https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61538
--- Comment #17 from Joshua Kinard <kumba at gentoo dot org> --- (In reply to Joshua Kinard from comment #16) > In 'all-stage2-gcc'. That's right around the commit you're referencing, so > I went ahead and reversed these four commits: > > 1. 39a8c5eaded1e5771a941c56a49ca0a5e9c5eca0 * config/mips/mips.c > (mips_emit_pre_atomic_barrier_p,) > 2. 974f0a74e2116143b88d8cea8e1dd5a9c18ef96c * config/mips/constraints.md > (ZR): New constraint. > 3. 0f8e46b16a53c02d7255dcd6b6e9b5bc7f8ec953 * config/mips/mips.c > (mips_process_sync_loop): Emit cmp result only if > 4. 30c3c4427521f96fb58b6e1debb86da4f113f06f * emit-rtl.c > (need_atomic_barrier_p): New function. Already mentioned to Andrew on IRC, but reversing these four commits solves the problem, but I am still not sure why it affects R1x000 CPUs. I can upload the static binaries of 'sln' for someone to look at if they'd like.
