This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/13653] [3.3 regression] -O2 -funroll-loop miscompiles POOMA testcase
- From: "rguenth at tat dot physik dot uni-tuebingen dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 May 2004 10:01:40 -0000
- Subject: [Bug rtl-optimization/13653] [3.3 regression] -O2 -funroll-loop miscompiles POOMA testcase
- References: <20040112101346.13653.rguenth@tat.physik.uni-tuebingen.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2004-05-25 10:01 -------
Subject: Re: [3.3 regression] -O2 -funroll-loop
miscompiles POOMA testcase
On Mon, 24 May 2004, ebotcazou at gcc dot gnu dot org wrote:
>
> ------- Additional Comments From ebotcazou at gcc dot gnu dot org 2004-05-24 16:01 -------
> Try first to revert this one:
>
> 2004-04-24 Richard Henderson <rth@redhat.com>
>
> PR bootstrap/14671
> * alias.c (alias_invariant, alias_invariant_size): Mark GTY.
> (reg_known_value, reg_known_value_size): Likewise; make static.
> (reg_known_equiv_p): Make static.
> (clear_reg_alias_info): Update for new indexing.
> (get_reg_known_value, set_reg_known_value): New.
> (get_reg_known_equiv_p, set_reg_known_equiv_p): New.
> (canon_rtx): Use them.
> (init_alias_analysis): Likewise. Allocate reg_known_value with gc.
> Don't play queer offsetting games with reg_known_value and
> reg_known_equiv_p.
> (end_alias_analysis): Don't free reg_known_value.
> * rtl.h (get_reg_known_value, get_reg_known_equiv_p): Declare.
> * sched-deps.c (reg_known_equiv_p, reg_known_value): Remove.
> (deps_may_trap_p, sched_analyze_1, sched_analyze_2): Use the new
> functions instead.
Reverting the patch fixes the problems and testresults are then on-par
with gcc 3.4! Very nice.
Please revert the above change.
Richard.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13653