[Bug middle-end/46212] Segfault in reg_nonzero_bits_for_combine

[rmansfield at qnx dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46212

--- Comment #1 from Ryan Mansfield <rmansfield at qnx dot com> 2010-10-28 
17:37:25 UTC ---
Working on reducing the testcase. I originally encountered the ICE as:

internal compiler error: vector VEC(reg_stat_type,base) index domain error, in
reg_nonzero_bits_for_combine at combine.c:9385

but as I reduce the test case becomes a segfault.