https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110068
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
here is another one:
```
unsigned
f5 (unsigned x)
{
bool t = x >= 1U<<(sizeof(x)*8-1);
if (!t)
;
else
x = 1U<<(sizeof(x)*8-1);
return x;
}
```
this time LLVM does not detect it either.
easy way to see that out is by using riscv and -march=rv32gc_zba_zbb_zbc_zbs.
You should get for all 5 functions:
li a5,-2147483648
minu a0,a0,a5
ret
Or:
lui a1, 524288
minu a0, a0, a1
ret
Both are execute the same in the end.
