http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56490
davidxl <xinliangli at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |xinliangli at gmail dot com --- Comment #2 from davidxl <xinliangli at gmail dot com> 2013-03-01 22:45:48 UTC --- The function has a control flow that post-dom chain is as long as 103. Limiting the max post-dom walk length solve the problem.