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[Bug target/48227] "rep ret" generated for -march=core2
- From: "zuxy.meng at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 6 Apr 2011 13:42:29 +0000
- Subject: [Bug target/48227] "rep ret" generated for -march=core2
- Auto-submitted: auto-generated
- References: <bug-48227-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48227
--- Comment #3 from Zuxy <zuxy.meng at gmail dot com> 2011-04-06 13:42:21 UTC ---
(In reply to comment #1)
> A good question is does it make a difference in actual performance numbers, it
> might still make a positive difference. Until someone tries it out and sees
> the difference in performance, I am going to say we should keep it.
Actually GCC since 4.6 has stopped generating 'rep ret' for all Intel CPUs.