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[Bug rtl-optimization/78116] [7 regression] Performance drop after r241173 on avx512 target
- From: "pthaugen 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 Oct 2016 16:53:15 +0000
- Subject: [Bug rtl-optimization/78116] [7 regression] Performance drop after r241173 on avx512 target
- Auto-submitted: auto-generated
- References: <bug-78116-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78116
--- Comment #4 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
(In reply to Yuri Rumyantsev from comment #2)
> WE also found out performance drop on another important benchmark with the
> same symptoms after r241170, namely loop marked with .L18 has +12 more fills
> from stack. The test-case will be attached.
I don't understand what "fills from stack" is, are you referring to register
spills?