similar to: [LLVMdev] Instruction selector option in clang

Is there a generic function that gives the machine instructions and their patterns given in the .td files of a backend specification ? or a subset which match a certain opcode ? otherwise how are the machine instructions being accessed/matched for instruction selection ? -Omer -------------- next part -------------- An HTML attachment was scrubbed... URL:

On 15/08/11 13:12, محمد ﻋﻤﺮ ﺩﻫﻠﻮﻯ wrote: > How do I enable the assertions when building ? > I am using 2.9, the current version, and when I use the standard build llc does > not give me the view-*-dags options. Configure with --enable-assertions Ciao, Duncan. > > -Omer > > On Sat, Aug 13, 2011 at 1:50 AM, Duncan Sands <baldrick at free.fr > <mailto:baldrick at

After enabling assertions and recompilation I still get this error. ~/bin/llvm$ llc -view-isel-dags t3.bc llc: Unknown command line argument '-view-isel-dags'. Try: 'llc -help' llc: Did you mean '-fast-isel-abort'? and I see the view-edge bundles option but get the following error. ~/bin/llvm$ llc -view-edge-bundles t3.bc Writing

On 13/08/11 00:01, Cameron Zwarich wrote: > They do work if you have GraphViz binaries in your path when you configure LLVM. I think you also need to build with assertions enabled. Ciao, Duncan. > > Cameron > > On Aug 12, 2011, at 2:59 PM, محمد ﻋﻤﺮ ﺩﻫﻠﻮﻯ wrote: > >> I need help with visualizing graphs before and after instruction selection. >> The llc options

How do I enable the assertions when building ? I am using 2.9, the current version, and when I use the standard build llc does not give me the view-*-dags options. -Omer On Sat, Aug 13, 2011 at 1:50 AM, Duncan Sands <baldrick at free.fr> wrote: > On 13/08/11 00:01, Cameron Zwarich wrote: > > They do work if you have GraphViz binaries in your path when you > configure LLVM.

I have a few questions about matching in the selector. 1. Why does the size of the MatcherTable greatly exceed the number of patterns defined in the target description? If it simply contains all the variants of the patterns then what is the encoding of these entries ? 2. Is there a simple way to extract the root opcode of a pattern from the MatcherTable entry ? 3. I believe the entries in the

I need help with visualizing graphs before and after instruction selection. The llc options listed in the docs do not work as specified. -Omer 2011/8/8 Rafael Ávila de Espíndola <rafael.espindola at gmail.com> > On 08/06/2011 02:40 AM, Sanjoy Das wrote: > > Hi! > > > > I have a DAG (attached), which, according to me, should result in the > > code for

They do work if you have GraphViz binaries in your path when you configure LLVM. Cameron On Aug 12, 2011, at 2:59 PM, محمد ﻋﻤﺮ ﺩﻫﻠﻮﻯ wrote: > I need help with visualizing graphs before and after instruction selection. > The llc options listed in the docs do not work as specified. > > -Omer > > 2011/8/8 Rafael Ávila de Espíndola <rafael.espindola at gmail.com> > On

Hi Omer, On Feb 24, 2012, at 8:46 AM, محمد ﻋﻤﺮ ﺩﻫﻠﻮﻯ <omerbeg at gmail.com> wrote: > Is there a generic function that gives the machine instructions and their patterns given in the .td files of a backend specification ? > or a subset which match a certain opcode ? I'm not aware of any dump utility functions to display that information concisely. I agree such a thing would be

what do you mean by "more optimal instructions" ? -omer On Wed, Nov 16, 2011 at 1:28 AM, Joe Abbey <jabbey at arxan.com> wrote: > I've done a first pass over the past 6 months of changes and some notable > things stood out: > > * The ARM backend has reworked Set Jump Long Jump EH Lowering. > * The ARM backend includes improved support for Cortex-M > *

(readding cc llvmdev) On Feb 24, 2012, at 11:46 AM, محمد ﻋﻤﺮ ﺩﻫﻠﻮﻯ <omerbeg at gmail.com> wrote: > > > otherwise how are the machine instructions being accessed/matched for instruction selection ? > > > > Have a look at the code in SelectionDAGISel. > > > I am looking at the ARM backend. > In specific, the instruction selection. > In Select(N),

I've done a first pass over the past 6 months of changes and some notable things stood out: * The ARM backend has reworked Set Jump Long Jump EH Lowering. * The ARM backend includes improved support for Cortex-M * The ARM backend adds parsing and encoding ARM/Thumb/Thumb2 assembly There are also many many code generation improvements which select more optimal instructions. Those seemed

Hi Jean-Marc, thanks for the response. First, I will clarify again that floating-point solves this - so isn't that a bug in fixed-point? Also, I understand that algorithmically the AEC won't cancel echo properly on a non-linear signal, but why completely distort the output? If the echo just won't get cancelled it would be acceptable, but in the current state it disables the ability to

Hi Hal, Thanks for the reference. I’ve looked at PPCBranchSelector and the PowerPC backend. It is very different from the X86 architecture and unfortunately the way branch relaxation and alignment related issues are handled in PPC cannot be copied to X86. This is because: 1. PPC instructions are of fixed length while X86 instructions are of variable length, and their length can change

Hi Hal, A pre-emit pass will indeed be preferable. I originally thought of it, too, however I could not figure out how can such a pass have an access to information on instruction sizes and block alignments. I know that for X86, at least, the branch relaxation is happening during the layout phase in the Assembler, where I plan to integrate the nop insertion such that the new MCPerfNopFragment

Hi, I couldn't find a discussion that specifically addresses this, so here it is. I'm using Speex AEC in my mobile VoIP application to cancel speaker echo. The used version is 1.2rc1 from the website, and I'm compiling with fixed-point. On most occasions, the AEC works very well and cancels most of the echo (combined with the preprocessor). On some devices, where the microphone signal

Hi, I am new to tc, please forgive me for simple question. I have linux 2.4 in my routers, I would like to use HTB. I have downloaded binary code from http://luxik.cdi.cz/~devik/qos/htb/#source, (tc.gz), but I could not open the file. Is there any other place I can get binary code for HTB. Also if you can give some direction how to patch it, it will be really helpful. Thanks in advance Omer

I've searched the Samba docs, man pages, Using Samba, and a few other places. I've been unable to find a way to retrieve the browse list (as in Network Neighborhood or net view on Win32) from Samba. I'm using a RH 6.2 box running Samba 2.0.7 in a multi-subnet workgroup (which is really a domain, but I don't have a machine trust account and I'm using security = server). Samba is

Hey. I have a very annoying problem, and was wondering what is wrong. Suppose I have backgroundrb running, and then I have an action in some controller. In the action I define a worker. When leaving the action, suddenly the connection to backgroundrb is lost: DRb URI: druby://localhost:22222 Pid: 3976 Autostart... done druby://localhost:42531 - #<Errno::EBADF: Bad file descriptor -

Hello, a probably rather stupid question to which I can't find an answer: I have a bar chart, and I want to present which bars are significantly different by placing a line with an asterisk above then (similarly to fig. 3 in: http://jnm.snmjournals.org/content/46/4/574.figures-only). Does anyone have a reference where can I find some instructions how to learn this? Thanks a lot! Omer --