[Bug rtl-optimization/106210] New: missing shrink wrap for simple case

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106210

            Bug ID: 106210
           Summary: missing shrink wrap for simple case
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64-*-* x86_64-*-*

Take:
```
int f(int);

int advance(int dz)
{
    int dz1;
    if (dz > 0)
        return (dz + dz) * dz;
    else
        return dz * f(dz);
}
```
I would have expected this to be shrink wrapped but it is not.