similar to: [LLVMdev] getTripCount()

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

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);

Hello, I wrote my own pass which needs to do some loop unrolling. I can perform loop unrolling via opt: opt -mem2reg -loops -loop-simplify -loop-rotate -lcssa -loop-unroll -unroll-count=50 mytest.bc -o mytest.bc This command works perfectly. However, what I really want is to produce the **same behavior** but from my own pass (i.e., I don't want to use opt). I wrote a Module pass which

Hello, I wrote my own pass which needs to do some loop unrolling. I can perform loop unrolling via opt: opt -mem2reg -loops -loop-simplify -loop-rotate -lcssa -loop-unroll -unroll-count=50 mytest.bc -o mytest.bc This command works perfectly. However, what I really want is to produce the **same behavior** but from my own pass (i.e., I don't want to use opt). I wrote a Module pass which

On Aug 6, 2012, at 6:04 AM, Jorge Navas <navas at comp.nus.edu.sg> wrote: > > Hello, > > I wrote my own pass which needs to do some loop unrolling. > > I can perform loop unrolling via opt: > > opt -mem2reg -loops -loop-simplify -loop-rotate -lcssa -loop-unroll > -unroll-count=50 mytest.bc -o mytest.bc > > This command works perfectly. > >

On 4/12/12 3:32 AM, Ivan Llopard wrote: > 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) { >

Hi, For me, getTripCount always returns null, even for trivial loops such as: void simple(int j) { for (int i = 0; i < 10; i++) { j++; } } Looking through the mailing list archive, it appears that getTripCount requires certain optimization passes to run first, but it's not clear which ones. There doesn't seem to be any documentation on this. Does anybody

Hello, I'm having some trouble with getTripCount() ... again. In particular it fails in the first of the following two examples, although it works for the second. By fails, I mean it returns NULL. ---------- example 1 ---------- test1(int *a, const int *ip) { int k; for (k = 0; k < ip[2]; ++k) { a[k] = (k+11)/(k+2); } } ---------- example 2 ---------- test2(int

On Fri, Apr 29, 2005 at 08:10:17AM -0500, Chris Lattner wrote: > AU.addRequiredID(LoopSimplifyID); > > "LoopSimplifyID" is a marker that is used to identify the pass, which is > exported from the .cpp file. I'll have to declare a PassInfo* called LoopSimplifyID inside namespace llvm, in order for that to compile correctly, right? I was wondering why not simply

On Fri, 29 Apr 2005, Sameer D. Sahasrabuddhe wrote: > Just noticed that quite a few passes like LoopSimplify are implemented > in a single .cpp file ... this makes it impossible to specify > LoopSimplify using the "addRequired" method. Was there any particular > reason to do it this way? I wouldn't mind doing the splitting myself, > though I am not using the CVS

Hi John, On 6/5/12 4:31 PM, John Criswell wrote: > On 4/12/12 3:32 AM, Ivan Llopard wrote: >> 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

On 6/5/12 10:39 AM, Ralf Karrenberg wrote: > Hi John, > > On 6/5/12 4:31 PM, John Criswell wrote: >> On 4/12/12 3:32 AM, Ivan Llopard wrote: >>> 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 { >>>

On Sat, Jul 12, 2008 at 3:45 PM, Julio <julio.martin.hidalgo at gmail.com> wrote: > I would need to operate in the two loops in rotated form. It can be > considered a bug or I have to introduce manually the header (or modify > myself the ConsiderForLoop to my particular problem)? Try adding "AU.addRequiredID(LoopSimplifyID);AU.addPreservedID(LoopSimplifyID);" to your

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);         AU.addRequired<llvm::LoopInfo>();       }    

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: > static char ID; > > public: > virtual

hi, On Fri, May 7, 2010 at 8:59 AM, Trevor Harmon <Trevor.W.Harmon at nasa.gov>wrote: > Hi, > > For me, getTripCount always returns null, even for trivial loops such > as: > > void simple(int j) { > for (int i = 0; i < 10; i++) { > j++; > } > } > > Looking through the mailing list archive, it appears that getTripCount > requires

I am trying to add an analysis pass as a FunctionPass, and let LICM (LoopPass) depends upon it. So in LICM.cpp, I have the following: virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesCFG(); AU.addRequired<DominatorTree>(); AU.addRequired<LoopInfo>(); AU.addRequiredID(LoopSimplifyID); AU.addRequired<AliasAnalysis>();

I'm attempting to add some support for hoisting/sinking of memory-using intrinsics in loops, and so I want to use MemoryDependenceAnalysis in LICM, but when I modify getAnalysisUsge to include this : virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesCFG(); AU.addRequired<DominatorTree>(); AU.addRequired<LoopInfo>();

On May 6, 2010, at 6:32 PM, ether zhhb wrote: > As the comment said: > /// The IndVarSimplify pass transforms loops to have a form that > this > /// function easily understands. > > you could try -indvars. After adding -indvars to the opt command, getTripCount still returns null. I suppose it's possible, depending on the scheduling of the pass manager, that

Hi, I am trying to add a new loop pass in which I making a call to get the trip count of the loop using Value *TripCountValue = L->getTripCount() However I am always getting NULL for TripCountValue (confirmed through gdb). I am running this pass after the canonicalization of induction variables: opt --debug-pass=Structure -stats -indvars -loop-rotate -my-loop-pass < main.bc >