[Bug middle-end/109907] Missed optimization for bit extraction (uses shift instead of single bit-test)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109907

--- Comment #12 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
...my bad, I tried "extzv<mode>", which didn't work out as expected.

So we have shifts : bit-extract = 3 : 2.

Is it worth trying to write combine patterns to catch this?  Or will there be
better lowering for the remaining caases?