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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/100342] [10/11 Regression] wrong code with -O2
 -fno-dse -fno-forward-propagate -mno-sse2
Date: Wed, 05 May 2021 15:12:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100342

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 50761
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50761&action=3Dedit
gcc11-pr100342.patch

Untested fix.  But what do I know about regcprop?=