[Bug target/92061] build of gencondmd fails with clang-9.0 (trunk, gcc 9.2.1, probably other older versions of gcc as yet untested) with undefined symbols for ix86_binary_operator_ok and related.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92061

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Specificically:
/* This table lists each condition found in the machine description.
   Each condition is mapped to its truth value (0 or 1), or -1 if that
   cannot be calculated at compile time.
   If we don't have __builtin_constant_p, or it's not acceptable in array
   initializers, fall back to assuming that all conditions potentially
   vary at run time.  It works in 3.0.1 and later; 3.0 only when not
   optimizing.  */

#if GCC_VERSION >= 3001