ClangJIT and OOP

[Pacco1217]

Hi, I'm actually doing my bachelor thesis about JIT compiler and I'm interested in using your work.
First of all. the simple example work but I have a little question : Is it possible to use clangJIT with OOP ? For example, having a member function jited. I'm trying with the simple following example :

#include <iostream>
 
class Test
{
private:
	int x;

public:
	Test(int x);
	Test();

	template<int val>
	int getResult();

};

Test::Test(int x) : x(x){}

Test::Test() : x(2) {}

template <int val>
[[clang::jit]] int Test::getResult(){
	return val * x;
}

template <int val>
[[clang::jit]] int simple_mul(int x){
	return x * val;
}

int main(){

	Test obj;

	std::cout << "result = " << obj.getResult<5>() << "\n";
	std::cout << "result = " << simple_mul<5>(10) << "\n";

}

With this code, the second output work (print result = 50)
but when calling obj.getResult<5>(), I have the following linker error : undefined reference to 'int Test::getResult<5>()'
Do you think it's a problem in my code ? Or OOP with ClangJIT is not a good idea ?

Thanks in advance for your answer

[hfinkel]

Do you think it's a problem in my code ? Or OOP with ClangJIT is not a good idea ?

It just seems like a bug. I'll look into it. Thanks for reporting!

[Pacco1217]

Hi,
I've been working to find a workaround for now and i've found something.

#include <stdio.h>

template <int val>
[[clang::jit]] int globalGetResult(int x){
	return val * x;
}
class Test
{
private:
	int x;
public:
	Test();
	
	int getResult(int val){
		return globalGetResult<val>(x);
	}
};

Test::Test() : x(2) {}

int main(int argc, char ** argv) {
    int result;
    Test obj;
    result = obj.getResult(argc);
    printf("%d\n", result);
    return 0;
}

This workaround compile and I get the expected result. I know it's a bit dirty but for now, users can use it this way.

Edit: Sorry for closing the issue, it was a mistake

[hfinkel]

Thanks. I've started working on this.

[hfinkel]

Should be fixed now. Please confirm.