[Bug target/110136] After optimization, the $r1 register will be broken when jumping to the jump table, resulting in a significant increase in the false prediction rate of branch prediction.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110136

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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          Component|lto                         |target

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>In the regrename passover optimization

I am trying to understand the issue.

5912         ldx.d   $r20,$r16,$r19
 5913         add.d   $r1,$r16,$r20
 5914         jr      $r1

Is the issue is jr does not like r1 register or some other kind of performance
issue?