[Bug tree-optimization/115825] [12/13/14 Regression] Loop unrolling increases code size with -Os

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115825

--- Comment #20 from Segher Boessenkool <segher at gcc dot gnu.org> ---
gcc.target/powerpc/darn-3.c

I'll quote the whole thing:

===
static int darn32(void) { return __builtin_darn_32(); }

int four(void)
{
        int sum = 0;
        int i;
        for (i = 0; i < 4; i++)
                sum += darn32();
        return sum;
}
===

Okay, two insns, there's an add insn as well.  But *not* unrolling this likely
makes bigger code already!