[Bug tree-optimization/105368] [10/11/12 Regression] ICE: SIGSEGV in powi_lookup_cost (tree-ssa-math-opts.cc:1441) with -Ofast and __builtin_powf()

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105368

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
I think the issue might be in the:

> 1463    
> 1464      /* Ignore the reciprocal when calculating the cost.  */
> 1465      val = (n < 0) ? -n : n;

expression, for the case n == LONG_MIN, but I am not a language lawyer. (-n is
not representable in the (promoted) signed type)