similar to: [LLVMdev] Loop Info Stability

On Thu, Aug 12, 2010 at 5:22 PM, Tobias Grosser <grosser at fim.uni-passau.de>wrote: > On 08/12/2010 09:41 PM, Douglas do Couto Teixeira wrote: > >> Dear guys, >> >> I am having problems to obtain good information from the LoopInfo. >> I am always getting a trip count of 0, even though I am clearly passing >> a loop with a constant bound. I am using

In addition to the link below, please check for functions like "llvm.debug.declare", "llvm.debug.value", as you will not get LoopInfo for these.   Pankaj   ________________________________ From: Devang Patel <dpatel at apple.com> To: Ryan Taylor <ryta1203 at gmail.com> Cc: llvmdev at cs.uiuc.edu Sent: Wednesday, November 30, 2011 11:08 PM Subject: Re: [LLVMdev]

The following code is causing an "UNREACHABLE executed!" and a stack dump, any ideas? namespace { struct myPass : public CallGraphSCCPass { static char ID; myPass() : CallGraphSCCPass(ID) {} virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll(); AU.addRequired<LoopInfo>(); } virtual bool runOnSCC(CallGraphSCC &SCC)

Thanks for the info. Curious, do you know if there is an opt that will put all loops, including nested ones, in functions (ie each loop in it's own function)? What I'm trying to do is create a way for each loop to have only one exit. I want all loops to be single exit loops? I can write my own pass but I'd rather not. I think that if I can put each loop into it's own function

On Tue, Nov 29, 2011 at 6:59 PM, Ryan Taylor <ryta1203 at gmail.com> wrote: > The following code is causing an "UNREACHABLE executed!" and a stack dump, > any ideas? The stack might be handy. > namespace { >   struct myPass : public CallGraphSCCPass { >   static char ID; >   myPass() : CallGraphSCCPass(ID) {} >   virtual void getAnalysisUsage(AnalysisUsage

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, 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 &&

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&

UNREACHABLE executed! 0 opt 0x00000000008edc2f 1 opt 0x00000000008edfda 2 libpthread.so.0 0x00007f9c8e69bc60 3 libc.so.6 0x00007f9c8d986d05 gsignal + 53 4 libc.so.6 0x00007f9c8d98aab6 abort + 390 5 opt 0x00000000008da974 llvm::llvm_unreachable_internal(char const*, char const*, unsigned int) + 356 6 opt 0x000000000087e046 7 opt

Hi, I'm trying to use the function getAnalysis. This is the code I'm using : void getAnalysisUsage(AnalysisUsage &AU) const { AU.addRequired<LoopInfo>(); AU.setPreservesAll(); } virtual bool runOnModule(Module &M) { LoopInfo &LI = getAnalysis<LoopInfo>(); } I get following error when I try to run my pass : opt:

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 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

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 =

Below is a stripped down version of the pass. The compile line is: clang -O0 -S -emit-llvm -o test.S test.c && opt -S -mem2reg -load <path to extract lib> -extract < test.S > test_opt.S #include "llvm/Analysis/DependenceAnalysis.h" #include "llvm/Analysis/LoopInfo.h" #include "llvm/Analysis/LoopPass.h" #include

Hi again, I come back to this issue with an example. It's a pass which does nothing but throw the 'Unable to schedule' error. namespace { struct MyPass : public FunctionPass { static char ID; // Pass identification, replacement for typeid MyPass() : FunctionPass(ID) { initializeMyPassPass(*PassRegistry::getPassRegistry()); } virtual void

nitisha warkari wrote: > Hi, > > I'm trying to use the function getAnalysis. This is the code I'm using : > > void getAnalysisUsage(AnalysisUsage &AU) const { > AU.addRequired<LoopInfo>(); > AU.setPreservesAll(); > } > > virtual bool runOnModule(Module &M) { > LoopInfo &LI = getAnalysis<LoopInfo>(); > >

Hi, I'm writing a function pass which is dynamically loaded by opt and I need some analysis and passes to be run before my pass: virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.addRequired<LoopInfo>(); AU.addPreserved<LoopInfo>(); AU.addRequiredID(LoopSimplifyID); AU.addPreservedID(LoopSimplifyID);

Thank You. Actually i pass polly canonaclize IR to my new created polly pass called "mypass". Mypass should first detect scops then find depedndencies as the mechanism conventional approach. Now i know how to write llvm pass here i am writing pass as loadable module first afterwards i will integrate it with opt in the end. I tried writing following code. Could you please help me on

Hi, I am trying to use the DependenceAnalysis pass to get the Distance vector for the innermost loop. I am in LLVM learing process. I have used the following code inside my original code to get the distance vector. It is not giving any syntax error but it is has some logical but and giving segmentation fault. void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll();

Hi developers, I have some problems using a non-default alias analysis. I wrote a modulepass which needs a functionpass. The functionpass needs a type bases alias analysis instead of the basicaa. I added the command line parameter for this analysis to the opt invocation as follows: opt -tbaa -global-live-values test.bc The 'global-live-values' pass preserves all and requires a