similar to: [LLVMdev] llvm to x86 IR conversion

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,

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

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, 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>

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 "

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

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. >

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

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

Hi, I am a student (software engineering), and i am using the LLVM in my project (I am sorry of the lack of details, but i want to take the minimum of your time, if you want more details don't hesitate...). I need to add a new optimization to the LLVM compiler. The optimization ALREADY written for x86 IR (i mean that the code that handles the optimization is designated to work on assembly 86)

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

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

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

On May 29, 2009, at 11:37 PM, Rotem Varon wrote: > How can i know, if a value have uses outside of the current basic > block (liveout), without iterating through all the basic block ? If the value is created within the basic block in question, and the block doesn't loop to itself, then you can just iterate through the uses and note if the use is an instruction in a different

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

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>