* cse.c (dump_class): New function.

	* cse.c (dump_class): New function.
	(invalidate_memory): Fix typo in comment.
	* function.c (temp_slot): Add an alias set field.
	(assign_stack_temp): Only reuse slots if they will have the
	same alias set as before.
	(combine_temp_slots): Don't combine if -fstrict-aliasing;
	that's unsafe.
	* rtl.c (copy_rtx): Copy all the flags (in particular,
	MEM_SCALAR_P).

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@25372 138bc75d-0d04-0410-961f-82ee72b054a4