similar to: [LLVMdev] question on instruction selection

On Jan 25, 2010, at 2:18 PM, Nuno Lopes wrote: > Hi, > > I was wondering how exactly instruction selection works in LLVM. As I'm not > aware of any document describing it, I'll ask here :) > > So, the tablegen files that each backend implements describe the mapping > between selection DAG nodes and assembly instructions (and optionally? their > binary

Many thanks for your reply, Dan! >> The "how to write a backend" documents are relevant. As are existing >> targets. The comments on the opcodes in >> include/CodeGen/SelectionDAGNodes.h are fairly descriptive as well. Ah, I see. There's actually much more documentation than I though :) Thanks for the pointers. >> I'm also wondering what would be the

Hi, Mark et al.: Thanks, Mark. Three comments: 1. Rvmmin was one of the methods I tried after Ravi directed me to optimx. It returned NAs for essentially everything. See my email of this subject stamped 4:43 PM Central time = 21:43 UTC. 2. It would be interesting to know if the current algorithm behind optim and optimx with

Hi, I would like to add this publication to the list of publications: https://dl.acm.org/citation.cfm?doid=3135932.3135947 Best Piotr Padlewski -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20171027/1eb5a7dc/attachment.html>

On Sun, Mar 12, 2017 at 2:55 PM, Oliver Braunsdorf via llvm-dev < llvm-dev at lists.llvm.org> wrote: > > Perhaps by "value" you mean points-to set? > > Thats right! I meant the points-to set. Sorry I didn't mention that. > I want to track back the value of the parameter to its definition -- an > "assignment" which could be indirect through a pointer

Hey Scott, There has been quite a lot of research on capture tracking (aka escape analysis) for Java and other dynamic languages. See e.g.: https://wiki.openjdk.java.net/display/HotSpot/EscapeAnalysis http://docs.oracle.com/javase/7/docs/technotes/guides/vm/performance-enhancements-7.html http://dl.acm.org/citation.cfm?doid=320384.320386 Nuno -----Original Message----- From: Scott Egerton via

Hi Phillip, I've been looking into the Capture Tracking Improvements and I was wondering if there was any research/documentation that you know of that I could use as background reading? Many thanks, Scott

Hi, I have a 60k*600k matrix, which exceed the vector length limit of 2^32-1. But it's rather sparse, only 0.02% has value. So I save is as MarketMatrix (mm) file, it's about 300M in size. I use readMM in Matrix package to read it in. If do so, the data type becomes dgTMatrix in 'Matrix' package instead of the common matrix type. The problem is, if I run k-means only on part of

On Tue, Jun 7, 2016 at 4:02 PM, Philip Reames via llvm-dev < llvm-dev at lists.llvm.org> wrote: > (+CC LLVM dev - I'd dropped it in my original reply unintentionally and > just noticed.) > > On 06/07/2016 01:35 PM, Philip Reames wrote: > >> (This was written in a rush. There may be mistakes; if so I'll try to >> correct later.) >> >> At the

>>>>> Spencer Graves <spencer.graves at prodsyse.com> >>>>> on Sat, 8 Oct 2016 18:03:43 -0500 writes: [.............] > 2. It would be interesting to know if the > current algorithm behind optim and optimx with > method='L-BFGS-B' incorporates Morales and Nocedal (2011) > 'Remark on ?Algorithm 778:

FAIL: /usr/home/llvm/obj/../test/Regression/CodeGen/X86/io.llx: Assertion failed: (ResNo < Values.size() && "Illegal result number!"), function getValueType, file /usr/home/llvm/obj/../include/llvm/CodeGen/SelectionDAGNodes.h, line 507. Abort trap (core dumped) FAIL: /usr/home/llvm/obj/../test/Regression/CodeGen/X86/ioport.llx: Assertion failed: (ResNo < Values.size()

With the patchpoint infrastructure, shouldn't it now be relatively straightforward to do an accurate-but-non-relocatable scan of the stack, by attaching all the GC roots as stackmap arguments to patchpoints? This is something we're currently working on for Pyston (ie we don't have it working yet), but I think we might get it "for free" once we finish the work on frame

I've been getting this error for the last few days: gmake[3]: Entering directory `/disk1.1/tigris-slash/usr/home/ben/svn-work/llvm/lib/Transforms/Utils' llvm[3]: Compiling AddrModeMatcher.cpp for Debug build In file included from /disk1.1/tigris-slash/usr/home/ben/svn-work/llvm/include/llvm/Target/TargetLowering.h:26, from

Hello, Nathan > or if it should be a configure test, which might be safer. Are there > any x86 platforms (other than apple) that don't need PLT-indirect calls? Yes, mingw. However just tweaking the define is not enough - we're not loading address of GOT into ebx before the call (on 32 bit ABIs) thus the call will be to nowhere. -- With best regards, Anton Korobeynikov Faculty of

Hi, Nikolaos Kavvadias wrote: > Quoting Richard Pennington <rich at pennware.com>: > > I've just started looking into code generation and have a newbie > > question: Is there enough information in the .td files to make a > > tool to automatically generate an assembler from them? Is a project > > like that in the works? > > your question is reasonable,

> On 30 Sep 2020, at 21:42, Jason Keltz via samba <samba at lists.samba.org> wrote: > > > On 9/30/2020 3:01 PM, Remy Zandwijk via samba wrote: >>>>> On the client, add: >>>>> >>>>> gensec_gssapi:requested_life_time = <int> # seconds >>>>> >>>>> to smb4.conf. E.g. a ticket life time of one hour:

Greetings all: OK, this is bugging the @#@%* out of me. I know the answer is simple and straightforward but for the life of me I cannot find it in the documentation, in the archives, or in my notes (because I know I've encountered this in the past). My problem is: I have a data frame with columns A, B, C, D, and E. A, B, and E are factors and C and D are numeric. I need a new data frame with

OK, this is the revised paravirt.h (Andi has seen this before), then the second is the binary patching stuff. More things get added to the paravirt struct in future patches, but this basic stuff hasn't changed for some time. ==== This patch does the dumbest possible replacement of paravirtualized instructions: calls through a "paravirt_ops" structure. Currently these are function

Dear R users, I would like to change the class of a group of objects in R memory from "numeric" to "dist". I can manipulate the class using class(foo) <- bar but I cannot get the same command to work on groups of variables. When I use for() loops and lists of names, inevitably I have to specify class(get("foo")) <- bar which causes class() to return an

On Thu, Apr 3, 2014 at 11:50 AM, Jevin Sweval <jevinsweval at gmail.com> wrote: > On Wed, Apr 2, 2014 at 1:57 AM, "C. Bergström" <cbergstrom at pathscale.com> wrote: >> Hi - >> >> Not sure if anyone else saw this or cares about a decompiler (not personally >> tested) >> https://github.com/draperlaboratory/fracture >> >> I wonder if