[Bug target/71191] aarch64 and others: __atomic_load;arithmetic;__atomic_compare_exchange loops should be able to generate better code with LL/SC-type constructs than a CAS loop

[dhowells at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71191

--- Comment #3 from dhowells at redhat dot com <dhowells at redhat dot com> ---
Created attachment 38522
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38522&action=edit
atomic_add_unless() test code

Here's a .c file containing the C code I referenced.