search for: looppass

...; As you said i downloaded arm toolchain from codesourcery(2009q3 with > gcc 4.4.1 version).. if i use this toolchain i am getting the > following error.. > > make[2]: Entering directory > `/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/lib/Analysis' > llvm[2]: Compiling LoopPass.cpp for Release build > if arm-none-linux-gnueabi-g++ > -I/home/prasanth/LLVM_ARM/llvm-with-armgcc433/llvm/include > -I/home/prasanth/LLVM_ARM/llvm-with-armgcc433/llvm/lib/Analysis > -I/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/include > -I/home/prasanth/LLVM_ARM/llvm-with-...

Hi, As you said i downloaded arm toolchain from codesourcery(2009q3 with gcc 4.4.1 version).. if i use this toolchain i am getting the following error.. make[2]: Entering directory `/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/lib/Analysis' llvm[2]: Compiling LoopPass.cpp for Release build if arm-none-linux-gnueabi-g++ -I/home/prasanth/LLVM_ARM/llvm-with-armgcc433/llvm/include -I/home/prasanth/LLVM_ARM/llvm-with-armgcc433/llvm/lib/Analysis -I/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/include -I/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/lib/An...

Hi Tim, > From: Tim Creech <tcreech at umd.edu> > Subject: [LLVMdev] IVUsers (LoopPass) analysis in a ModulePass? > Date: September 1, 2011 11:46:28 AM PDT > To: llvmdev at cs.uiuc.edu > > Hi all, > I have a loadable ModulePass which does transformations, and I would like to > use IVUsers analysis within it. I noticed when I try to do this (via > the usual addR...

I'm wondering if the documentation for LoopPass ( http://llvm.org/docs/WritingAnLLVMPass.html#LoopPass) is misleading or incorrect (or if I'm just missing something.) The documentation states: "The doFinalization method ... is called when the pass framework has finished calling runOnLoop<http://llvm.org/docs/WritingAnLLVMPass.html#r...

Prasanth J wrote: > > Hi all, > with reference to the reply below, I downloaded toolchain from > codesourcery (arm-2009q1-203-arm-none-linux-gnueabi) with gcc 4.3.3... > when i compile llvm+clang with this toolchain i am getting the > following error > > make[4]: Entering directory >

Hi Edvard, _ZTIN4llvm8LoopPassE is "typeinfo for llvm::LoopPass". LLVM is built without typeinfo, so you will need to build your pass with -fno-rtti. Ciao, Duncan. > I'm trying to implement LoopPass. > Here is simple code : > > class LoopParser: public llvm::LoopPass > { > public: &g...

Hi Stephen, On 13/12/12 18:58, Stephen McGruer wrote: > I'm wondering if the documentation for LoopPass > (http://llvm.org/docs/WritingAnLLVMPass.html#LoopPass) is misleading or > incorrect (or if I'm just missing something.) The documentation states: > > "The doFinalization method ... is called when the pass framework has finished > calling runOnLoop <http://llvm.org/docs/...

...ults. Is there any explanation why loop passes cannot be scheduled between two module passes? Perhaps I misunderstood the behaviour of pass managers. I paste here my "usage" information: int main(...){ Module m = ... //Read module PassManager pm; pm.add(new ModPass1); pm.add(new LoopPass); pm.add(new ModPass2); pm.run(m); } class ModPass1 : public ModulePass{ virtual void getAnalysisUsage(AnalysisUsage&AU) const{ AU.setPreservesAll(); } }; class LoopPass : public LoopPass{ virtual void getAnalysisUsage(AnalysisUsage&AU) const{ AU.setRequires<...

Hello . I'm trying to implement LoopPass. Here is simple code :    class LoopParser: public llvm::LoopPass   {     public:       static char ID;     public:       virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const       {         AU.addRequiredID(llvm::LoopSimplifyID);         AU.addPreservedID(llvm::LoopSimplifyID);      ...

On Sun, Dec 16, 2012 at 7:23 AM, Duncan Sands <baldrick at free.fr> wrote: > Hi Stephen, > > > On 13/12/12 18:58, Stephen McGruer wrote: > >> I'm wondering if the documentation for LoopPass >> (http://llvm.org/docs/**WritingAnLLVMPass.html#**LoopPass<http://llvm.org/docs/WritingAnLLVMPass.html#LoopPass>) >> is misleading or >> incorrect (or if I'm just missing something.) The documentation states: >> >> "The doFinalization method ... is cal...

...toolchain from codesourcery(2009q3 with > > gcc 4.4.1 version).. if i use this toolchain i am getting the > > following error.. > > > > make[2]: Entering directory > > `/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/lib/Analysis' > > llvm[2]: Compiling LoopPass.cpp for Release build > > if arm-none-linux-gnueabi-g++ > > -I/home/prasanth/LLVM_ARM/llvm-with-armgcc433/llvm/include > > -I/home/prasanth/LLVM_ARM/llvm-with-armgcc433/llvm/lib/Analysis > > -I/home/prasanth/LLVM_ARM/llvm-with-armgcc441/llvm-obj/include > > -I/home/pra...

...Loop analysis pass - IVUsers. It seems unlikely that the loop nest walk is critical to computing this or preserving it. - Almost all of the things we think of as "required" and dependencies are actually *transforms* that canonicalize the form of a loop into particular shapes. - Because LoopPasses are nested inside of some other pass manager, we can't compute function analyses after transforming loops with LoopSimplify and/or LCSSA, and have these analyses available to other LoopPasses such as the vectorizer and unroller. - LoopPasses don't obey the typical "rules" of a...

..., Chandler Carruth wrote: > On Sun, Dec 16, 2012 at 7:23 AM, Duncan Sands <baldrick at free.fr > <mailto:baldrick at free.fr>> wrote: > > Hi Stephen, > > > On 13/12/12 18:58, Stephen McGruer wrote: > > I'm wondering if the documentation for LoopPass > (http://llvm.org/docs/__WritingAnLLVMPass.html#__LoopPass > <http://llvm.org/docs/WritingAnLLVMPass.html#LoopPass>) is misleading or > incorrect (or if I'm just missing something.) The documentation states: > > "The doFinalization meth...

Are LoopPasses allowed to maintain state between runOnLoop invocations? The documentation is not clear on this point. -Dave

> Personally, I would make everything a FunctionPass.   What if a FunctionPass requires the results of a LoopPass? Is there a way to get all loops of a function without using LoopPass and LoopInfo?

...be > scheduled between two module passes? Perhaps I misunderstood the > behaviour of pass managers. > > I paste here my "usage" information: > > int main(...){ > > Module m = ... //Read module > PassManager pm; > > pm.add(new ModPass1); > pm.add(new LoopPass); > pm.add(new ModPass2); > pm.run(m); > > } > > class ModPass1 : public ModulePass{ > > virtual void getAnalysisUsage(AnalysisUsage&AU) const{ > AU.setPreservesAll(); > } > }; > > class LoopPass : public LoopPass{ > > virtua...

...s well in another guise: when we unroll a loop, we need to re-run a bunch of the passes, but re-running them when we *haven't* successfully unrolled a loop is a total waste. I'd like to think more about this, so a simpler option: what if we *just* extract LoopSimplify and LCSSA? If all the LoopPasses preserve these, then them being function passes would be fine. This would allow us to at least *start* writing function passes over loops (like the LoopVectorizer) rather than being forced to phrase them as LoopPasses. I think I could implement this simpler option right away, and that would unbl...

Hi, Lately LLVM has been adding -fno-rtti to most of the compiler. I have a pass which uses LoopPass and which inherits from FunctionPass and a class of my own. If I compile my code with ENABLE_RTTI=1, I can't dynamically load the shared object since it won't be able to find the symbol for LoopPass's typeinfo. undefined symbol: _ZTIN4llvm8LoopPassE $ c++filt _ZTIN4llvm8LoopPassE typei...

On Aug 19, 2008, at 12:32 PM, David Greene wrote: > Are LoopPasses allowed to maintain state between runOnLoop > invocations? What kind of information are you looking to maintain between runOnLoop invocations ? > > The documentation is not clear on this point. doInitialization() and doFinalization() will be run for each pass before and after ru...

Hi all I want my Looppass add some global variables(only once) before processing each loops(many times)in the module. Currently I add all global variables in the doInitialization of Looppass. It seems that doInitialization is called for each function of the module. Is it so? How to make my pass processing globals only once...