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[Bug middle-end/70773] Profiled sudoku solver slower due to lack of sdiv/udiv
- From: "tulipawn at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 21 Apr 2017 20:02:25 +0000
- Subject: [Bug middle-end/70773] Profiled sudoku solver slower due to lack of sdiv/udiv
- Auto-submitted: auto-generated
- References: <bug-70773-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70773
--- Comment #18 from PeteVine <tulipawn at gmail dot com> ---
> Well that sounds like the same issue.
> Note -fprofile-generate simple inserts counters in the generated code. In fact the generated code is practically identical between Cortex-A5 and Cortex-A7.
As long as the gcda file is not present, -fprofile-use yields an equally good
binary (obviously!), so clearly it's about the profile data somehow. If you
have any ideas or debugging suggestions, go ahead, I'll gladly test them.