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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/100009] [9 Regression] -march=native doesn't work on
 tigerlake
Date: Mon, 12 Apr 2021 08:11:01 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100009

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
   Target Milestone|---                         |9.4
            Summary|[9 Regression]              |[9 Regression]
                   |-march=3Dnative doesn't       |-march=3Dnative doesn't =
work
                   |recognize tigerlake         |on tigerlake

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looking at the backport it looks like -march=3Dnative on a tigerlake system
will expand to -march=3Dtigerlake but that's not recognized later since the
required support is missing.=