--- Comment #2 from Matthias Schiffer <> ---
The problem seems to be that the gp init sequence

        li      $2,%hi(_gp_disp)
        addiu   $3,$pc,%lo(_gp_disp)
        sll     $2,16
        addu    $2,$3

is generated very late and does not appear in the RTL in any way, so optimizing
passes are not aware of the $3 (and possibly $2?) clobber. I don't know enough
about GCC internals for further analysis.

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