[LTO][PATCH] Move lto-symtab.c out of lto and remove input_cgraph lang-hook.

["=?big5?b?RG91ZyBLd2FuICjD9q62vHcp?=" <dougkwan at google dot com>]

Hi,

    This patch move the file lto-symtab.c out of the lto FE directory.
 It also move the resolution annotations of out language specific part
of tree nodes into two hash tables.  Since the functionality of
lto-symtab.c is now available to all parts of gcc, there is not need
for the input_cgraph lang-hook.  I also move the cgraph read/write
part of the lto1 FE back to lto-cgraph.c, where it logically belong.

-Doug

2008-10-27  Doug Kwan  <dougkwan@google.com>

        * lto-symtab.c (New file): Move from up from lto sub-directory.
        * lto-cgraph.c (lto-tree-in.h): New include
        (input_overwrite_node, input_node, input_edge, input_cgraph_1,
        input_cgraph): Move from back from lto/lto-lang.c to here.
        * lto-tree-in.h (lto_symtab_clear_resolution): New prototype.
        * langhooks.c (lhd_input_cgraph): Remove.
        * langhooks.h (struct lang_hooks_for_lto): Remove INPUT_CRAPH hooks.
        * Makefile.in (PLUGIN_API_H, LTO_TREE_IN_H): New vars.
        (OBJS-common): Include lto-symtab.o
        (lto-cgraph.o): Add LTO_TREE_IN_H in dependency.
        (lto-function-in.o): Ditto.
        (lto-symtab.o): New rule.
        (GTFILES): Add lto-symtab.c
        * langhooks-def.h (lhd_input_cgraph): Remove prototype.
        (LANG_HOOKS_INPUT_GRAPH): Remove macro.
        (LANG_HOOKS_LTO): Remove LANG_HOOKS_INPUT_CGRAPH from initializer.

lto/ChangeLog:
        * lto.c (free_decl): Call lto_symtab_clear_resolution when freeing
        DECL.
        * Make-lang.in (LTO_OBJS): Remove lto/lto-symtab.o
        (lto/lto-symtab.o): Remove rule.
        * lto-tree.h (struct lang_identifier): Remove LTO specific fields.
        (struct lang_decl): Remove RESOLUTION and add DUMMY in struct.
        (LANG_IDENTIFIER_CAST, LTO_IDENTIFIER_DECL, LTO_DECL_RESOLUTION):
        Remove macros.
        lto-symtab.c (File): Move up one level.
        lto-lang.c (cgraph.h): Remove include.
        (input_overwrite_node, input_node, input_edge, input_cgraph_1,
        input_cgraph): Move to lto-cgraph.c in gcc directory above.
        (LANG_HOOKS_INPUT_CGRAPH): Remove use of macro.

Attachment: patch.txt
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