[Bug middle-end/29335] New: transcendental functions with constant arguments should be resolved at compile-time

["ghazi at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

We should use GMP/MPFR from inside builtins.c to resolve things like e.g.
cos(0.12345) at compile-time.

Need to figure out:

1.  Whether a certain minimum version of GMP/MPFR is required to avoid known
bugs, etc.

2.  Whether we should include GMP/MPFR in the svn archive like we do for intl
and zlib.

3.  Whether GMP/MPFR works on all the platforms/configurations that GCC
supports.  Are we ready to require a GMP/MPFR port for every port of GCC?

4.  If we don't do #2 and there is no system GMP/MPFR or the system lib is too
old, or if we trip over #3 and can't have GMP/MPFR, then what?  Do we require
the user to go get/port it, or silently eliminate this optimization during the
build process?


-- 
           Summary: transcendental functions with constant arguments should
                    be resolved at compile-time
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29335