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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/95649] [11 Regression] ICE during GIMPLE
 pass: cunroll since r11-1146-g1396fa5b91cfa0b3
Date: Tue, 16 Jun 2020 14:23:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95649

--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
I still don't understand why propagating one SSA_NAME for another is causing
headaches later though.=20

I don't see anything fundamentally wrong with your patch and it restores
previous behavior since singleton_p would only be true for a constant, so
consider it pre-approved.=