similar to: [LLVMdev] `MDNode *getLoopID () const` missing from LoopInfo.h

Hi, The getLoopID method was missing from LLVM 3.3's LoopInfo.h. But the latest documentation has it ... probably the documentation is lagging behind in the update? Gai

An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200320/34cdec77/attachment.html> -------------- next part -------------- Hi all, I have encountered some issues with the preservation of the location of llvm.loop metadata (containing optimisation hints), and would appreciate some feedback on the issue. The IR language description states that

Hi, Assume there's an open source compiler implementation based on LLVM/Clang. What is the neatest way to print a list of LLVM APIs used in that open source project? Thanks. Best, Jiading

Thanks John. Out of curiosity, I wonder if it's possible to summarize the LLVMpass-specific design patterns. I.e., the software engineering techniques that were used to design/implement the LLVM Pass Infrastructure. Equivalently, this may also answer the question "Why is the code this way". This visibility can improve understanding and that is likely to improve quality as more

Thanks Devang and John. My pass is actually a loop pass, not a function pass. So, I couldnt override the getAnalysisUsage. I am in a loop pass, I know the outermost loop. Now How can I get the loopInfo from here? I couldn't find helpful methods in the LoopInfo class documents. On Mon, Feb 28, 2011 at 5:52 PM, John Criswell <criswell at illinois.edu>wrote: > On 2/28/11 4:43 PM,

On 3/3/11 3:09 PM, Wenbin Zhang wrote: > Hi all, > I tried to have a LoopInfo object in a function pass, add > addRequired<LoopInfo> in getAnalysisUsage, and then use > getAnalysis<LoopInfo> in runOnFunction(). It worked OK. > Now I want to have a module pass to traverse the functions, and > similarly I want to have to loop information of the functions. When I >

I think this assertion failure may be caused by the getAnalysisUsage(). Mine is like the following: class myclass : public ModulePass{ ... virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.addRequired<LoopInfo>(); } ... } Is it enough? Thanks! Best, --Wenbin ----- Original Message ----- From: Wenbin Zhang To: John Criswell Cc: llvmdev at

On Mon, Feb 28, 2011 at 6:04 PM, Naznin Fauzia <laboni14 at gmail.com> wrote: > Thanks Devang and John. My pass is actually a loop pass, not a function > pass. So, I couldnt override the getAnalysisUsage. > A LoopPass is no different from a FunctionPass here. You can use getAnalysisUsage and getAnalysis in a LoopPass. > I am in a loop pass, I know the outermost loop. Now How

Hi, My project is outside of LLVM. Now I need get LoopInfo for a function. I know that if my project were a pass inside LLVM. I can get LoopInfo by "AU.addRequired<LoopInfo>()" and "getAnalysis<LoopInfo>()". Also I know I can get a function pass by "llvm::FunctionPass* dce = llvm::createDeadCodeEliminationPass(); dce->runOnFunction(*func)" outside of

On Feb 28, 2011, at 2:35 PM, Naznin Fauzia wrote: > Hi all, > > How Can I get the Loops around an Instruction? > > I know I can get the basic block of an instruction using inst.getParent() which returns a BasicBlock*. Now I want to use the getLoopFor(BasicBlock) method of the class LoopInfo. > But I dont know how to get the LoopInfo. > > BasicBlock* bb =

---------- Forwarded message ---------- From: Ryan Taylor <ryta1203 at gmail.com> Date: Thu, Nov 10, 2011 at 10:31 AM Subject: Re: [LLVMdev] Problem getting LoopInfo inside non-LoopPass To: Devang Patel <dpatel at apple.com> I need to iterate bottom up on the nodes, but within that I want to break up BBs within a loop. I could just create a loop pass as another opt and call that, I

hi, On Wed, Sep 15, 2010 at 8:21 PM, Mariusz Grad <mariusz.grad at gmail.com> wrote: > Hi, > > I wrote tiny ModulePass which iterates over functions and then uses getAnalysis<LoopInfo> in order to get informations about the loop. > It compiles smoothly, but whenever I try to run it I got error like this: > opt: .. PassAnalysisSupport.h:203: AnalysisType&

Hi, I am running into the same issue with a module pass, that calls LoopInfo.(does not call DominatorTree) I am using RegisterPass, since it is a dynamically loaded module(as per lib/Transforms/Hello) It does seem possible from the discussion, to use LoopInfo inside a ModulePass. I am wondering what the fix to this problem was. Also, the code works in 2.7.(I did not try 2.8) Thanks, Arushi

On 2/28/11 4:43 PM, Devang Patel wrote: > > On Feb 28, 2011, at 2:35 PM, Naznin Fauzia wrote: > >> Hi all, >> >> How Can I get the Loops around an Instruction? >> >> I know I can get the basic block of an instruction using >> inst.getParent() which returns a BasicBlock*. Now I want to use the >> getLoopFor(BasicBlock) method of the class

Hi, My project is outside of LLVM. Now I need get LoopInfo for a function. I know that if my project were a pass inside LLVM. I can get LoopInfo by "AU.addRequired<LoopInfo>()" and "getAnalysis<LoopInfo>()". Also I know I can get a function pass by "llvm::FunctionPass* dce = llvm::createDeadCodeEliminationPass(); dce->runOnFunction(*func)" outside of

On Thursday 11 March 2010 12:36:55 Jochen Wilhelmy wrote: > Hi! > > I'd like to analyze a function with the llvm::LoopInfo pass and then > write some info to disk. I create a FunctionPassManager and insert it and > a DominatorTree which is required by LoopInfo. > As it turns out the analysis info is only available to other > passes and gets cleared when the run function of

Thanks John, I modify my code to like this: bool XXX::ModulePass(Module &M){ .... LoopInfo &li = getAnalysis<LoopInfo>(fi); .... } Here fi is a Function* pointing to main(). Now when I run the pass, another error shows up: AnalysisType& llvm::Pass::getAnalysisID(const llvm::PassInfo*, llvm::Function&) [with AnalysisType = llvm::LoopInfo]: Assertion `ResultPass

Hi, I was looking at the LoopInfo Analysis pass as an example, and found it defined the isAnalysis() method to return true. I assumed the method was overriden from some superclass (Pass, probably) and present in all analysis passes. However, a better look turns out that the method isn't really used anywhere. PassInfo does define the same method which is used, but PassInfo is not a superclass

Thanks for the reply. The LoopInfo pass can actually identify the loop I mentioned. My former question is due to a bug in my pass. What I worried is that LoopInfo can not identify all the natural loops for the benchmarks I use, but now I haven't found any such cases. Bo On Sun, May 1, 2011 at 4:24 PM, John Criswell <criswell at illinois.edu> wrote: > On 4/30/11 8:52 AM, Bo Wu

Hi, I wrote tiny ModulePass which iterates over functions and then uses getAnalysis<LoopInfo> in order to get informations about the loop. It compiles smoothly, but whenever I try to run it I got error like this: opt: .. PassAnalysisSupport.h:203: AnalysisType& llvm::Pass::getAnalysisID(const llvm::PassInfo*) const [with AnalysisType = llvm::LoopInfo]: Assertion `ResultPass &&