Re: [PATCH v2, middle-end]: Introduce memory_blockage named insn pattern

[David Edelsohn]

This patch has broken bootstrap on AIX and possibly powerpc64-linux.
Was this patch tested on any architecture other than x86?

/nasfarm/edelsohn/src/src/libgcc/emutls.c: In function '__emutls_get_address':
/nasfarm/edelsohn/src/src/libgcc/emutls.c:139:11: internal compiler
error: in invalid_void, at config/rs6000/rs6000.md:10804
   pointer offset = __atomic_load_n (&obj->loc.offset, __ATOMIC_ACQUIRE);
           ^~~~~~

Thanks, David