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From: "mikpelinux at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109140] ICE (during RTL pass: internal compiler error:
 in extract_insn, at recog.cc:2791) when building qemu on
 sparc64-unknown-linux-gnu with -march=niagara4
Date: Wed, 15 Mar 2023 17:32:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109140

--- Comment #7 from Mikael Pettersson <mikpelinux at gmail dot com> ---
With -O2 -ftree-vectorize -mcpu=3Dniagara4 a bisect between 9.5.0 (good) and
10.4.0 (bad) found

6271dd984d7f920d4fb17ad37af6a1f8e6b796dc is the first bad commit
commit 6271dd984d7f920d4fb17ad37af6a1f8e6b796dc
Author: Wilco Dijkstra <wdijkstr@arm.com>
Date:   Wed Nov 20 16:29:23 2019 +0000

    PR85678: Change default to -fno-common

And sure enough, with -O2 -ftree-vectorize -fno-common -mcpu=3Dniagara4 gcc=
-9.5.0
also ICEs.=