similar to: [LLVMdev] LoadInst result

Thanks Sean. It clarified my query. Do you have an answer to my other question (in a different mail-chain) listed below Is there a simple way to check if a given instruction operand (represented by Value *) is a virtual register or otherwise? Context: I am creating a ModulePass for pointer Analysis. BR/Nizam From: "Sean Silva" <chisophugis at gmail.com> To: nizam

Hi Tim, Assume a store instruction. Store has 2 Operands. I can use the store->getOperand(0) and store->getOperand(1) methods to access these operands in form of Value *. Very likely that the operands are stack variables or formal variables or global variables. It is also possible that these operands are LLVM virtual-registers. Is there a way to determine if a given operand is a

Hi Ben, That did help. I continue to notice the virtual register in the program. I use LLVM 3.4. The program i am looking at is a very simple one. Listed below int global_var; int *global_ptr; int32_t main(int32_t argc, char ** argv){ int p = 10; int k = 20; int *pp; char *c_pp; pp = &k; global_ptr = pp; pp = &p; global_ptr = &global_var; return 0; } BR/Nizam

Hi, is there a opt pass that replaces the SSA virtual registers to stack-variables? I want to eliminate the SSA virtual register from my IR. Kindly suggest BR/Nizam -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140201/bdc3909a/attachment.html>

Hello everyone, Can you please tell me if it is possible in LLVM to cast a `Value*` to an `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is true? In my particular piece of code: Value* V1 = icmpInstrArray[i]->getOperand(0); Value* V2 = icmpInstrArray[i]->getOperand(1); if (isa<LoadInst>(V1) || isa<LoadInst>(V2)){ ...

The compilation error is : `error: ‘LD100’ was not declared in this scope.` On Mon, Jan 28, 2013 at 11:31 AM, Alexandru Ionut Diaconescu < alexandruionutdiaconescu at gmail.com> wrote: > Hello everyone, > > Can you please tell me if it is possible in LLVM to cast a `Value*` to an > `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is true? > In my

Folks, I am newbie to llvm! I am writing a simple pass that inherits from ModulePass. I override the runOnModule method. In the method, i am attempting to print all the function in the module and the source-file they appear in. I could print the name of the function using the Module::iterator. I am, however, not able to figure-out the way to identify the source-file for a given

Hi Alexandru, > The compilation error is : `error: ‘LD100’ was not declared in this scope.` > > On Mon, Jan 28, 2013 at 11:31 AM, Alexandru Ionut Diaconescu < > alexandruionutdiaconescu at gmail.com> wrote: > >> Hello everyone, >> >> Can you please tell me if it is possible in LLVM to cast a `Value*` to an >> `Instruction*/LoadInst*` if for example

Alexandru Ionut Diaconescu wrote: > Hello everyone, > > Can you please tell me if it is possible in LLVM to cast a `Value*` to > an `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is > true? http://llvm.org/docs/ProgrammersManual.html#the-isa-cast-and-dyn-cast-templates In my particular piece of code: > > Value* V1 =

LLVM friends, I'm currently trying to make LoopVectorizationLegality class in Transform/Vectorize/LoopVectorize.cpp more modular and eventually move it to Analysis directory tree. It uses several file scope helper functions that do not really belong to LoopVectorize. Let me start from getPointerOperand(). Within LLVM, there are five other similar functions defined. I think it's time to

"Saito, Hideki via llvm-dev" <llvm-dev at lists.llvm.org> writes: > LLVM friends, > > I'm currently trying to make LoopVectorizationLegality class in > Transform/Vectorize/LoopVectorize.cpp more modular and eventually move > it to Analysis directory tree. It uses several file scope helper > functions that do not really belong to LoopVectorize. Let me start

What LoopVectorize.cpp has are the following. Each function may have to have a separate consolidation discussion. I'm bringing up getpointerOperand() since I actually found multiple instances defined/used. DependenceAnalysis.cpp has isLoadOrStore(). LoopAccessAnalysis.cpp has getAddressSpaceOperand(). I'm sure there are others that might be worth discussing within this thread or a follow

Tobias, et al., Attached is the my autovectorization pass. I've fixed a bug that appears when using -bb-vectorize-aligned-only, fixed some 80-col violations, etc., and at least on x86_64, all test cases pass except for a few; and all of these failures look like instruction-selection bugs. For example: MultiSource/Applications/ClamAV - fails to compile shared_sha256.c with an error: error in

Tobias, I've attached the latest version of my autovectorization patch. I was able to add support for using the ScalarEvolution analysis for load/store pairing (thanks for your help!). This led to a modest performance increase and a modest compile-time increase. This version also has a cutoff as you suggested (although the default value is set high (4000 instructions between pairs) because

I recently began hacking around with my first LLVM pass. The big picture is that I would like to insert function calls for each instruction type, and pass some parameters based on the instruction type. Then I will link the output to some C file that implements those functions. Things were going well until I started trying to make function calls with a pointer as a parameter. For example, I would

On 11/17/2011 12:38 AM, Hal Finkel wrote: > Tobias, et al., > > Attached is the my autovectorization pass. Very nice. Will you be at the developer summit? Maybe we could discuss the integration there? Here a first review of the source code. > diff --git a/docs/Passes.html b/docs/Passes.html > index 5c42f3f..076effa 100644 > --- a/docs/Passes.html > +++ b/docs/Passes.html

My pass is looking at StoreInsts acting on global variable that happen to be function pointers. From these StoreInsts I would like to get useful information(the function used if a direct assignment, function pointer used, etc) from the getValueOperand() method. Looking through several examples I see that this can return several things like: GlobalVariable, Function, LoadInst or BitCastInst

Hello everyone ! In my LLVM pass, there is `Intruction* I1`. All the used "I1"s are ICMP instructions. *I1->getOperand(0) returns a `Value*` type. From errs()<<"\n"<<*I1->getOperand(0)<<"\n"; //printed : %3 = load i32* %c, align 4 Printed as expected. But I want to use %c. Do you know how I can get %c ? I need to use the value %c in

Duncan Sands <baldrick <at> free.fr> writes: > > Hi Anshul, > > > I am creating a pass that will pass loaded value by load instruction to an > > external function. > > I don't know how to do it.Please Help. > > your question is too vague for anyone to be able to help you. Add details, > for example provide the code for your pass. > >

Hi all, I have %5 = load i32, i32* %3, align 4 LoadInst and I would like to get reference to the destination ( in this case %5 ). How can I do that? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20181212/1d0bd00c/attachment.html>