-2.bc % diff stress-{1,2}.bc Binary files stress-1.bc and stress-2.bc differ The difference seems meaningful; it's ~180 bytes out of ~1400 bytes of output in my random case. I can't decode it however, because disassembling...
2018 Mar 16
0
opt: how to invoke optimizations manually?
Hi, You should add this option to the first command *"-disable-O0-optnone"* so *clang -Xclang -disable-O0-optnone -emit-llvm -S -o without_dce.ll test.c* then *opt -dce -S < without_dce.ll > with_dce.ll* HTH, Son Tuan Vu On Fri, Mar 16, 2018 at 2:15 PM, HwJ via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Hello, > > I'd like to measure the impact of optimizations. > Trying this (for DCE): > > * clan...
2013 Jun 01
0
[LLVMdev] Dead Code Elimination and undef values
Hi Cristianno, On 01/06/13 01:49, Cristianno Martins wrote: > Hello there, > > I'm writing a transformation pass for LLVM, and I hoped to use dce to clean up > the resulting code after my pass. I just have some questions about LLVM's dce > implementation. > > Well, my transformation is a function pass, and, after the changes are made, > some instructions are not needed anymore. In order to easily get rid of those > inst...
2010 Oct 11
3
[LLVMdev] DCE and external function
If I have: %x = call @externalFunc ... ; other codes where %x is not used ret ; assume void function and use dce optimization, will the call gets eliminated? -- View this message in context: http://old.nabble.com/DCE-and-external-function-tp29932485p29932485.html Sent from the LLVM - Dev mailing list archive at Nabble.com.
2007 May 10
1
dfs/dce and openssh
I searched google and did not find any hits on this being solved. I want to get ssh so I can the dsa/rsa style password it in an environment that uses dfs/dce authentication if that is possible (and it has not already been solved). In other words, I want to be able to log into a host as a dfs/dce user without typing my password. Before I dig into the code and trying to do this, I wanted to ask those two questions: 1) Has it already been accompli...
2000 Nov 29
4
RPC exception: "Who are you failed (dce / rpc)"
Hello, with OpenSSH_2.3.0p1 running in HP-UX 11.00 I noticed that the "SD commands" (like "swcopy") produce the following error when being logged in via SSH: ERROR: RPC exception: "Who are you failed (dce / rpc)" 11/29/00 11:20:18 MET Ideas? Regards, Ulrich P.S. Not subscribed to the list
2004 Apr 08
0
Some basic questions about accessing DFS/DCE shares with SAMBA 3.0
...ells it out for us (probably too obvious for SAMBA old-timers, but we're just going back to basics in making sure we're operating under the correct assuptions). 2) If question #1 is correct, is there any special configuration, compilation, or invokations we need to do to make SAMBA use the DCE/DFS credentials? For example, on AIX, when we want to use a DFS/DCE file share, we use this command: dce_login dfsuser abc123 (the principal is 'dfsuser', the password 'abc123') and then the directory /.../remoteoffice.ourcompany.com/fs is available to us to work with. When we...
1999 Nov 29
1
[PATCH] DCE for pre15
As promised, here's the DCE patch for pre15. (and this time i didn't forget the attachment ;) It enables ssh to authenticate, set groups and attach network credentials. It's a clean implementation (i left out the credential-move-hack). This one adds the --with-dce option to configure Some notes have rised: The f...
2006 Jan 19
1
nmbd and port 135 / dce rpc WINS
These are already open. I'm pretty sure that NT4/2003 PDC's make a DCE/RPC over TCP connection to pull down the <1b> entries from the wins server. I have done packet captures on test NT4 wins server to see how PDC's pull their domain lists, and I see the port 135 three way handshake, which then gets switched over to a tcp port 1028 which is the dce/rpc requ...
2016 Jan 30
3
DCE in the presence of control flow.
...29, 2016 at 10:26 PM To: David Callahan <dcallahan at fb.com<mailto:dcallahan at fb.com>>, Hal Finkel <hfinkel at anl.gov<mailto:hfinkel at anl.gov>> Cc: LLVM Dev Mailing list <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> Subject: Re: [llvm-dev] DCE in the presence of control flow. In practice, APT is not faster to build than rdf. The df calculator we use is linear time and quite fast. Updating is also pretty trivial since it's only deletes of dead and unreachable code. So anything it reached can be replaced with undef in most cases. C...
2019 May 27
2
Representations of IR in the output of opt
...ion passes on the performance of compiled programs >> -nothing exceptional here. >> >> I noticed something inconvenient with opt, namely that splitting a call >> does not always give the same output: >> >> % llvm-stress > stress.ll >> % opt -dse -verify -dce stress.ll -o stress-1.bc >> % opt -dse stress.ll | opt -dce -o stress-2.bc >> % diff stress-{1,2}.bc >> Binary files stress-1.bc and stress-2.bc differ >> >> The difference seems meaningful; it's ~180 bytes out of ~1400 bytes of >> output in my random case. I...
2016 Jan 30
0
DCE in the presence of control flow.
In practice, APT is not faster to build than rdf. The df calculator we use is linear time and quite fast. Updating is also pretty trivial since it's only deletes of dead and unreachable code. So anything it reached can be replaced with undef in most cases. Cd-dce is not slower in GCC than dce On Fri, Jan 29, 2016, 8:31 PM David Callahan <dcallahan at fb.com> wrote: > I think you can also avoid the RDF computation using a more directed form > of control dependence testing such as described in > > Keshav Pingali and Gianfranco Bilardi. 199...
2016 Jan 30
0
DCE in the presence of control flow.
...2016 at 7:02 AM To: Daniel Berlin <dberlin at dberlin.org<mailto:dberlin at dberlin.org>>, Hal Finkel <hfinkel at anl.gov<mailto:hfinkel at anl.gov>> Cc: LLVM Dev Mailing list <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> Subject: Re: [llvm-dev] DCE in the presence of control flow. I had assumed you would treat phi nodes differently from other operations in that they don’t need to keep the block alive just to retain the data flow facts but it would be simplest to do that. Thanks Daniel From: Daniel Berlin <dberlin at dberlin.org<mailto...
2010 Oct 11
0
[LLVMdev] DCE and external function
Hi leledumbo, > If I have: > > %x = call @externalFunc > ... ; other codes where %x is not used > ret ; assume void function > > and use dce optimization, will the call gets eliminated? only if the compiler can prove that the called function has no side effects (such as modifying some global variables or causing the program to exit). Ciao, Duncan.
2010 Oct 13
2
[LLVMdev] DCE and external function
Hi, On Mon, Oct 11, 2010 at 3:46 PM, Duncan Sands <baldrick at free.fr> wrote: > Hi leledumbo, > >> If I have: >> >> %x = call @externalFunc >> ... ; other codes where %x is not used >> ret ; assume void function >> >> and use dce optimization, will the call gets eliminated? > > only if the compiler can prove that the called function has > no side effects (such as modifying some global variables or > causing the program to exit). Wasn't there some efforts/investigation to support marking of (body-less) funct...