X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Flanghooks.c;h=37baa271e70b4068b5d3e6255ce90ea9c560b560;hb=2abf995f90bb8441b573eba4ea14c0b8e0c1bba9;hp=30e5bfa9f61acd82d59baee4cb8466a9ec369485;hpb=81549c4d385d89c1415a02a56c04574be7a45ef2;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/langhooks.c b/gcc/langhooks.c index 30e5bfa9f61..37baa271e70 100644 --- a/gcc/langhooks.c +++ b/gcc/langhooks.c @@ -1,5 +1,5 @@ /* Default language-specific hooks. - Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 + Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Contributed by Alexandre Oliva @@ -37,6 +37,9 @@ along with GCC; see the file COPYING3. If not see #include "langhooks-def.h" #include "ggc.h" #include "diagnostic.h" +#include "tree-diagnostic.h" +#include "cgraph.h" +#include "output.h" /* Do nothing; in many cases the default hook. */ @@ -52,6 +55,13 @@ lhd_do_nothing_t (tree ARG_UNUSED (t)) { } +/* Pass through (tree). */ +tree +lhd_pass_through_t (tree t) +{ + return t; +} + /* Do nothing (int). */ void @@ -105,6 +115,9 @@ lhd_return_null_const_tree (const_tree ARG_UNUSED (t)) bool lhd_post_options (const char ** ARG_UNUSED (pfilename)) { + /* Excess precision other than "fast" requires front-end + support. */ + flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; return false; } @@ -117,14 +130,6 @@ lhd_print_tree_nothing (FILE * ARG_UNUSED (file), { } -/* Called from staticp. */ - -tree -lhd_staticp (tree ARG_UNUSED (exp)) -{ - return NULL; -} - /* Called from check_global_declarations. */ bool @@ -158,7 +163,7 @@ lhd_set_decl_assembler_name (tree decl) && (TREE_STATIC (decl) || DECL_EXTERNAL (decl) || TREE_PUBLIC (decl)))); - + /* By default, assume the name to use in assembly code is the same as that used in the source language. (That's correct for C, and GCC used to set DECL_ASSEMBLER_NAME to the same value as @@ -166,7 +171,7 @@ lhd_set_decl_assembler_name (tree decl) compatibility with existing front-ends. This assumption is wrapped in a target hook, to allow for target-specific modification of the identifier. - + Can't use just the variable's own name for a variable whose scope is less than the whole compilation. Concatenate a distinguishing number - we use the DECL_UID. */ @@ -177,7 +182,7 @@ lhd_set_decl_assembler_name (tree decl) { const char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); char *label; - + ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl)); id = get_identifier (label); } @@ -216,29 +221,6 @@ lhd_get_alias_set (tree ARG_UNUSED (t)) return -1; } -/* This is the default expand_expr function. */ - -rtx -lhd_expand_expr (tree ARG_UNUSED (t), rtx ARG_UNUSED (r), - enum machine_mode ARG_UNUSED (mm), - int ARG_UNUSED (em), - rtx * ARG_UNUSED (a)) -{ - gcc_unreachable (); -} - -/* The default language-specific function for expanding a decl. After - the language-independent cases are handled, this function will be - called. If this function is not defined, it is assumed that - declarations other than those for variables and labels do not require - any RTL generation. */ - -int -lhd_expand_decl (tree ARG_UNUSED (t)) -{ - return 0; -} - /* This is the default decl_printable_name function. */ const char * @@ -287,19 +269,6 @@ lhd_tree_dump_type_quals (const_tree t) return TYPE_QUALS (t); } -/* lang_hooks.expr_size: Determine the size of the value of an expression T - in a language-specific way. Returns a tree for the size in bytes. */ - -tree -lhd_expr_size (const_tree exp) -{ - if (DECL_P (exp) - && DECL_SIZE_UNIT (exp) != 0) - return DECL_SIZE_UNIT (exp); - else - return size_in_bytes (TREE_TYPE (exp)); -} - /* lang_hooks.gimplify_expr re-writes *EXPR_P into GIMPLE form. */ int @@ -328,28 +297,25 @@ lhd_decl_ok_for_sibcall (const_tree decl ATTRIBUTE_UNUSED) return true; } -/* Return the COMDAT group into which DECL should be placed. */ - -const char * -lhd_comdat_group (tree decl) -{ - return IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); -} - /* lang_hooks.decls.final_write_globals: perform final processing on global variables. */ void write_global_declarations (void) { + tree globals, decl, *vec; + int len, i; + + /* This lang hook is dual-purposed, and also finalizes the + compilation unit. */ + cgraph_finalize_compilation_unit (); + /* Really define vars that have had only a tentative definition. Really output inline functions that must actually be callable and have not been output so far. */ - tree globals = lang_hooks.decls.getdecls (); - int len = list_length (globals); - tree *vec = XNEWVEC (tree, len); - int i; - tree decl; + globals = lang_hooks.decls.getdecls (); + len = list_length (globals); + vec = XNEWVEC (tree, len); /* Process the decls in reverse order--earliest first. Put them into VEC from back to front, then take out from front. */ @@ -380,7 +346,7 @@ lhd_print_error_function (diagnostic_context *context, const char *file, if (diagnostic_last_function_changed (context, diagnostic)) { const char *old_prefix = context->printer->prefix; - tree abstract_origin = diagnostic->abstract_origin; + tree abstract_origin = diagnostic_abstract_origin (diagnostic); char *new_prefix = (file && abstract_origin == NULL) ? file_name_as_prefix (file) : NULL; @@ -408,11 +374,11 @@ lhd_print_error_function (diagnostic_context *context, const char *file, if (TREE_CODE (TREE_TYPE (fndecl)) == METHOD_TYPE) pp_printf (context->printer, _("In member function %qs"), - lang_hooks.decl_printable_name (fndecl, 2)); + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); else pp_printf (context->printer, _("In function %qs"), - lang_hooks.decl_printable_name (fndecl, 2)); + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); while (abstract_origin) { @@ -449,7 +415,7 @@ lhd_print_error_function (diagnostic_context *context, const char *file, while (block && TREE_CODE (block) == BLOCK) block = BLOCK_SUPERCONTEXT (block); - if (TREE_CODE (block) == FUNCTION_DECL) + if (block && TREE_CODE (block) == FUNCTION_DECL) fndecl = block; abstract_origin = NULL; } @@ -460,21 +426,21 @@ lhd_print_error_function (diagnostic_context *context, const char *file, pp_newline (context->printer); if (s.file != NULL) { - if (flag_show_column && s.column != 0) + if (flag_show_column) pp_printf (context->printer, _(" inlined from %qs at %s:%d:%d"), - lang_hooks.decl_printable_name (fndecl, 2), + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), s.file, s.line, s.column); else pp_printf (context->printer, _(" inlined from %qs at %s:%d"), - lang_hooks.decl_printable_name (fndecl, 2), + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), s.file, s.line); } else pp_printf (context->printer, _(" inlined from %qs"), - lang_hooks.decl_printable_name (fndecl, 2)); + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); } } pp_character (context->printer, ':'); @@ -540,24 +506,28 @@ lhd_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *c ATTRIBUTE_UNUSED, { } -tree -add_builtin_function (const char *name, - tree type, - int function_code, - enum built_in_class cl, - const char *library_name, - tree attrs) +/* Common function for add_builtin_function and + add_builtin_function_ext_scope. */ +static tree +add_builtin_function_common (const char *name, + tree type, + int function_code, + enum built_in_class cl, + const char *library_name, + tree attrs, + tree (*hook) (tree)) { tree id = get_identifier (name); - tree decl = build_decl (FUNCTION_DECL, id, type); + tree decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, id, type); TREE_PUBLIC (decl) = 1; DECL_EXTERNAL (decl) = 1; DECL_BUILT_IN_CLASS (decl) = cl; - DECL_FUNCTION_CODE (decl) = -1; - gcc_assert (DECL_FUNCTION_CODE (decl) >= function_code); - DECL_FUNCTION_CODE (decl) = function_code; + DECL_FUNCTION_CODE (decl) = (enum built_in_function) function_code; + + /* DECL_FUNCTION_CODE is a bitfield; verify that the value fits. */ + gcc_assert (DECL_FUNCTION_CODE (decl) == function_code); if (library_name) { @@ -571,13 +541,101 @@ add_builtin_function (const char *name, else decl_attributes (&decl, NULL_TREE, 0); - return lang_hooks.builtin_function (decl); + return hook (decl); } +/* Create a builtin function. */ + +tree +add_builtin_function (const char *name, + tree type, + int function_code, + enum built_in_class cl, + const char *library_name, + tree attrs) +{ + return add_builtin_function_common (name, type, function_code, cl, + library_name, attrs, + lang_hooks.builtin_function); +} + +/* Like add_builtin_function, but make sure the scope is the external scope. + This is used to delay putting in back end builtin functions until the ISA + that defines the builtin is declared via function specific target options, + which can save memory for machines like the x86_64 that have multiple ISAs. + If this points to the same function as builtin_function, the backend must + add all of the builtins at program initialization time. */ + +tree +add_builtin_function_ext_scope (const char *name, + tree type, + int function_code, + enum built_in_class cl, + const char *library_name, + tree attrs) +{ + return add_builtin_function_common (name, type, function_code, cl, + library_name, attrs, + lang_hooks.builtin_function_ext_scope); +} + tree lhd_builtin_function (tree decl) { lang_hooks.decls.pushdecl (decl); return decl; } + +/* LTO hooks. */ + +/* Used to save and restore any previously active section. */ +static section *saved_section; + + +/* Begin a new LTO output section named NAME. This default implementation + saves the old section and emits assembly code to switch to the new + section. */ + +void +lhd_begin_section (const char *name) +{ + section *section; + + /* Save the old section so we can restore it in lto_end_asm_section. */ + gcc_assert (!saved_section); + saved_section = in_section; + if (!saved_section) + saved_section = text_section; + + /* Create a new section and switch to it. */ + section = get_section (name, SECTION_DEBUG, NULL); + switch_to_section (section); +} + + +/* Write DATA of length LEN to the current LTO output section. This default + implementation just calls assemble_string and frees BLOCK. */ + +void +lhd_append_data (const void *data, size_t len, void *block) +{ + if (data) + assemble_string ((const char *)data, len); + free (block); +} + + +/* Finish the current LTO output section. This default implementation emits + assembly code to switch to any section previously saved by + lhd_begin_section. */ + +void +lhd_end_section (void) +{ + if (saved_section) + { + switch_to_section (saved_section); + saved_section = NULL; + } +}