[LLVMdev] Easy way to get value given by user

Byungchan An
2014-04-18T18:14:05Z

Hello. I'm a newbie for LLVM.
I have a question on getting input value given by the user.
What I want to get is main's argv's last argument and convert it as
integer
value.

I solved this by writing extra function and combining the original program.
To make it work, I also linked with llvm-link command.

The following is the function I linked.

int countconverter(int argc, char** ip) {
    printf("----------Input converter----------\n");
    printf("The input to this program is argc: %d -->
argv[argc-1]%s\n",argc, ip[argc-1]);
    int result = atoi(ip[argc-1]);
    printf("Converted integer is %d\n", result);
    return result;
}

So, whenever I need the value given by the user, I call the function and
store the result in the stack. However, I think it is inefficient.

I believe there is a way to get a value when doing pass in main function
and get the last argument and convert it to integer value. By doing this, I
think I can remove the need for calling function which is good. Can anyone
help me to figure out this problem?

Thanks.
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