similar to: [LLVMdev] LLVM related question

On Sat, May 9, 2009 at 5:35 AM, Rotem Varon <varonrotem at gmail.com> wrote: > I need to add a new optimization to the LLVM compiler. Knowing what the optimization does would be very helpful here. > The optimization ALREADY written for x86 IR (i mean that the code that > handles the optimization is designated to work on assembly 86) . It's designed to work on x86 assembly, or

I will start with that i am vary grateful for your time.And continue with, i am sorry if my Qs aren't quite accurate( i just started with the LLVM compiler). On Sat, May 9, 2009 at 5:23 PM, Eli Friedman <eli.friedman at gmail.com> wrote: > On Sat, May 9, 2009 at 5:35 AM, Rotem Varon <varonrotem at gmail.com> wrote: > > I need to add a new optimization to the LLVM

Thank you you answer. On Sun, May 10, 2009 at 12:48 AM, Eli Friedman <eli.friedman at gmail.com>wrote: > On Sat, May 9, 2009 at 8:37 AM, Rotem Varon <varonrotem at gmail.com> wrote: > > Its not x86 IR nor x86 assembly. I have x86 IR "like" instructions ( add > > R1, R2, R3 and so...) > >> > >> If it's really > >> x86

On Sat, May 9, 2009 at 8:37 AM, Rotem Varon <varonrotem at gmail.com> wrote: > Its not x86 IR nor  x86 assembly. I have x86 IR "like" instructions ( add > R1, R2, R3    and so...) >> >>  If it's really >> x86 assembly, you can use LLVM's code generator to get x86 assembly, > > Do you mean the "llvm-gcc -S file.c" , or can i have the

Thank you. Is it possible to determine the liveout of the operands (see example bellow) ? %5 = add i32 %4, %3 For '%5': i can simply use " i->isUsedOutsideOfBlock() " For '%3' and '%4' : this is the question ... >From your answer, is it possible to determine *which* value is liveout ( in binary instruction)? On Sat, May 30, 2009 at 2:57 AM,

Hi, I am running a basic block pass (and iterating through each instruction). Is it possible to convert the basic block instruction form llvm IR to x86 IRWITHIN the path ? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20090510/9c636a9a/attachment.html>

Hi, I am new in the "Linux business" and i need to add an optimization to the LLVM compiler. I would like to know what is the bast way to debug (IDE) the LLVM compiler ? To be more precise, what is the equivalent to Microsoft visual studio on Linux platform? is it eclipse? I want features like: syntax highlight, go to def, etc. Thanks. -------------- next part -------------- An HTML

I believe Dan has added a pass to compute livein / liveout values. Evan Sent from my iPhone On May 30, 2009, at 5:03 AM, Rotem Varon <varonrotem at gmail.com> wrote: > Thank you. > > Is it possible to determine the liveout of the operands (see example > bellow) ? > > %5 = add i32 %4, %3 > > For '%5': i can simply use "

Hi, How can i know, if a value have uses outside of the current basic block (liveout), without iterating through all the basic block ? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20090530/71681bc2/attachment.html>

The pass you're referring to is in include/llvm/Analysis/LiveValues.h and lib/Analysis/LiveValues.cpp. It computes conservative approximations for specific liveness queries, rather than full livein/liveout information. It's intended to be used as a heuristic. Dan On May 30, 2009, at 3:51 PM, Evan Cheng wrote: > I believe Dan has added a pass to compute livein / liveout values. >

On Sun, May 10, 2009 at 15:17, Rotem Varon <varonrotem at gmail.com> wrote: > I am running a basic block pass (and iterating through each instruction). > Is it possible to convert the basic block instruction form llvm IR to x86 IR > WITHIN the path ? > It seems to me that phi nodes would mean that you can't convert any unit smaller than a function to native code. ~ Scott

Hi, I believe that my question isn't clear. So, please let me rephrase : I am running a basic block pass (and iterating through each instruction). Is it possible to convert the basic block instruction form llvm IR to x86 IRWITHIN the path ? I mean: is LLVM API exists for this purpose ? Again, thanks. On Sun, May 10, 2009 at 10:30 PM, me22 <me22.ca at gmail.com> wrote: > On Sun,

Hi, Let say i am writing a code inside basic block pass and iterating all the instructions inside, and i encountered in this instruction : %3 = add i32 %1, 2 I want to convert this instruction to something like this: add R1, 2, R3 I know the opocode, but i what i need is, the operands %1 and 2 (in this example). I will be grateful if some one will tell me how to do so . -------------- next

Hi, I am writing a new transformation (Basic block pass). In the "\llvm-2.5\lib\VMCore\AsmWriter.cpp " file there are some of function i want to use. What do i need to add to the transformation code, so i will be able to use those functions? I tried to use a function and got this error : 'AssemblyWriter' was not declared in this scope. Thanks. -------------- next part

Hi, I am trying to set loop unrolling as a required pass. AU.addRequired<LoopUnroll>(); should I include any header file? How can I be possessive that "LoopUnroll" is the name I need ? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20090606/aaab7bd1/attachment.html>

Rotem Varon wrote: > Hi, > > Let say i am writing a code inside basic block pass and iterating all > the instructions inside, > and i encountered in this instruction : If you're asking how to get the operands of an Instruction, use the getOperand() method: Value * Operand1 = I->getOperand(0); Value * Operand2 = I->getOperand(1); The LLVM doxygen documentation

Hi, I need the Instructions live out, so i will be able to run my pass. One option that i already discussed is to compute it myself. Second option, use the LiveValues Pass(include/llvm/Analysis/LiveValues). This questions are on the LiveValues pass: Do i need to set the "LiveValues" pass in the PassManager as a prerequisite? if so how do i get the results ?How do i get/use the results

Hi, Thank you for your answer. But let me get it straight, when i compile code with the llvm compiler, and my basic block pass is being processed, other passes are concurrently being processed ? Thanks. On Sat, May 23, 2009 at 7:01 PM, John Criswell <criswell at cs.uiuc.edu> wrote: > Rotem Varon wrote: > > Hi, > > > > Is there an API for getting (within a basic block

On Jun 2, 2009, at 5:54 AM, Rotem Varon wrote: > > This questions are on the LiveValues pass: > Do i need to set the "LiveValues" pass in the PassManager as a > prerequisite? if so how do i get the results ? Yes; it's a standard analysis pass. See http://llvm.org/docs/WritingAnLLVMPass.html for information about interactions between passes. > How do i get/use the

Hi, Is there an API for getting (within a basic block pass) the number of basic block in the program ? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20090523/944abb17/attachment.html>