[Bug target/100028] [9/10/11 Regression] arm64 failure to generate bfxil

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100028

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 50571
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50571&action=edit
gcc11-pr100028.patch

Untested fix.