similar to: [LLVMdev] how to declare that two registers must be different

On Sun, 17 Sep 2006, [UTF-8] Rafael Esp?ndola wrote: > The ARM has a multiply instruction of the form Rd=Rm*Rs where Rd != Rm. > How can I add this requirement to the instruction definition? Unfortunately there is currently no great way to do this. Some options are: 1. Pin one operand to a specific register, one that isn't allocated (e.g. R12). Use copyto/fromreg to get to it.

Hi Chris, > On Sun, 17 Sep 2006, [UTF-8] Rafael Esp?ndola wrote: > > The ARM has a multiply instruction of the form Rd=Rm*Rs where Rd != > > Rm. How can I add this requirement to the instruction definition? > > ... > > I'd like to make the regalloc interfaces more powerful to be able to > capture this sort of thing, but I'm not very familiar with ARM.

> "The destination register shall not be the same as the operand > register Rm. R15 shall not be used as an operand or as the > destination register." The ARM ARM has this "Operand restriction" on MUL: Specifying the same register for <Rd> and <Rm> has UNPEDICTABLE results. > Then, for the load and store multiple instructions, LDM and STM,

On Mon, 18 Sep 2006, [UTF-8] Rafael Esp?ndola wrote: >> "The destination register shall not be the same as the operand >> register Rm. R15 shall not be used as an operand or as the >> destination register." > > The ARM ARM has this "Operand restriction" on MUL: > Specifying the same register for <Rd> and <Rm> has UNPEDICTABLE

This is a note to announce the availability of "Ogg Theorarm", an optimised ARM implementation of decoding libraries for the Theora video code, and Vorbis audio codec from xiph.org. Full details of this code release can be found at <http://www.wss.co.uk/pinknoise/theorarm>, but highlights include: * Full speed playback of a 320x240x25fps clip with a 48kHz stereo audio track on

Rafael Espíndola wrote: >> "The destination register shall not be the same as the operand >> register Rm. R15 shall not be used as an operand or as the >> destination register." > > The ARM ARM has this "Operand restriction" on MUL: > Specifying the same register for <Rd> and <Rm> has UNPEDICTABLE results. > >>

> My copy of the ARM ARM says: > > "Use of R15: Specifying R15 for register <Rd>, <Rm>, or <Rs> has > UNPREDICTABLE results." > > This is the same as above. However, it goes on to say: > > "Operand restriction: Specifying the same register for <Rd> and <Rm> was > previously described as producing UNPREDICTABLE results. There

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 CentOS5 with the latest updates applied, the logwatch filter for postfix returns way too many lines from the log. I get an "unmatched entries" message and all messages that have gone through the system is listed. Here is an example: 8F930A8092: to=<morten at foo.bar>, orig_to=<morten at localhost>, relay=local, delay=0.19, delays=0.06/0.01/0/0.12, dsn=2.0.0,

I'm writing a compiler using LLVM, and suddenly today I started to get this error, when emitting to a .s file. Assertion failed: (I != M+Size && I->FromReg == RegNum && "Invalid RegNum"), function getLLVMRegNum, file MCRegisterInfo.cpp, line 78. I'm emitting using x86_64-apple-darwin. Any thoughts about what could be causing this? LLVM validation does not

Hi! Does anyone know hot to set number of digits to be printed in function 'paste'? Tine Mla?

I've made a start writing a Theora player for Series 60 phones (mostly Nokia phones, but some Samsung and Sony Ericsson ones too). Download here: http://symbianoggplay.sourceforge.net/OgvPlay/OgvPlay_010.zip I've been using Big Buck Bunny, Elephants Dream and a few other ogv files for testing. I've uploaded 320x180 versions of those here:

Hi, This patch improves compression a very tiny bit on average, but up to 0.1 percentage point for classical music. I haven't found any tracks that show worsening compression with this patch. -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-Improve-LPC-order-guess.patch Type: text/x-patch Size: 0 bytes Desc: not available Url :

Hello everybody, hi Evan, this patch changes the lowering of arguments for tail call optimized calls. Before arguments that could be overwritten by each other were explicitly lowered to a stack slot, not giving the register allocator a chance to optimize. Now a sequence of copyto/copyfrom virtual registers ensures that arguments are loaded in (virtual) registers before they are lowered to the

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

I have two packages, one that does the actual work (SC) and the other a Tcl/Tk UI (SCUI) that invokes methods within the former. Within the SCUI's invocation method, I save an object returned from SC, the results of a long-running method. Now the object is completely described by the SC package. Unfortunately, any attempt to load the object (in a fresh R session) fails as below. R>

Hello * I would like to reshape wide the following dataset: > rl <- read.dta("intermedi/rapporti_lavoro.dta") [c("id_rl","prog","sil_pi","sil_cf","sil_dat_avv")] > dim(rl) [1] 12964 5 > object.size(rl) 1194728 bytes > head(rl) id_rl prog sil_pi sil_cf sil_dat_avv 1 638 1 04567XXXXXX

Hi I want to port speex to my pocket PC iPAQ1945 which has a Samsung processor 2410, an ARM9-based processor. I would like to write the specific optimized code for this chip. I had some experience at DSP chip and fixed-point coding but know nothing about embedded system and ARM. Could someone tell me some hint how to write optimized code for this pocket PC. If you can give me some links that will

I'm using functions to return a matrix of all permutations of a specified size from a larger list for predictor selection. For each predictor size I use a seperate function like this: bag2 <- function(n) { rl <- c() for (i1 in seq(n)) { for (i2 in seq(n)) { if (length(unique(c(i1,i2)))==1) {next} rl <- cbind(rl,matrix(c(i1,i2))) } }

Hi all, I searched through the archives, but couldn't find a fix... Basically, I've got a bunch of numeric vectors and one character vector that I want to bind into a data frame. When I include the character vector as a column in the data frame, all the numeric columns get factored in the data frame, which makes it tough to call those columns for calculations later on. I've tried