[prev in list] [next in list] [prev in thread] [next in thread] 

List:       gcc-bugs
Subject:    [Bug target/115065] AVR clz is not always fast as can be
From:       "gjl at gcc dot gnu.org via Gcc-bugs" <gcc-bugs () gcc ! gnu ! org>
Date:       2024-05-18 10:24:19
Message-ID: bug-115065-4-Da7npptjI6 () http ! gcc ! gnu ! org/bugzilla/
[Download RAW message or body]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115065

--- Comment #1 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
IIUC, this is just about the timing of a branch, which in the general != 0 is
currently taken (takes 2 ticks), but it's better to only take it in the
non-common (= 0) case? So that the common case falls through and thus takes 1
cycle less.=
[prev in list] [next in list] [prev in thread] [next in thread] 

Configure | About | News | Add a list | Sponsored by KoreLogic