* cgraph.c (cgraph_node): Maintain master clones.
(cgraph_remove_node): Likewise.
(availability_names): New static variable.
(dump_cgraph_node): Dump availability.
(dump_cgraph_varpool_node): Likewise.
(cgraph_is_master_clone, cgraph_master_clone,
cgraph_function_body_availability,
cgraph_variable_initializer_availability): New functions.
* cgraph.h (availability): New enum.
(struct cgraph_node): Add master_clone.
(cgraph_is_master_clone, cgraph_master_clone,
cgraph_function_body_availability,
cgraph_variable_initializer_availability): Declare.
* cgraphunit.c (cgraph_expand_function): Setcgraph_function_flags_ready.
(cgraph_remove_unreachable_nodes): Remove unreachable nodes.
* ipa-inline.c (cgraph_decide_inlining): Do not call
cgraph_remove_unreachable_nodes.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100507 138bc75d-0d04-0410-961f-82ee72b054a4