「Lang dependent init」を編集中

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*言語に固有の初期化．

<code>

</code>

1832 [[location_t]] save_loc = [[input_location]];

1833 if ([[dump_base_name]] == 0)

1834 [[dump_base_name]] = name && name[0] ? name : "gccdump";

1836 /* Other front-end initialization. */

1837 #ifdef [[USE_MAPPED_LOCATION]]

1838 [[input_location]] = [[BUILTINS_LOCATION]];

1840 [[input_filename]] = "<built-in>";

1841 [[input_line]] = 0;

</code>

* 結局，回りまわって define されているだけで，lang_hooks.init() は、Cでは[[c_objc_common_init]] () を呼び出しているのと同じ．様々な言語に対応するために，非常に抽象的になっていて，まわりくどい．

**新しいfrontend たとえばbl(bl language)ではbl_init()をcのコードを触らずによびだせる功罪もある。

参考サイト : https://www.codeblog.org/blog/ssato/20060304.html

<code>

1843 if ([[lang_hooks]].init () == 0)

1845 [[input_location]] = save_loc;

1847 [[init_asm_output]] (name);

1849 /* These create various _DECL nodes, so need to be called after the

1850 front end is initialized. */

1851 [[init_eh]] ();

1852 [[init_optabs]] ();

1854 /* The following initialization functions need to generate rtl, so

1855 provide a dummy function context for them. */

1856 [[init_dummy_function_start]] ();

1857 [[init_expr_once]] ();

1858 [[expand_dummy_function_end]] ();

1860 /* If dbx symbol table desired, initialize writing it and output the

1861 predefined types. */

1862 [[timevar_push]] ([[TV_SYMOUT]]);

1864 #if defined [[DWARF2_DEBUGGING_INFO]] || defined [[DWARF2_UNWIND_INFO]]

1865 if ([[dwarf2out_do_frame]] ())

1866 [[dwarf2out_frame_init]] ();

1871 (*[[debug_hooks]]->init) (name);

1873 [[timevar_pop]] ([[TV_SYMOUT]]);

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