[Bug d/101273] New: d: missed RVO optimization with non-pod structs

[ibuclaw at gdcproject dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101273

            Bug ID: 101273
           Summary: d: missed RVO optimization with non-pod structs
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: d
          Assignee: ibuclaw at gdcproject dot org
          Reporter: ibuclaw at gdcproject dot org
  Target Milestone: ---

It looks like fixing PR d/100882 introduced a small regression:
---
struct S
{
    int x;
    S *impl;
    this(int x)
    {
        this.x = x;
        this.impl = &this;
    }
    ~this() { }
}

S makeS()
{
    return S(42);
}

S nrvo()
{
    S ret = S(2);
    return ret; 
}

S rvo()
{
    return makeS(); 
}

void main()
{
    auto a1 = nrvo();
    assert(&a1 is a1.impl);
    auto b1 = rvo();
    assert(&b1 is b1.impl);
    return;
}