https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86538
--- Comment #2 from Steve Ellcey <sje at gcc dot gnu.org> --- While I agree that we want users to use the __sync and atomic primitives, it still seems like it would be useful in some cases to know if the LSE operations are available and if GCC is generating code for them. I.e. is TARGET_LSE set or not. I don't like the idea of hiding information (or making it hard to determine) just because it might be misused. I will probably create a patch for this and submit it to gcc-patches to see if there is any support for it.
