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[Bug rtl-optimization/43494] [4.4/4.5/4.6 Regression] Overlooked dependency causes wrong scheduling, wrong code
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Jul 2010 09:49:16 -0000
- Subject: [Bug rtl-optimization/43494] [4.4/4.5/4.6 Regression] Overlooked dependency causes wrong scheduling, wrong code
- References: <bug-43494-578@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #20 from steven at gcc dot gnu dot org 2010-07-21 09:49 -------
Since this bug only triggers if cselib is used, the bug affects schedule_ebbs
only. The other schedulers are !use_cselib schedulers.
(Even sel-sched apparently does not use cselib, that's surprising!)
OTOH, this bug can probably be triggered with -fsched2-use-superblocks on any
target.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43494