* config/gofast.h (GOFAST_RENAME_LIBCALLS): Set gt and ge as
NULL_RTX.  Set all HFmode operations as NULL_RTX.
* optabs.c (prepare_float_lib_cmp) <GT, GE, LT, LE>: If libfunc is
NULL_RTX, try reversing the comparison and the operands.

From-SVN: r50422