[Bug target/109585] Carla/sord miscompiled with -O2 on ARM64 (inlining issue)

["hector at marcansoft dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109585

--- Comment #4 from Hector Martin <hector at marcansoft dot com> ---
This whole codebase is complex, and the problem is in btree code which is hard
to simplify down. Best I can do right now is this. First grab the lv2.tar.gz
attachment and extract it into /tmp. Then:

$ git clone https://github.com/falkTX/Carla
$ cd Carla && make -C source/modules/lilv
$ cat > test.c << EOF
#include "lilv/lilv.h"

int main(int argc, char **argv)
{
    LilvWorld* world = lilv_world_new();

    lilv_world_load_all(world, "/tmp/lv2");
}
EOF
$ gcc -I source/includes/ -I source/modules/lilv/lilv-0.24.0/ -o test test.c
./build/modules/Release/lilv.a -lm
$ ./test

Compiling with -fno-schedule-insns -fno-schedule-insns2 seems to work properly.