[Bug target/98849] [11 Regression] ICE in expand_shift_1, at expmed.c:2658 since g:7432f255b70811dafaf325d9403

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98849

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 50076
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50076&action=edit
gcc11-pr98849.patch

So like this then?  From quick skimming of iwmmxt.md, it does have the vector
by scalar shifts, but doesn't have vector by vector shifts, so it seems correct
to me to do what this patch does, plus if somebody cared about IWMMXT, it could
announce its shifts through the standard pattern names.