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Re: [patch] passes.c: Remove a cut-n-paste error.
gcc_assert (!delete_unreachable_blocks ());
but that didn't work. I guess somebody creates unreachable blocks
sometime between the tree optimizers and rest_of_handle_jump....
That may well be caused by the builtin optimizers or by some tricky
cases in the expander. Also note that rest_of_handle_jump is also run
at -O0; it may be well expected that there are some unreachable blocks
despite the small cfgcleanup pass executed at -O0.