[Bug rtl-optimization/78342] [7 Regression] ICE in rtl_verify_bb_insns, at cfgrtl.c:2657 (error: flow control insn inside a basic block)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78342

--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Segher Boessenkool from comment #3)
> This patch seems to work.  It is hard to be sure, this is very hard to
> trigger.

My setup allows me to trigger this kind of ICE with ease. Applying r242947 on
top of 7.0.0-alpha20161127 snapshot (r242902, according to the announcement)
indeed fixes the case reported in #c0. However I have (and can easily produce)
a number of snippets that, after applying this patch alone, either yield
PR77346 or "error: missing barrier after block 7 / internal compiler error:
verify_flow_info failed."

Do you want me to report the latter separately, or just file it here?