[Bug target/95535] Failure to optimize out cdqe after __bultin_ctz

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95535

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48676
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48676&action=edit
gcc11-pr95535.patch

Untested version of the PR91824 popcnt fix.