https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102842

--- Comment #9 from tt_1 <herrtimson at yahoo dot de> ---
So, I did a little bit of research. pr92807 has indeed been backported to the
gcc-10 branch and is included in the gcc-10.3.0 release - it touches
gcc/config/i386/i386.c and adds a testcase. 

There is another fixup on top of that, which is the real fix the here reported
ICE:
https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=74dc179a6da33cd00f6d4a93fbb97dc84f610126
or r11-209-g74dc179a6da33cd00f6d4a93fbb97dc84f610126 , to which you pointed me
as the most likely fix. But that fixup (commited by Vladimir Makarov) doesn't
have any bug number in the description. I wrote him an email, maybe he will
comment here later.

Hint: its not an option to upgrade to gcc-11.2.0, since the cross compile
bootstrap is fundamentally broken by missing fenv header in the gcc-11 branch.
Mixing up host and target compiler versions is nothing to desire, its a place
where there will be dragons.

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