https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69489
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-01-26
Blocks| |53947
Summary|missed vectorization for |missed vectorization for
|boolean loop |boolean loop, missed
| |if-conversion
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, so the trick here is to see that v[i] is always loaded (and thus it may
not be NULL or otherwise trapping) because either u[i] or !u[i] will be true.
This is a missed if-conversion opportunity.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
