[Bug tree-optimization/87901] partial DSE of memset doesn't work for other kind of stores

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87901

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #5)
> +       case INTEGER_CST:
> +         if (integer_zerop (gimple_assign_rhs1 (stmt)))
> +           maybe_trim_constructor_store (ref, live, stmt, true);

This has a small bug, we need to check to see the the type has mode precision.
Otherwise:
exact_div (ref->size, BITS_PER_UNIT);

Will cause a ICE since size is not an exact multiply of BITS_PER_UNIT .