revert: backport: function.c (fixup_var_refs): Save volatile_ok and set to 1.

revert: backport: function.c (fixup_var_refs): Save volatile_ok and set to 1.

	Revert:
	2005-05-10  H.J. Lu  <hongjiu.lu@intel.com>
	Backport from mainline
	2004-02-12  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
	* function.c (fixup_var_refs): Save volatile_ok and set to 1.
	* expr.c (emit_block_move_via_movstr): Save and restore
	volatile_ok.
	2005-05-09  Grigory Tolstolytkin  <gtolstolytkin@ru.mvista.com>
	Backport from mainline
	2004-02-12  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
	* emit-rtl.c (set_mem_attributes_minus_bitpos): Don't kill previous
	MEM_VOLATILE in REF.

From-SVN: r99595