undefined sym: __builtin_mul

[aaronryank]

Frequently when using the online demo, attempting to assemble the ELVM IR just prints:

undefined sym: __builtin_mul

It seems to occur anytime multiplication is needed. For example, the code below throws the error above:

int main(void) { printf("%d", 6 * 3); }

This may not just be the online demo but I suspect that it is.

[shinh]

I know this is a weird limitation, but you need #include <stdio.h>, which lets the compiler include https://github.com/shinh/elvm/blob/master/libc/_builtin.h .

Including this file by default would significantly slow down the compilation for minimal code. Maybe we should let compiler emit __builtin_xxx when xxx is used first time.

[aaronryank]

I agree, I think _builtin.h being included by default would simplify things a lot. I can't think of many useful programs that won't use multiplication in some form.