[Bug rtl-optimization/51014] [4.7 Regression] ICE: in apply_opt_in_copies, at loop-unroll.c:2283 with -O2 -g -funroll-loops

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51014

--- Comment #5 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-12-01 
15:31:37 UTC ---
(In reply to comment #4)
> Created attachment 25939 [details]
> gcc47-pr51014.patch
> 
> Untested fix.

This fix solved the problem with the reduced testcase on x86_64-apple-darwin11
without regressions...

http://gcc.gnu.org/ml/gcc-testresults/2011-11/msg02982.html

Is there a problem on other targets preventing the commit?