[Bug tree-optimization/117033] GCC trunk emits larger code at -Os compared to -O2

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117033

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Davide Italiano from comment #6)
> I noticed you linked the LLVM bug I found. 
> As part of my search/analysis, I found out there are cases that sometimes
> clang gets but GCC doesn't (unsurprisingly, FWIW).
> 
> Here's a simple one.
> https://godbolt.org/z/fjjzf9xds

here is a slightly modified example which shows the opposite way, GCC figures
it at -Os but LLVM does not:
```
long patatino() {
    long x = 0;
    for (int i = 0; i < 5; ++i) {
        if (x < 10)
        while (x < 10) {
            x += 1;
        }
    }
    return x;
}
```