I recently installed LLVM 7, and tried to include the necessary files to start a project using llvm library in CLion. However, it complains that some files are not found. My CMakeLists.txt file h...

When using a C++ compiler with LLVM version 6.0.0, the following code bool isEven(int n) { bool ret = true; for (int i = 0; i < n; i ++) { ret = !ret; } return ret; } emits the LLVM IR ...

I am trying to retrieve the name of the pointer passed to a cudaMalloc call. CallInst *CUMallocCI = ... ; // CI of cudaMalloc call Value *Ptr = CUMallocCI->getOperand(0); if (AllocaInst *AI = d...

I can get llvm-ir from C code using Clang. I just want to work with LLVM-IR. For my compiler project. I need to convert LLVM-IR to target machine code or executable. But I can't convert LLVM-IR to...

Background (there may be a better way to do this): I am developing a Julia library in which I manually manage memory; I mmap a large block, and then mostly treat it like a stack: functions receive ...

I have created a function in LLVM IR. Now I want to create a return instruction return void. I saw the function Create ReturnInst::(LLVMContext &C, Value *retVal, BasicBlock *InsertAtEnd) But...

How do I run a non-legacy PassManager? I have tried doing the following but there is some exception thrown when trying to invalidate the analysis manager in the run function. Is there something els...

I would like to generate a fully linked LLVM bitcode file from Rust source code which could be executed by LLVM IR interpreters such as lli. I found solutions such as one from Reddit and another on...

I'm creating a statically compiled programming language, and I'm using LLVM as its backend. I want my language to trap/crash whenever integer overflow occurs. I'm aware of things like llvm.sadd.wi...

I am trying to write an LLVM backend for my custom processor that I have designed recently. I tried to follow the official tutorial at http://llvm.org/docs/WritingAnLLVMBackend.html But it ...

I'm a newbie in llvm, and I'm trying to find all the function call instructions in IR. My code is shown below: for (BasicBlock &BB : F) { for (Instruction &inst : BB) { errs() <&lt...

how to use LLVM UserOp1? I can't find any examples of this instruction.

Let's say I want manually turn code below to IR code: #include <stdio.h> int main() { int (*p)(const char *__s); // how to implement this? p = puts; // and this? p("Hello World!\n"); } ...

I'm writing a toy compiler and want my language support virtual methods, but I have no idea how to do it, it seems not as straight forward as other statements which can be easily turn into the IR c...

The operands for an llvm::User (e.g. instruction) are llvm::Values. After the mem2reg pass, variables are in SSA form, and their names as corresponding to the original source code are lost. Value:...

I generate ir by use 'clang -S -emit-llvm test.c'. int main(int argc, char **argv) { int* a=0; a=(int *)malloc(sizeof(int)); printf("hello world\n"); return 0; } and this is the ir: define ...

(This happened while doing the fix I found here: LLVM IR: expose variables to GDB?) I am trying to compile some code written in a custom programming language. It is compiled to LLVM IR, and then ...

I am trying to compile a LLVM IR file. However, when I try to compile it, I get this stack trace: warning: overriding the module target triple with x86_64-pc-linux-gnu [-Woverride-module] #0 0x000...

I am writing a custom programming language. I am generating LLVM IR as an intermediate (via LLVMlite), and I want to expose variables to GDB. This is an example of the generated IR: ; ModuleID =...

The LLVM IR doc discusses the IR in detail, much of which is clear. However, I get particularly confused with the Linkage Types. The linkage types apart from private, internal, external become quit...

I created a very simple LLVM IR code piece via the API. Inside the main block, I want to insert calls to functions that are available in the C standard library such as malloc, printf or some other ...

this is my first Stackoverflow question :-) My background: 2 years Python experience 2 months crystal-lang experience ( websites running with Amber framework ) 1 month into C, C++ , assembly ...

If I is of type llvm::Instruction, we can print out the same in human-readable form (textual representation) by errs() << I; I want the assign the exact same representation to a std::string ...

im working on a my own programming language. Im currently generating the code in LLVM IR. I got a question on nested If statement with phi. So lets say I have this in my language : if n < 0 th...

I have three questions: 1) What are the differences between Invoke and Call operations in IR codes of LLVM? 2) Why Call instruction is not considered as Terminator operation in BasicBlocks here? ...