Re: transpiling to low level C

On 12/15/2024 2:49 AM, Thiago Adams wrote:

Em 12/15/2024 1:39 AM, Chris M. Thomasson escreveu:

On 12/14/2024 7:05 PM, Thiago Adams wrote:

>
I am working on a C backend that generates simple C code.
>
You can test it here:
http://thradams.com/cake/playground.html

>
[...]
>
Wrt to C11, it is missing <stdatomic.h>:
________________________
#include <stdio.h>
#include <stdatomic.h>
>
struct ct_bar
{
     int a;
     int b;
     atomic_int m_atomic;
};
>
struct ct_foo
{
     char* a;
     struct ct_bar bar;
};
>
int main()
{
     struct ct_foo foo = { "Hello", { 1, 2, 0 } };
>
     atomic_exchange(&foo.bar.m_atomic, 42);
>
     printf("%s\n%d\n%d\n%d\n",
         foo.a, foo.bar.a, foo.bar.b, foo.bar.m_atomic);
>
     return 0;
}
________________________
>
>

 Yes this conversion is not implemented yet.
 Is
atomic_exchange(&foo.bar.m_atomic, 42);
 The generated code for
foo.bar.m_atomic =  42;
?

Yes. atomic_exchange is an atomic RMW. Iirc, it defaults to seq_cst memory_order. atomic_exchange_explicit allows us to define a different memory_order.

I may look this at future.

Cool. :^)