[Bug target/94042] [10 Regression] Bootstrap fails on ppc-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94042

--- Comment #20 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The return value of the first _Z11tsubst_exprP9tree_nodeS0_iS0_b.part.0 was
being copied into r8 and then copied back into r3 (return value), but not r0 is
used and that r0 is used for mtlr (moving back the return address).