[Bug rtl-optimization/55270] [4.8 Regression] ICE in get_loop_body, at cfgloop.c:823

[rguenther at suse dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55270

--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> 2013-01-29 09:01:23 UTC ---
On Mon, 28 Jan 2013, mpolacek at gcc dot gnu.org wrote:

> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55270
> 
> --- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-01-28 16:43:31 UTC ---
> Unfortunately this patch causes a few FAILs, e.g.:
> 
> /home/polacek/src/gcc/gcc/testsuite/gcc.c-torture/compile/20020604-1.c: In
> function ?foo?:
> /home/polacek/src/gcc/gcc/testsuite/gcc.c-torture/compile/20020604-1.c:15:1:
> internal compiler error: in calc_dfs_tree, at dominance.c:397
>  foo (unsigned int n, int x, int y, unsigned char *z)
>  ^
> 0x63c87b calc_dfs_tree
>     /home/polacek/src/gcc/gcc/dominance.c:397
> 0x63ca66 calculate_dominance_info(cdi_direction)
>     /home/polacek/src/gcc/gcc/dominance.c:658
> 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.
> 
> I can take a look (but probably only tomorrow).

I'll test an alternative patch.