https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93745
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |amonakov at gcc dot gnu.org
--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
The store cannot be eliminated with GCC's memory model where stores through a
pointer can change dynamic type.
The extra load you mention can be optimized because if *p and d overlap,
attempt to load from a 'double' stored value via an 'int *' would have invoked
undefined behavior.
