[Bug middle-end/50060] intrinsics not folded by the middle-end

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50060

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-08-12 
16:26:00 UTC ---
... frexp also don't understand at the moment. I see a fold_builtin_frexp but
the following doesn't compile:

int r = 0;
constexpr double d = __builtin_frexp(1.0, &r);