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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/99101] optimization bug with -ffinite-loops
Date: Thu, 25 Feb 2021 10:18:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99101

--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 50253
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50253&action=3Dedit
patch to streamline connect_infinite_loops_to_exit

I'm considering this patch to make connect_infinite_loops_to_exit first con=
nect
noreturn blocks and only then process remaining unreachable blocks.  For the
testcase this avoids ending up with two fake edges to exit but it also means
connect_inifinite_loops_to_exit no longer fixes the bug.

I guess the function is then badly named (it was before) and it should inst=
ead
be named add_fake_exit_edges or so, or
connect_backwards_unreachable_blocks_to_exit.=