similar to: [LLVMdev] get ref to parent instruction

On Tue, Jan 8, 2013 at 3:06 PM, Eduardo <erocha.ssa at gmail.com> wrote: > Hi all, > > How can I get a reference to an instruction if I have a reference to > an operand? For example, let suppose I have a reference to the > ConstantExpr "getelementptr inbounds" in the following instruction: > > %4 = getelementptr i32* getelementptr inbounds ([8 x i32]* >

Eduardo <erocha.ssa at gmail.com> writes: > How can I get a reference to an instruction if I have a reference to > an operand? For example, let suppose I have a reference to the > ConstantExpr "getelementptr inbounds" in the following instruction: > > %4 = getelementptr i32* getelementptr inbounds ([8 x i32]* > @__mem_grid_MOD_nnyp, i32 0, i32 0), i32 %3 >

Hi Oscar: In instructions like the one I showed can I expect that Value::use_begin and Value::use_end will return only the getelementptr or there is a chance I will get other users of that constant? Thanks a lot, Eduardo On Jan 8, 2013 9:39 PM, "Óscar Fuentes" <ofv at wanadoo.es> wrote: > Eduardo <erocha.ssa at gmail.com> writes: > > > How can I get a reference

The current BasicCallGraph will miss call sites like this: %tmp86 = call i8* (...)* bitcast (i8* ()* @find_ispell to i8* (...)*)( ) ; <i8*> [#uses=1] Here the direct user of @find_ispell is a ConstantExpr. I added several lines of code to address this case. Below is the output of command: svn diff lib/Analysis/IPA/CallGraph.cpp Attached is LLVM asm files with such function calls.

Hi During a pass, the XCore target lowers thread local global variables by turning them into global variable arrays indexed by the (max 8) thread ID. (see XCoreLowerThreadLocal.cpp) This works fine for instructions e.g. GetElementPtrInst But can't be done for constants e.g. GetElementPtrConstantExpr Thus I would like to replace GetElementPtrConstantExpr with GetElementPtrInst when it is

On Thu, 12 Jul 2007, Zhongxing Xu wrote: > The current BasicCallGraph will miss call sites like this: > %tmp86 = call i8* (...)* bitcast (i8* ()* @find_ispell to i8* (...)*)( ) > ; <i8*> [#uses=1] > > Here the direct user of @find_ispell is a ConstantExpr. > I added several lines of code to address this case. > Below is the output of command: svn diff

I am doing inter-procedural static analysis, so I need to do DFS of call graph. llvm-gcc sometimes generates this kind of call instruction, which cause the call graph to be incomplete. But thanks for your information, instcombine really solves the problem. On 7/17/07, Chris Lattner <sabre at nondot.org> wrote: > > On Thu, 12 Jul 2007, Zhongxing Xu wrote: > > The current

Forgot cc, the entire group. How can deterministically iterate over the uses of a variable. i.e. the uses should be any particular order that doesn't change from execution to execution of the opt tool. To make myself more clearer, here is a snippet of code that has Values reordered each time I analyze a particular piece of code(which doesn't change) with the LLVM opt tool and my LLVM

On Sat, Aug 9, 2014 at 6:06 AM, Tim Northover <t.p.northover at gmail.com> wrote: > Hi Rob, > > On 9 August 2014 02:03, Rob Jansen <jansen at cs.umn.edu> wrote: > > Why is the first for loop not equivalent to the second? > > In the second loop, "*ui" is an llvm::Use object. It's owned by a > User, but isn't a subclass of one. To match the

On Apr 14, 2009, at 1:49 PM, Luke Dalessandro wrote: > > On Apr 14, 2009, at 12:48 PM, Brice Lin wrote: > >> I just read the LLVM Programmer's Manual, which mentions (but >> specifically does not include any details of) the InstVisitor >> template. Could someone please provide an example of how to use this >> template to find (as an example) all CallSites for

Hi all, How can I create an llvm::GetElementPtrInst in which the pointer and the index are in registers previously loaded with llvm::LoadInst ? I mean, the generated instruction will be like this: %1 = getelementptr i8* %myreg1, i32 %myreg2 here, %myreg1 and %myreg2 are previously created by load instructions (llvm::LoadInst). Please, let me know if there is an example of something similar.

Hi, all I try to get the Instructions where one function use the global variable. for (llvm::Module::global_iterator gvar_iter = M.global_begin(); gvar_iter != M.global_end(); gvar_iter++) { llvm::GlobalVariable *gvar = &*gvar_iter; llvm::errs() << "const global var: " << gvar->getName() << "\n"; for (

Hi James, Thanks for your quick reply. > I assume because you asked this question, something went wrong when using the above method. What was it? :) No, I am not using this method. I was trying to create a llvm::GetElementPtrInst . I didn't create IRBuilder. I am writing a ModulePass that insert new instruction to an existing Module. Besides, how can you get a reference to myreg1 ?

Thanks a lot for your help Matthijs! :) basically this does the job quite nicely I think: for (llvm::GlobalVariable::use_iterator U = gv->use_begin(); U != gv->use_end(); ++U) { llvm::Instruction *I = llvm::cast<llvm::Instruction>(U); I->replaceAllUsesWith(constPtr); I->eraseFromParent(); } Cheers, Ralf Matthijs Kooijman wrote: > Hi Ralf, > > >> I

I just read the LLVM Programmer's Manual, which mentions (but specifically does not include any details of) the InstVisitor template. Could someone please provide an example of how to use this template to find (as an example) all CallSites for the function strcpy? Thanks, Brice Lin

On Sep 13, 2008, at 1:07 PM, Matthijs Kooijman wrote: > Hi Dan, > >> Changing PromoteCastOfAllocation to not replace aggregate allocas >> with >> non-aggregate allocas if they have GEP users sounds reasonable to me. > This sounds reasonable indeed, but still a bit arbitrary. Haven't > figured out > anything better yet, though. > >> Finding the

Hi Eli, Mon Ping, > In ISO/IEC WG14 n1169 on the C extensions to support embedded > processors, any two address spaces must be disjoint, must be > equivalent, or must be nested. Ah, that standard is a lot clearer on this subject than the DSP-C one I read was. > As Eli indicated, the actual relationship is platform specific depending on > what makes the most sense for

Hi all, I just come across an IR instruction like this: %0 = getelementptr i32* getelementptr inbounds ([42 x i32]* @aaa, i32 0, i32 0), i32 %2 What does the part "i32* getelementptr inbounds ([42 x i32]* @aaa, i32 0, i32 0)" mean? As far as I could understand this is a GetElementPtrConstantExpr, isn't it? My question is: how can I instantiate a class that represents that

Hi all, > If I read the standard correctly, the properties of these address spaces can > be fully captured by defining the relationship between every pair of address > spaces (disjoint, identical, subset/superset). > > I think it would make sense to make these relationships backend/platform > specific, but for clang and the optimization passes to properly work with > address

Anton Korobeynikov wrote: > Hi, Artur > > >> I'm working on that backend now, so probably I'll send some more patches >> soon. I'd be grateful if you could give me some suggestions how to add >> some test for that backend to the test-suite. On Linux the output code >> could be run on Mono and compared with outputs for other backends but >>