ia64.c (got_symbolic_operand): Do require a symbol+offset operand to have its offset be zero mod 0x3fff when...

	* config/ia64/ia64.c (got_symbolic_operand): Do require a
	symbol+offset operand to have its offset be zero mod 0x3fff
	when GOT entries are in use.  Clarify logic in SYMBOL_REF
	case.  Clarify comments.
	(ia64_expand_load_address): Split a symbol+offset load when
	the offset is nonzero mod 0x3fff, not 0x1fff.
testsuite:
	* gcc.dg/ia64-got-1.c: New test case.

From-SVN: r85426