[Bug tree-optimization/93540] Attributes pure and const not working with aggregate return types, even trivial ones

[trass3r at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93540

Trass3r <trass3r at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |trass3r at gmail dot com

--- Comment #2 from Trass3r <trass3r at gmail dot com> ---
I also ran into this when trying to optimize trivial but expensive getter
functions, e.g. returning shared_ptr.

struct Foo
{
    int operator+(const Foo& f);
    int a;
};

[[gnu::const]]
Foo foo(); // int instead of Foo works

auto testfunction()
{
    return foo() + foo(); // results in 2 calls
}