[Bug tree-optimization/103195] [12 Regression] tfft2 text grows by 70% with -Ofast since r12-5113-gd70ef65692fced7a

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103195

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|needs-bisection             |
             Status|UNCONFIRMED                 |NEW
                 CC|                            |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|tfft2 text grows by 70%     |[12 Regression] tfft2 text
                   |with -Ofast between         |grows by 70% with -Ofast
                   |g:52fa771758635d9c53cddb911 |since
                   |6e5a66fae592230...a97fdde62 |r12-5113-gd70ef65692fced7a
                   |7e64202940112009d45d17f85e4 |
                   |cc61                        |
   Last reconfirmed|                            |2021-11-12

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> threader stuff would be my bet, but we need to bisect this (tfft2 is also
> quite small)

Bad bet ;) It's caused by r12-5113-gd70ef65692fced7a.