[Bug rtl-optimization/46793] -fschedule-insns causes ICE in compiling zlib/trees.c

[joseph at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46793

--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2010-12-03 23:04:52 UTC ---
We should disable this option (with a warning) in 
ix86_option_override_internal if we don't think it can work reliably, 
rather than leaving it to ICE.