[Bug target/105930] [12/13 Regression] Excessive stack spill generation on 32-bit x86

jakub at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Mon Jun 13 09:29:07 GMT 2022


Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |uros at gcc dot gnu.org

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Confirmed it is r12-7502-g8ea4a34bd0b0a462 on our bisect seed.
Perhaps for !TARGET_STV || !TARGET_SSE2 we could keep the optabs, but split
right away during expansion?
Anyway, I think we need to understand what makes it spill that much more, and
unfortunately the testcase is too large to find that out easily, I think we
should investigate commenting out some rounds.

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