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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/105012] [12 Regression] wrf from SPECCPU2017 ICEs during
 LTO linking
Date: Tue, 22 Mar 2022 09:36:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105012

Martin Li=C5=A1ka <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-03-22
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
I can reproduce that on x86_64-linux-gnu and I'm trying to reduce that.

> Sorry for the lack of a small reproducer, still need to learn how to redu=
ce
> LTO cases properly..

You can do that in the following steps:

1) reduce the number of objects needed on the linker command line - you can=
 put
them to FILES.txt and then use cvise-delta to find a minimal set of files
needed; sometimes one needs to use -shared -fPIC in order to prevent missing
symbols linker errors
2) create pre-processed files for the culprit objects and then run gcc *.i
-flto ... and bisect all files at once with cvise=