[Bug inline-asm/85546] GCC assumes volatile asm block returns same value in loop

[be11f157cd19c4a2ba1e9c70a38b1a74 at protonmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85546

--- Comment #1 from be11f157cd19c4a2ba1e9c70a38b1a74 at protonmail dot com ---
The code sample is compiled with

gcc -ffreestanding -nostdlib -nostartfiles main.c