similar to: [LLVMdev] Help on LLVM Instrumentation

Hi, Thank Brian Gaeke so much. Following TraceBasicBlocks.cpp, I modified the code as below and could insert instruction or function I need into anywhere in Module. But it works well without BB->getInstList().push_back(InstrCall), and if I add the BB->getInstList().push_back() following new CallInst(), I got error information when runing opt. What is the reason for it? And is it necessary

Hello, I have a problem of generating a load instruction. The LLVM bytecode is: ------------------------ entry: ... %2 = call i32 (...)* @atoi(i8*%1) nounwind /*<- Insertpos*/ ... -- bb1: .. %5 = icmp sgt i32 %2, %i.0 ... ----------------- Now I have pb: pointer to the Value object of *%2* of bb1. Here, I want to generate a load instruction and I did it as: new LoadInst(pb,

Andy, I've described that issue (see below) when you were out of town... I think I am getting more context on it. Please take a look... So, in short, when the new MI scheduler performs move of an instruction, it does something like this: // Move the instruction to its new location in the instruction stream. MachineInstr *MI = SU->getInstr(); if (IsTopNode) {

Andy, Lang, Thanks for the suggestion. I have spent more time with it today, and I do see some strange things in liveness update. I am not at the actual cause yet, but here is what I got so far: I have the following live ranges when I start scheduling a region: R2 = [0B,48r:0)[352r,416r:5)... R3 = [0B,48r:0)[368r,416r:5)... R4 = [0B,32r:0)[384r,416r:4)... R5 = [0B,32r:0)[400r,416r:4)...

Hi, 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 //increase the counter if a load/store is performed std::vector<Constant *>index(2); index[0] = Constant::getNullvalue(Type:getInt32Ty(Context)); index[1] =

On Aug 28, 2012, at 8:18 AM, Sergei Larin <slarin at codeaurora.org> wrote: > > I've described that issue (see below) when you were out of town... I think > I am getting more context on it. Please take a look... > > So, in short, when the new MI scheduler performs move of an instruction, it > does something like this: > > // Move the instruction to its new

Hi Sergei, Andy, Sorry - I got distracted with some other work. I'm looking into this and PR13719 now. I'll let you know what I find out. Sergei - thanks very much for the investigation. That should help me pin this down. Cheers, Lang. On Tue, Aug 28, 2012 at 2:33 PM, Sergei Larin <slarin at codeaurora.org> wrote: > Andy, Lang, > > Thanks for the suggestion. >

On Dec 2, 2011, at 12:40 PM, Evan Cheng wrote: > There have been quite a bit of discussions about adding machine instruction bundle to support VLIW targets. I have been pondering what the right representation should be and what kind of impact it might have on the LLVM code generator. I believe I have a fairly good plan now and would like to share with the LLVM community. Let me add some

Zheng Wang <jason.wangz at gmail.com> writes: > I have a problem of generating a load instruction. The LLVM bytecode is: > > ------------------------ > entry: > ... > %2 = call i32 (...)* @atoi(i8*%1) nounwind > /*<- Insertpos*/ > ... > > -- > bb1: > .. > %5 = icmp sgt i32 %2, %i.0 > ... > ----------------- > > > Now I have >

Andy, Jacob, I have ported Hexagon MI scheduler to use the new scheduler infrastructure, but one of my tests triggers an assert in LiveInterval update. On the surface it does not make much sense to me, so I wonder if this is something you readily recognize, before I try to prop it open... The assert is: lib/CodeGen/LiveInterval.cpp:266: llvm::LiveRange*

Hi Lang, Just one more quick question. in LiveIntervalAnalysis.cpp In SlotIndex findLastUseBefore(unsigned Reg, SlotIndex OldIdx) Did you really mean to use for (MachineRegisterInfo::use_nodbg_iterator UI = MRI.use_nodbg_begin(Reg), UE = MRI.use_nodbg_end(); UI != UE; UI.skipInstruction()) {} Aren't we currently dealing with units,

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 written them in some kind of C-style idiom. What are the declarations

On Mon, 7 Feb 2005, Tanu Sharma wrote: > I have been trying to randomize blocks in a program and modified > "BasicBlockPlacement.cpp" for the purpose but getting segmentation > fault.I am not able to determine the problem.Can anyone please decrypt > these error messages or suggest what might be the possible cause of > failure? I'd be happy to fix this, but I need

On Aug 13, 2012, at 8:34 AM, Sergei Larin <slarin at codeaurora.org> wrote: > Andy, > > Yes, this is what Arnold has suggested also, and from this point it looks > like it should work, but it will require parsing the bundle every time we > care to know whether this is a real use or a conditional def. This might > become awkward... but I guess I should provide a better

Hello Jakob and everyone, I am observing an issue with MCRegUnitIterator in my back end, and trying to reverse engineer some of the table gen magic around it, but if you or someone readily knows the answer, I would highly appreciate it. Here is the problem. In my back end we have a rather simple int register file structure: // Integer registers. def R0 : Ri< 0, "r0">,

Thanks a lot for replying Chris, I m trying to randomize the blocks in a program.I generate a random number( between the current "InsertPos" and the last block), and then iterate through the list of basicblocks , picking up block with position equal to that of the random number and place it into the current InsertPos and increment InsertPos. Running it like this:

Lang, I think I am getting closer to understanding this. The findLastUseBefore() should probably look something like this: // Return the last use of reg between NewIdx and OldIdx. SlotIndex findLastUseBefore(unsigned Reg, SlotIndex OldIdx) { SlotIndex LastUse = NewIdx; if (TargetRegisterInfo::isPhysicalRegister(Reg)) { for (MCRegUnitRootIterator Roots(Reg,

Hi, I want to insert a function with a void type parameter, for example: int foo(void); OI declared fcall2 = M.getOrInsertFunction("foo", IntegerType::get(M.getContext(), 32), Type::getVoidTy(M.getContext())); then the question is how to get the void type value to make the CallInst inserted sucessfully? (what should be ********) CallInst::Create(fcall2, ******,

Hi Sergei, Register units != sub registers. Register units are an abstraction to describe overlapping of registers effectively. You probably wanted to use MCSubRegIterator. On Thu, Aug 30, 2012 at 2:30 PM, Sergei Larin <slarin at codeaurora.org> wrote: > Hello Jakob and everyone, > > I am observing an issue with MCRegUnitIterator in my back end, and trying > to reverse

Thank you, Duncan. I rewrote the code, please help check why it still does not work: //declare global variable const Type *IntTy = Type::getInt32Ty(M.getContext()); const Type *ATyC = ArrayType::get(Type::getInt64Ty(M.getContext()), 1); GlobalVariable *CounterSize = new GlobalVariable(M, ATyC, false, GlobalValue::InternalLinkage,