similar to: [LLVMdev] Reading Static Values

Hi, What I'm currently working on is a translation from LLVM IR to a register transfer list format used in VPO. If my understanding of ConstantExpr is correct, that they can be evaluated at compile-time, how can I simply have them be evaluated but have the code still remain in IR format? For example, in: store i32 1, i32* getelementptr [6 x i32]* @arr, i32 0, i32 0 the getelementptr

Hi, Sorry for bothering you guys again. I got problem when I am trying to recover the Global Variable Initial value. What I did is like the following ConstantArray *Cstr = dyn_cast<ConstantArray>(gI->getInitializer()); // the above instruction enable me to get the content of initial string of global variable, like char a[10] ="test global"; And then I make some change for

Thanks Chris, but the method you mentioned is not what I want. Maybe I didn't make it clear. As you said, /runtime/libprofile is runtime library for the following function. llvm_start_func_profiling llvm_start_block_profiling llvm_start_basic_block_tracing llvm_trace_basic_block And those above functions can be inserted into basic block etc for getting profile. However, those

Looking through this mailing list's archives, I've found that the most common fix attempted for removing phi instructions is to use the reg2mem pass. However I'm also finding that this does no guarantee the removal of all phi instructions. I want to write a pass to remove phi instructions without changing register/memory usage. Does this sort of translation of phi

Hi, Thanks so much at first. > Here are some observations: > > > for C level, > > > > char a[]="global string test"; > > for(i=0;i<strlen(a);i++){ > > a[i]= a[i]^RANDMON; > > } > > If you compile this C code, "global string test" will occur in the program > binary, so you have not obfuscated anything. You can

Hello, I am medical student, writing a meta-analysis on complication and reoperation rates after the five most common treatments of distal radius fractures. I have been busy with the statistics for months by my self, but find it quite hard since our classes were very basic. Now I want to compare the treatment modalities to see if there are significant differences. Using R I was able to

Thanks Tim, I'll try to solve my problem ASAP, if I cannot maybe I'll some other clarifications. Thanks again On Sat, Mar 9, 2019, 06:03 Tim Northover <t.p.northover at gmail.com> wrote: > Hi Alberto, > > On Sat, 9 Mar 2019 at 05:50, Alberto Barbaro via llvm-dev > <llvm-dev at lists.llvm.org> wrote: > > i8* getelementptr inbounds ([7 x i8], [7 x i8]*

hi Jay, Consult a local statistician. Statistics is not you think is (namely simple computations, R and probably plotting..). regards, vito Jay Zola <jayjay.1988 at hotmail.nl> ha scritto: > Hello, > > > I am medical student, writing a meta-analysis on complication and > reoperation rates after the five most common treatments of distal > radius fractures. I have

Hi Tim, I forgot to say that I try to do all this in the LLVM API, not IR. I read in a bc'ed program and try to edit it using the API. Alex Tim Northover wrote: >> But I can not succeed in using the getGetElementPtr result in >> constructing an initalizer for another global value (which expects a >> ConstantFP* and not a ConstantExpr*). > > The result of a

getInitializer returns the complete initializer of the global. My globals are complex nested structs, from which I want to extract e.g. one double datafield. Example: >From a struct Stuct having double,array(3xint),float fields, I could extract the second int value using the index sequence 0,1,1 with getGetElementPtr. This gives me a constantPointer, but I would need to get a constInt...

Hi I have IR Code like ... @path = private constant [6xi8] c"abcde\00" ... --- Code from Pass --- GlobalVariable * GVPath = .... // contains @path I want to convert "abcde" to StringRef. Can you help me with GlobalVariable API? GlobalVariable::getInitializer() --> Constant* // How to get exact value äbcde from here? ~mahesh -------------- next part --------------

Hi all, I'm fiddling around a bit with programmatically created GEP instructions, which is failing when using i64 for any indix, except the first. The reason behind this, is that StructureType::indexValid only accepts Value* that are constant ints of width 32. I can't really see why this limitation is here. SequentialType solves this slightly differently, it allows for both 32 and 64

Hi,all I have a Value* type named indexValue, and the type is i32. I think "indexValue" must hold a number which type is int. Now I want to use the exact number which pointed by indexValue , so I do like this: ConstantInt* CI = llvm::cast<llvm::ConstantInt>(indexValue); //This is wrong, so is dyn_cast. uint64_t index = indexValue->getZExtValue(); uint64_t size = index + 1; I

Is there are reason why ConstantInt::getRawValue method can't be moved one step into class hierarchy, into ConstantIntegral::getRawValue The reason I'd like this is that to handle both ConstantInt and ConstantBool, I need the following: if (ConstantInt* CI = dyn_cast<ConstantInt>(V)) { BuildMI(*MBB, IPt, NM::MOVE, 1, Reg).addImm(CI->getRawValue()); } if

Dear Vito, Thank you for your reply. I tried to contact the statistics departement numerous times, but did not receive any reply. That is why I started to look on the internet for help. Yours sincerely, Jay Verstuurd vanaf mijn iPhone > Op 26 jun. 2017 om 22:05 heeft Vito Michele Rosario Muggeo <vito.muggeo at unipa.it> het volgende geschreven: > > hi Jay, > Consult a local

Hi all, I just found that TargetData also contains a similar assert, and that I forgot a "return" in my previous patch. Here's an updated patch, which allows to use any integer to index a CompositeType. It seems this enables GEP to work with any integer value as well, I tested indexing a struct with a i16 an i64 (also through llc). This should still be adressed somewhere, unless we

Hi, I have three constants (B, C and V) and V = B + C. I want to find out if B + C wraps around. The way I'll do it is, assuming B and C are both positive, to check if V < B or C. For this I need the values of B, C and V. I tried using APInt as below. *** If (isa<Constant> (B) && isa<Constant> (C) && isa<Constant>(V)) { ConstantInt *CV =

Hey Duncan, Thanks! I figured out this piece of code finally: Value *gep = call->getArgOperand(0); if ( ConstantExpr *pCE = dyn_cast<ConstantExpr>(gep) ) { Value *firstop = pCE->getOperand(0); if (GlobalVariable *GV = dyn_cast<GlobalVariable>(firstop)){ Constant *v = GV->getInitializer(); if

On Wed, Dec 12, 2012 at 01:59:55PM -0800, Dan Gohman wrote: > The bug here isn't in clang's use of noalias or in BasicAliasAnalysis' > implementation of noalias; it's in the code that's optimizing the > icmp. Let's come back to this. The attached patch decouples InstSimplify from the alias analysis and provides the conservative logic for when pointers are not

On Wed, Dec 12, 2012 at 1:26 PM, Joerg Sonnenberger <joerg at britannica.bec.de> wrote: > On Wed, Dec 12, 2012 at 11:01:01AM -0800, Dan Gohman wrote: >> > Is that >> > assumption violated if I explicitly cast away const and pass the result >> > to a function with NoAlias argument? >> >> Not immediately, no. It means that you can't access the