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[Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
- From: "janis187 at us dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Aug 2003 18:09:07 -0000
- Subject: [Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
- References: <20030710211654.11496.Remigius.Mommsen@cern.ch>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
janis187 at us dot ibm dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at redhat dot com, jh at
| |suse dot cz
------- Additional Comments From janis187 at us dot ibm dot com 2003-08-05 18:09 -------
The regression in PR 11496 was introduced or exposed by this patch:
--- gcc/gcc/ChangeLog ---
Wed Jul 18 18:46:30 CEST 2001 Richard Henderson <rth@cygnus.com>
Jan Hubicka <jh@suse.cz>
* flow.c (redirect_edge_and_branch): Bail out on complex edges.
(try_optimize_cfg): Do not remove tail recursive labels before sibcall.
* jump.c (mark_jump_label): Do not forward branches.
The regression hunt took place on i686-pc-linux-gnu using a native
compiler (the bug isn't specific to powerpc) to compile the submitter's
test case with "-O2 -funroll-loops".