[Bug target/84907] [8 Regression] ppc64le gromacs miscompilation since r256656

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84907

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've tried
return { *reinterpret_cast <const V __attribute__((aligned
(__alignof__(float))))*>(m) };
but that doesn't work either.
The difference between r256653 and r256656 is e.g. in loadUWrapper:
-       lxvd2x 0,0,3
+       lvx 0,0,3
        addi 10,1,-16
        li 9,32
-       xxpermdi 0,0,0,2
-       xxpermdi 0,0,0,2
+       xxpermdi 0,32,32,2
        stxvd2x 0,0,10
        addi 10,1,-48
-       lxvd2x 34,10,9
-       xxpermdi 34,34,34,2
+       lvx 2,10,9