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...st(ElementPtrC, "OldCounterSize", InsertPos); Value *OldCounterSize =new LoadInst(ElementPtrC, "", InsertPos); //create a getelementptr instruction: we want get &Counters[OldCounterSize] std::vector<Value*>new_idx; new_idx.push_back(OldCounterSize); // ERROR? Value *nextaddr = GetElementPtrInst::Create(Counters, new_idx.begin(), new_idx.end(), "", InsertPos); Thanks! ? 2011/5/18 16:04, Duncan Sands ??: > Hi Guangming Tan, > >>>> GlobalVariable: >>>> int *counter; //counter the number of load/store operations in run-time >&gt...

Hi, I am trying to rewrite loop addressing to suit my target. I wonder if there is a simple way to find out if the current SelectionDAG is a loop-body? I tried to rewrite LLVM code to do address arithmetic, ie %nextaddr = add i16* %curraddr, 4, but I could not find a way to make this work. thanks, Jonas -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110120/8abf74a5/attachment.html>

...please help check why it still does not work: next time please be more explicit about exactly what goes wrong. > //create a getelementptr instruction: we want get &Counters[OldCounterSize] > std::vector<Value*>new_idx; > new_idx.push_back(OldCounterSize); // ERROR? > Value *nextaddr = GetElementPtrInst::Create(Counters, new_idx.begin(), > new_idx.end(), "", InsertPos); You need to push an index of zero before pushing the OldCounterSize index. Ciao, Duncan.

Hi Guangming Tan, >>> GlobalVariable: >>> int *counter; //counter the number of load/store operations in run-time >>> int *counterArray; //record the load/store addresses >> strictly speaking these are not arrays, they are pointers. Also, you have >> written them in some kind of C-style idiom. What are the declarations in >> LLVM IR? > const Type

于 2011/5/18 14:29, Duncan Sands 写道: > Hi Tan Guangming, > >> I want to access an array in my instrumentation code. For example: >> >> GlobalVariable: >> int *counter; //counter the number of load/store operations in run-time >> int *counterArray; //record the load/store addresses > strictly speaking these are not arrays, they are pointers. Also, you have