[Bug target/106069] [12/13 Regression] wrong code with -O -fno-tree-forwprop -maltivec on ppc64le

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106069

--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I mean, if that patch is actually flawed, this is GCC 12 and latter; if the
problem is more generic (combine, probably simplify-rtx to be exact) it is
more widespread.