[gcc(refs/users/meissner/heads/work182-dmf)] RFC2677-Add xvrlw support.

https://gcc.gnu.org/g:cac1d9d66ab682d06523c462e2cb67d50e6958c9 commit cac1d9d66ab682d06523c462e2cb67d50e6958c9 Author: Michael Meissner Date: Tue Oct 22 16:25:54 2024 -0400 RFC2677-Add xvrlw support. 2024-10-22 Michael Meissner gcc/ * config/rs6000/alt

[gcc(refs/users/meissner/heads/work182-dmf)] RFC2677-Add xvrlw support.

https://gcc.gnu.org/g:87e19d52d51d7b1f8bd2242a1d175cc5497b8657 commit 87e19d52d51d7b1f8bd2242a1d175cc5497b8657 Author: Michael Meissner Date: Tue Oct 22 16:25:54 2024 -0400 RFC2677-Add xvrlw support. 2024-10-22 Michael Meissner gcc/ * config/rs6000/alt