[Bug tree-optimization/58483] missing optimization opportunity for const std::vector compared to std::array

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58483

Marc Glisse <glisse at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |glisse at gcc dot gnu.org

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Note that FRE already knows how to look through a memcpy, on trivial examples,
but here I assume the FRE pass is too early.

Also related: PR 58480 (an alternate way to remove the !=0 test).