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[Bug ipa/65076] [5 Regression] 16% tramp3d-v4.cpp compile time regression
- From: "trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 31 Mar 2015 13:03:35 +0000
- Subject: [Bug ipa/65076] [5 Regression] 16% tramp3d-v4.cpp compile time regression
- Auto-submitted: auto-generated
- References: <bug-65076-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65076
--- Comment #32 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #31)
> No negative effects seen. Update on the regression? P3->P1 before
> willfully downgrading later...
It depends on the target machine. On amdfam10 it is still 12%,
on sandybridge it is less than 10%.
But tramp3d-v4.cpp compiled with gcc-5 runs 3.5% faster thanks to -ipa-icf.