[Bug target/52911] [4.6/4.7/4.8 Regression] gcc 4.7.0 (ppc32 e500mc) when compile a c file, after a lot of time, gcc failed and internal compiler error occurs.

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52911

--- Comment #11 from Mikael Pettersson <mikpe at it dot uu.se> 2013-01-21 22:52:18 UTC ---
This ICE was fixed for 4.8 by Alan Modra's "PR53914, rs6000 constraints and
reload queries" fix in r189801.  The ICE described in
http://gcc.gnu.org/ml/gcc/2012-07/msg00142.html
and the linked-to Red Hat bugzilla entry looks exactly like this PR's ICE.

The patch is localized to the rs6000 backend, but it's quite big so I would not
be comfortable backporting it en masse to 4.7 branch.