[Bug tree-optimization/106322] [12 Regression] tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working) since r12-2404-ga1d27560770818c5

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Aug 24 06:51:34 GMT 2022


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106322

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
      Known to work|                            |12.2.1
             Status|ASSIGNED                    |RESOLVED
      Known to fail|                            |12.2.0

--- Comment #50 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Kewen Lin from comment #49)
> Hi Richi,
> 
> One thing I'm not sure about is that if we want to backport this to gcc-11
> and gcc-10? Although the failure got exposed by .MULH pattern recog which is
> only in gcc-12, IMHO the underlying issue exists in gcc-10 and gcc-11.

It's enough to backport to 12.


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