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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/97940] [11 Regression] ICE: in extract_insn, at
 recog.c:2306 (error: impossible constraint in 'asm'; error: unrecognizable
 insn)
Date: Mon, 23 Nov 2020 15:02:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97940

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4
           Keywords|                            |error-recovery
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |vmakarov at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The test has
/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
so it isn't meant for other arches, uses x86 specific constraints.
So this is just an IRA error recovery ICE on random garbage code.=