https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112868
--- Comment #2 from David Edelsohn <dje at gcc dot gnu.org> --- Narrowing the ISA dialect range accepted by the assembler is good in theory to catch problems. We need to ensure that this doesn't break a lot of existing code and make POWER more tedious. Most people want to download a pre-built package. If someone downloads source code, they want it to configure, build and run without problems. While this change will ensure that new packages are more strictly conformant and may not cause problems with new Linux distro releases, it could prevent older packages from building with newer releases of GCC.
