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[Bug middle-end/50074] [4.7 Regression] gcc.dg/sibcall-6.c execution test on x86_64-apple-darwin10
- From: "kirill.yukhin at intel dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 16 Aug 2011 08:48:21 +0000
- Subject: [Bug middle-end/50074] [4.7 Regression] gcc.dg/sibcall-6.c execution test on x86_64-apple-darwin10
- Auto-submitted: auto-generated
- References: <bug-50074-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50074
--- Comment #8 from Yukhin Kirill <kirill.yukhin at intel dot com> 2011-08-16 08:48:21 UTC ---
Hi,
I agree, this is a performance regression. Fix to tail-call optimization made
it very conservative. By using some additional tweaks, we may relax it.
However, my fix cured a stability problem (see, 49519 for details).