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[Bug target/49057] scheduling difference of subs cause 80% performance difference
- From: "egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 27 Jul 2017 01:42:45 +0000
- Subject: [Bug target/49057] scheduling difference of subs cause 80% performance difference
- Auto-submitted: auto-generated
- References: <bug-49057-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49057
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
CC| |egallager at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Richard Earnshaw from comment #1)
> You haven't said what CPU this is for, what options you used when compiling,
> and you haven't provided a complete testcase.
>
> Are you *absolutely* sure this is the only difference? because I find that
> hard to believe. More likely is that the loop has a different alignment, or
> there is some other, secondary, issue that you've exposed.
Reporter never replied; closing