[Bug tree-optimization/113467] [14 regression] libgcrypt-1.10.3 is miscompiled

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113467

--- Comment #13 from Sam James <sjames at gcc dot gnu.org> ---
if I just cast RHS to basic_block (doubt that's the right thing), then
libgcrypt tests pass!

this also fixes mpfr + gmp tests, thank you!