[Bug rtl-optimization/79437] Redundant move instruction when getting sign bit of double on 32-bit architecture

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79437

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

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

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Even -mno-stv doesn't help here, the problem is that for the shift we don't
lower DImode operations here until too late (split2) and so EDX:EAX is used for
the 64-bit value.