similar to: Check if getElementPtr Operand

Thanks Ryan, I'm able to retrieved the type using the following code: Type *type=getElementPtrInst->getSourceElementType(); On Fri, Aug 12, 2016 at 7:00 PM, Ryan Taylor <ryta1203 at gmail.com> wrote: > Take a look at visitGetElementPtrInst in InstructionCombining.cpp for some > examples about how to iterate over GEP and check for type. > >

Hello LLVM, I am a beginner in LLVM My Goal is to initialize array element with random values. llvm::Type *i32_type = llvm::IntegerType::getInt32Ty(allocaInst->getContext()); llvm::Value *value = llvm::ConstantInt::get(i32_type, numberOfElement); args.push_back(getElementPtrInst->getPointerOperand()); args.push_back(value); callInst =

Hi all, I have the following C code: #include<stdio.h> int main(int argc, char *argv[]) { printf("%s\n", argv[0]); return argc; } that generates the following IR for the main function: ; Function Attrs: noinline nounwind optnone uwtable define i32 @main(i32, i8**) #0 { %3 = alloca i32, align 4 %4 = alloca i32, align 4 %5 = alloca i8**, align 8 store i32 0, i32*

Hi Bernard, On 9 January 2018 at 07:08, Bernard Nongpoh via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Tried the above code but no luck .. I'm afraid there's not enough context here to answer the question. The code you posted looks like it could work, but a lot would depend on the definitions you omitted: getElementPtrInst especially, though a dump of the whole Module as it

Hi, All good points and jokes in your email :) My final goal is the get the value of %8 at runtime. So considering the program is called argv I would like to execute something like ./argv 22 and get the value of argv[0]. Is it possible? So far I have the address where the parameter at position 0 in store but I'd like to read the value and print it. I hope it is clear now Thanks again On

On Nov 4, 2019, at 4:00 PM, James Molloy via llvm-dev <llvm-dev at lists.llvm.org> wrote: > We'd be keen to help out what the community decides to do here. I personally feel it's reasonable that: > - LangRef/DataLayout is updated with semantically coherent changes. > - The midend optimizer is updated by someone who cares about those changes and tests are added that use

On Wed, 10 May 2006, Nick Lewycky wrote: >> Then just run the SCCP pass, and check to see if any operands satisfy >> the predicate "isa<UndefValue>(V)". LLVM explicitly represents >> undefined values. > > I have a case where it doesn't, but perhaps the SCCP pass isn't to blame: > > extern void write_char(int); > > const char foo[4] =

Chris Lattner wrote: > On Tue, 9 May 2006, Nick Lewycky wrote: > >>> You could do that, but SCCPSolver isn't really useful to mainline LLVM >>> for anything other than SCCP and IPSCCP, so we don't need it in a public >>> header. Out of curiosity, what are you looking to use the latice values >>> for? Why not just run SCCP and then look at the

hie Im trying to calculate the power of the logrank test for different values of rho .I was just wandering whether the following programme would do it. any suggestions are welcome s=50 number=1 count1=0;count2=0;count3=0;count4=0;count5=0;count6=0;count7=0;count7=0; count8=0;count9=0 while(s!=0){ n=20 n1=n/2

my program given below can some one make it presentable. I trying to simulate survival data and calculate the power. I think i could have done better. s=10 number=0 count1=0;count2=0;count3=0;count4=0;count5=0;count6=0;count7=0;count8=0; count9=0; count11=0;count22=0;count33=0;count44=0;count55=0;count66=0;count77=0; count88=0;count99=0; while(s!=0){ n=100 n1=n/2 n2=n/4

With reference to the previous query, I think, i miscalculated the offset, just recalculating. 1. without instruction combining coupling member variable, is at:   %struct._FRAME_DATA* %2, i32 0, i32 5   where "%2" is defined as:   %arrayidx3 = getelementptr inbounds i16* %Data, i32 1024, !dbg !446   %2 = bitcast i16* %arrayidx3 to %struct._FRAME_DATA*, !dbg !446 i.e. at 5 offset in

Chris Lattner wrote: > On Wed, 10 May 2006, Nick Lewycky wrote: > >>> Then just run the SCCP pass, and check to see if any operands satisfy >>> the predicate "isa<UndefValue>(V)". LLVM explicitly represents >>> undefined values. >> >> >> I have a case where it doesn't, but perhaps the SCCP pass isn't to blame: >>

Hi All,   I have been having this issue, when I am enable Instruction Combining pass, for an application. I have read similar post ealier, http://old.nabble.com/Instruction-Combining-Pass-*Breaking*-Struct-Reads--td24253572.html With reference to the above case, my target data layout is defined as: DataLayout("e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-a:32:32") Thus I don't see

Hi All,   Further exploring the problem I could find that, there is a address offset calculation problem, with the GEP bitcast handling code in instruction combining. Below is table which shows address offset calculation for the struct elements (described earlier).   Type Variable Actual Size(in bytes) pass fail llvm2.9 Address(pass) Size-pass (in bytes) Address (fail) Size -fail (in bytes) with

Hi all, At the dev meeting I promised to update everyone on where my work with opaque pointers is right now. It's taken me a while, but at least it's the same year! Current Status ============== I've put two branches up at https://github.com/TNorthover/llvm-project: "opaque-ptr" which has most of the real work so far; and "opaque-ptr-always" that additionally has

I’ve been debugging SAFECode source code files, and line 170 in ArrayBoundCheckLocal.cpp has been causing the following compilation error: In file included from /Users/peterfinn/Desktop/llvm_trunk_2/projects/safecode/lib/ArrayBoundChecks/ArrayBoundCheckLocal.cpp:18: In file included from