similar to: [LLVMdev] install-time optimization

Hi Eli, I want to disable optimizations because, i'm going to implement a framework in JAVA for educational purposes. I have planned to do followings: 1) Create LLVM-IR and export it as Assembly (without optimizing the source-code) 2) Transform the LLVM-Assembly to a data-structure, similar to LLVM data structure (Module, Function, BB ...) but implemented in Java 3) Optimizing

Hello together, although i use the "-O0" flag as follow, the llvm perform dead code elimination. How can i disable optimizing completely? KR Raad llvm-gcc -O0 -emit-llvm main.cpp -S -o main.s -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20081127/c4ef8aac/attachment.html>

On Thu, Nov 27, 2008 at 6:14 AM, RAAD B <raad_7007 at yahoo.com> wrote: > Hello together, > > although i use the "-O0" flag as follow, the llvm perform dead code > elimination. > How can i disable optimizing completely? Sorry, it's not possible; the gcc front-end does some optimizations which the LLVM backend can't do anything about, and dead code

On Fri, Nov 28, 2008 at 12:36 AM, RAAD B <raad_7007 at yahoo.com> wrote: > Hi Eli, > > I want to disable optimizations because, i'm going to implement a framework > in JAVA for educational purposes. > > I have planned to do followings: > > 1) Create LLVM-IR and export it as Assembly (without optimizing the > source-code) > 2) Transform the

Ok, but what about a pass like alias-analysis. How are the results stored, so that other passes can use them. -Raad ________________________________ From: Eli Friedman <eli.friedman at gmail.com> To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu> Sent: Tuesday, February 17, 2009 9:52:58 AM Subject: Re: [LLVMdev] information-transfer between analysis-pases On Tue, Feb 17,

Hi Duncan, thanks for the answer. But "opt -load ..../Decorator.so -dec <prog.bc> new_prog.bc" creates an invalid file. When i use "lli", i get "lli: error loading program 'new_prog.bc': Invalid bitcode signature" I have done the followings: 1) used "opt -p -load ..../Decorator.so -dec <prog.bc> new_prog.bc" 2) copied the output

Hi, As far as I know, Instruction class does not inherit "Annotable" Class. Only Function inherits annotable according to the documentation of annotable class. What you are asking would require adding annotations at instruction level, which does not seem to be possible. You can maintain external maps between instructions and your annotations, --Kapil On Thu, Mar 5, 2009 at 7:17 PM,

Hello together, how can i insert annotations in IR ? I want actually write something like: CallInst *call = CallInst::Create( ??? , aBasicBlock); in my pass. Regards Raad -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20090305/cd1db761/attachment.html>

Hello together, I have seen that the analysis-results are stored in llvm-IR as annotations. For example <; preds = %entry> in basicBlock level and <; <i32*> [#uses=2]> for a variable. Is there any documentation about annotations? Regards Raad -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello. I read following article in this ML. I'm implementing the library similar with RAAD's plan. - AST node classes for LLVM-IR - LLVM-Assembly writer class - 100% pure Java - Without any optimizations - Without any frontends (parsers) I would like to release my library publicly if all problems below could be solved. (Although it is in the early stage) My library is the mixture of my

On Tue, Feb 17, 2009 at 12:46 AM, RAAD B <raad_7007 at yahoo.com> wrote: > Hello together, > > I have seen that the analysis-results are stored in llvm-IR as annotations. > For example <; preds = %entry> in basicBlock level and <; <i32*> [#uses=2]> > for a variable. > > Is there any documentation about annotations? That isn't really analysis;

These are the contents of the generated file. Start >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ; ModuleID = '<stdin>' target datalayout =

Hi, how can I create the IR-representation from multiple source-files? Regards Raad -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20090415/9040f657/attachment.html>

0 down vote favorite <http://stackoverflow.com/questions/34049511/how-to-pass-optimization-passes-to-clang#> I'm trying to debug an issue for a new target where a testcase fails with -O1 optimization and passes with -O0 optimization. I got a list of optimization passes being performed when 'clang -O1' is called like this: llvm-as < /dev/null | opt -O1 -disable-output

Hi, i need a sample-code, for which the llvm alias-analysis finds a *must-aliases*. I have tried codes like followings. In all cases, i see just *may-aliases* when i use "opt -aa-eval -print-all-alias-modref-info foo.bc": Regards Raad 1 ========================================== void foo() { int i = 2; int& r = i; } 2 =========================================== void

On 10/6/13 7:23 AM, Rekha R wrote: > Hello, > > I am a beginner in LLVM development with the aim of writing a new > optimization pass. But then before I could do that, I thought of > writing simple passes. I could successfully implement the Hello pass > as given in the doc. Then I wrote a simple Constant Folding pass - > evaluate instructions of the form c=10+20 and

Hello, I am a beginner in LLVM development with the aim of writing a new optimization pass. But then before I could do that, I thought of writing simple passes. I could successfully implement the Hello pass as given in the doc. Then I wrote a simple Constant Folding pass - evaluate instructions of the form c=10+20 and replace all uses of c with 30. Only later did I realize that Clang does this

This sounds good. Similar to Constant folding. Noted :-) Rekha On Tue, Oct 8, 2013 at 1:33 PM, David Tweed <david.tweed at arm.com> wrote: > Hi,**** > > ** ** > > If you're looking for something incredibly simple to get started with it > might be fruitful to implement replacement of particular function calls of > constant arguments with the appropriate result.

Hi Chris, Sounds like an excellent generic approach. I'd love to lend a hand to implement it but I'm afraid it involves a little more in-depth LLVM knowledge than what I currently master, so I'll leave it to Dave and you for now... Talking about performance, for me this optimization was the difference between mem2reg taking 63% of execution time, and having it totally

On Jul 22, 2008, at 10:33 PM, Chris Lattner wrote: > 1. I agree with Alexandre Oliva that the compiler should never "lie" > in debug info. If it has some information that is not accurate, it > should respond with "I don't know" instead of making a wrong guess. > This means that the debugger either says "your variable is certainly > here" or it