[Bug target/70322] STV doesn't optimize andn

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70322

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40214
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40214&action=edit
gcc7-pr70322.patch

Untested patch I'm playing with.