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[Bug rtl-optimization/44838] [4.6 regression] RTL loop unrolling and scheduling cause FAIL: gcc.dg/pr39794.c
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jul 2010 08:51:04 -0000
- Subject: [Bug rtl-optimization/44838] [4.6 regression] RTL loop unrolling and scheduling cause FAIL: gcc.dg/pr39794.c
- References: <bug-44838-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #13 from rguenth at gcc dot gnu dot org 2010-07-07 08:51 -------
It's a scheduling issue (and thus an alias issue). -fno-schedule-insns2 fixes
the problem. We mis-schedule the unrolled part.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu dot
| |org
Component|middle-end |rtl-optimization
Keywords| |alias, wrong-code
Summary|[4.6 regression] FAIL: |[4.6 regression] RTL loop
|gcc.dg/pr39794.c |unrolling and scheduling
| |cause FAIL: gcc.dg/pr39794.c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44838