On 2012.09.28 at 11:21 -0400, Vladimir Makarov wrote:
> On 12-09-28 4:21 AM, Steven Bosscher wrote:
> > On Fri, Sep 28, 2012 at 12:56 AM, Vladimir Makarov <vmaka...@redhat.com>
> > wrote:
> >> Any comments and proposals are appreciated. Even if GCC community
> >> decides that it is too late to submit it to gcc4.8, the earlier reviews
> >> are always useful.
> > I would like to see some benchmark numbers, both for code quality and
> > compile time impact for the most notorious compile time hog PRs for
> > large routines where IRA performs poorly (e.g. PR54146, PR26854).
> >
> >
> I should look at this, Steven. Unfortunately, the compiler @ trunk
> (without my patch) crashes on PR54156:
>
> ../../../trunk2/slow.cc: In function ‘void check_() [with NT =
> CGAL::Gmpfi; int s = 3]’:
> ../../../trunk2/slow.cc:95489:6: internal compiler error: Segmentation fault
> void check_(){
> ^
> 0x888adf crash_signal
> /home/vmakarov/build1/trunk/gcc/gcc/toplev.c:335
> 0x8f4718 gimple_code
> /home/vmakarov/build1/trunk/gcc/gcc/gimple.h:1126
> 0x8f4718 gimple_nop_p
> /home/vmakarov/build1/trunk/gcc/gcc/gimple.h:4851
> 0x8f4718 walk_aliased_vdefs_1
> /home/vmakarov/build1/trunk/gcc/gcc/tree-ssa-alias.c:2204
> 0x8f50ed walk_aliased_vdefs(ao_ref_s*, tree_node*, bool (*)(ao_ref_s*,
> tree_node*, void*), void*, bitmap_head_def**)
> /home/vmakarov/build1/trunk/gcc/gcc/tree-ssa-alias.c:2240
> 0x9018b5 propagate_necessity
> /home/vmakarov/build1/trunk/gcc/gcc/tree-ssa-dce.c:909
> 0x9027b3 perform_tree_ssa_dce
> /home/vmakarov/build1/trunk/gcc/gcc/tree-ssa-dce.c:1584
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <http://gcc.gnu.org/bugs.html> for instructions.
See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54735
--
Markus
