[Bug middle-end/102997] [12 Regression] 45% 454.calculix regression with LTO+PGO -march=native -Ofast between ce4d1f632ff3f680550d3b186b60176022f41190 and 6fca1761a16c68740f875fc487b98b6bde8e9be7 on Zen

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102997

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |12.0
                 CC|                            |rguenth at gcc dot gnu.org
             Target|                            |x86_64-*-*
           Keywords|                            |missed-optimization,
                   |                            |needs-bisection
            Summary|45% calculix regression     |[12 Regression] 45%
                   |with LTO+PGO -march=native  |454.calculix regression
                   |-Ofast between              |with LTO+PGO -march=native
                   |ce4d1f632ff3f680550d3b186b6 |-Ofast between
                   |0176022f41190 and           |ce4d1f632ff3f680550d3b186b6
                   |6fca1761a16c68740f875fc487b |0176022f41190 and
                   |98b6bde8e9be7 on Zen        |6fca1761a16c68740f875fc487b
                   |                            |98b6bde8e9be7 on Zen

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not seen on Haswell (but w/o PGO).  Is this PGO specific?  There's another
large jump visible end of 2019.