similar to: [LLVMdev] How to add a pass inside LLVM pass list

Pls help. On 21 August 2010 17:32, Soumya_Prasad_Ukil <ukil.soumya at gmail.com> wrote: > I have written a simple pass. I have been successful to execute it. I want > LLVM to execute it. I don't know how to include a pass in llvm actual pass > list, such it automatically invokes it just like GVNPre pass or some other > pass. They have already been limked in llvm actual pass

Soumya_Prasad_Ukil wrote: > Pls help. You didn't say what was actually running the passes. (llvm-gcc? clang? opt -some -passes?) What you probably want is to modify one of the lists in include/llvm/Support/StandardPasses.h. Nick > > On 21 August 2010 17:32, Soumya_Prasad_Ukil <ukil.soumya at gmail.com > <mailto:ukil.soumya at gmail.com>> wrote: > > I have

Look I have written a PRE pass. opt is running that pass. I have included my pass name there in include/llvm/Support/StandardPasses.h file. To do that, I have got some error. Because it also requires the definition of the pass in some other file also. I observed how gvn pre pass is added to the pass list. I had followed the same way, but failed. Cna you kindly tell what needs to be done in this

Soumya_Prasad_Ukil wrote: > Look I have written a PRE pass. opt is running that pass. I have > included my pass name there in include/llvm/Support/StandardPasses.h > file. To do that, I have got some error. Because it also requires the > definition of the pass in some other file also. I observed how gvn pre > pass is added to the pass list. I had followed the same way, but failed.

In LLVM, we generally use data structure of another pass by implementing getAnalysisUsage (AnalysisUsage &AU) method. Suppose SOURCE/lib/Transform directory I have added one pass named as pass_1, which calculates all expressions in a program and stores all of them in an Expr array(take it now for granted). Now I added another pass named as pass_2 in the same directory to print all these

Can you tell me where pass_1 is defined? You have used it inside getAnalysis<pass_1>(). Is it the name we generally give to a pass while registry? In this case, don't I need to use getAnalysisUsage (AnalysisUsage &AU) function? On 20 July 2010 02:55, John Criswell <criswell at uiuc.edu> wrote: > Soumya_Prasad_Ukil wrote: > >> >> In LLVM, we generally

Soumya_Prasad_Ukil wrote: > > In LLVM, we generally use data structure of another pass by > implementing getAnalysisUsage (AnalysisUsage &AU) method. Suppose > SOURCE/lib/Transform directory I have added one pass named as pass_1, > which calculates all expressions in a program and stores all of them > in an Expr array(take it now for granted). Now I added another

Your last statement is correct. But still my stand does not change. I want to differentiate ordinary local variable & pointer variables. Let's have a program, int a,b,c,*ptr; I want to extract only the local variables. That's what my question was. I think it is clear now. cast<PointerType>(A->getType() > > )->getElementType() is not working. I am also getting error

Can you guys tell how to recognize local & global variables ? Is there any macro on Value* defined in LLVM? -- regards, soumya prasad ukil -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100721/cdc89d56/attachment.html>

How to recognize pointer variable & ordinary variable? I have tried with "isa<PointerType>(V->getType())", but failed. -- regards, soumya prasad ukil -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100722/8a751551/attachment.html>

Hi Soumya_Prasad_Ukil, > Can you guys tell how to recognize local & global variables ? Is there > any macro on Value* defined in LLVM? Global variable: isa<GlobalVariable>(V) Local variable: isa<AllocaInst>(V) Ciao, Duncan.

Hi Soumya_Prasad_Ukil, > How to recognize pointer variable & ordinary variable? I have tried with > "isa<PointerType>(V->getType())", but failed. I'm not sure what you are asking, but if you are asking whether an alloca instruction A represents local memory of pointer type, you can use A->getAllocatedType(). You can also use

I have created a new basic block. Now I want to make copy of instructions from one basic block to another . How to do that ? -- regards, soumya prasad ukil -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20101115/ddb0c4ab/attachment.html>

How to convert ConstantInt* to value*? -- regards, soumya prasad ukil -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20101102/af73eabb/attachment.html>

On Nov 14, 2010, at 12:13 PM, Soumya Prasad Ukil wrote: > I have created a new basic block. Now I want to make copy of instructions from one basic block to another . How to do that ? See CloneBasicBlock @ Transforms/Utils/Cloning.h - Devang

I want to do the following: suppose the program structure: bb / \ bb1 bb2 \ / bb3

It seems the GVNPRE pass has been removed from the main trunk, though it is present in the 2.6 release. From the llvm-commits archive, I found that it was removed  with this checkin: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090928/088214.html "remove the GVNPRE pass. It has been subsumed by the GVN pass." Does the GVN pass optimize all the partial redundancies

Hi LLVMers, I am a PHD student in CS dept in UIUC, I am doing a project for Vikram's course, it is about PRE. I would like to know why you didn't choose SSAPRE in LLVM, since it seems to be more suitable for LLVM (it can operate directly on SSA form and avoid the conversion between SSA and bit-vector). Can anyone tell me the reason? Xuehai

Hello, I am doing a course project of "Adding the strength reduction in existing GVNPRE implementation". But the problem which I am facing is that for many sample programs I tried, the "gvnpre" pass of opt doesn't perform PRE and it leaves the code as it is. This is my sample program and it should do PRE on it but opt is not performing it. Kindly help me out in this part.

Yeah that's true. But I want somewhat different. Through Instruction how do u know that? If an instruction like %a = alloca i32 is there, how to get the variable 'a' ? Then on that variable we can check as you have said Right? How to capture that variable ? On 21 July 2010 16:07, Duncan Sands <baldrick at free.fr> wrote: > Hi Soumya_Prasad_Ukil, > > > Can you guys