X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Flanghooks.c;h=633caf58c538ad9fa882be8086fb8a784ba94d50;hb=181dd1c5a49707a7901562f374fecf94973cadcf;hp=b8e7aaacc272917f973afdc0a7aa1160b3e10ce3;hpb=ebb7d626ed01501d391edbedf90c8bdb32e8a7b1;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/langhooks.c b/gcc/langhooks.c index b8e7aaacc27..633caf58c53 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 + Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. Contributed by Alexandre Oliva @@ -27,7 +27,7 @@ along with GCC; see the file COPYING3. If not see #include "toplev.h" #include "tree.h" #include "tree-inline.h" -#include "tree-gimple.h" +#include "gimple.h" #include "rtl.h" #include "insn-config.h" #include "integrate.h" @@ -37,6 +37,8 @@ along with GCC; see the file COPYING3. If not see #include "langhooks-def.h" #include "ggc.h" #include "diagnostic.h" +#include "cgraph.h" +#include "output.h" /* Do nothing; in many cases the default hook. */ @@ -52,6 +54,13 @@ lhd_do_nothing_t (tree ARG_UNUSED (t)) { } +/* Pass through (tree). */ +tree +lhd_pass_through_t (tree t) +{ + return t; +} + /* Do nothing (int). */ void @@ -76,14 +85,6 @@ lhd_do_nothing_f (struct function * ARG_UNUSED (f)) { } -/* Do nothing (return the tree node passed). */ - -tree -lhd_return_tree (tree t) -{ - return t; -} - /* Do nothing (return NULL_TREE). */ tree @@ -113,6 +114,9 @@ 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; } @@ -125,14 +129,6 @@ 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 @@ -141,7 +137,7 @@ lhd_warn_unused_global_decl (const_tree decl) /* This is what used to exist in check_global_declarations. Probably not many of these actually apply to non-C languages. */ - if (TREE_CODE (decl) == FUNCTION_DECL && DECL_INLINE (decl)) + if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) return false; if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl)) return false; @@ -224,29 +220,6 @@ 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 * @@ -295,24 +268,12 @@ 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 -lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED, tree *pre_p ATTRIBUTE_UNUSED, - tree *post_p ATTRIBUTE_UNUSED) +lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED, + gimple_seq *pre_p ATTRIBUTE_UNUSED, + gimple_seq *post_p ATTRIBUTE_UNUSED) { return GS_UNHANDLED; } @@ -335,28 +296,25 @@ 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. */ @@ -381,12 +339,15 @@ lhd_initialize_diagnostics (struct diagnostic_context *ctx ATTRIBUTE_UNUSED) /* The default function to print out name of current function that caused an error. */ void -lhd_print_error_function (diagnostic_context *context, const char *file) +lhd_print_error_function (diagnostic_context *context, const char *file, + diagnostic_info *diagnostic) { - if (diagnostic_last_function_changed (context)) + if (diagnostic_last_function_changed (context, diagnostic)) { const char *old_prefix = context->printer->prefix; - char *new_prefix = file ? file_name_as_prefix (file) : NULL; + tree abstract_origin = diagnostic->abstract_origin; + char *new_prefix = (file && abstract_origin == NULL) + ? file_name_as_prefix (file) : NULL; pp_set_prefix (context->printer, new_prefix); @@ -394,17 +355,97 @@ lhd_print_error_function (diagnostic_context *context, const char *file) pp_printf (context->printer, _("At top level:")); else { - if (TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE) + tree fndecl, ao; + + if (abstract_origin) + { + ao = BLOCK_ABSTRACT_ORIGIN (abstract_origin); + while (TREE_CODE (ao) == BLOCK + && BLOCK_ABSTRACT_ORIGIN (ao) + && BLOCK_ABSTRACT_ORIGIN (ao) != ao) + ao = BLOCK_ABSTRACT_ORIGIN (ao); + gcc_assert (TREE_CODE (ao) == FUNCTION_DECL); + fndecl = ao; + } + else + fndecl = current_function_decl; + + if (TREE_CODE (TREE_TYPE (fndecl)) == METHOD_TYPE) pp_printf - (context->printer, _("In member function %qs:"), - lang_hooks.decl_printable_name (current_function_decl, 2)); + (context->printer, _("In member function %qs"), + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); else pp_printf - (context->printer, _("In function %qs:"), - lang_hooks.decl_printable_name (current_function_decl, 2)); + (context->printer, _("In function %qs"), + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); + + while (abstract_origin) + { + location_t *locus; + tree block = abstract_origin; + + locus = &BLOCK_SOURCE_LOCATION (block); + fndecl = NULL; + block = BLOCK_SUPERCONTEXT (block); + while (block && TREE_CODE (block) == BLOCK + && BLOCK_ABSTRACT_ORIGIN (block)) + { + ao = BLOCK_ABSTRACT_ORIGIN (block); + + while (TREE_CODE (ao) == BLOCK + && BLOCK_ABSTRACT_ORIGIN (ao) + && BLOCK_ABSTRACT_ORIGIN (ao) != ao) + ao = BLOCK_ABSTRACT_ORIGIN (ao); + + if (TREE_CODE (ao) == FUNCTION_DECL) + { + fndecl = ao; + break; + } + else if (TREE_CODE (ao) != BLOCK) + break; + + block = BLOCK_SUPERCONTEXT (block); + } + if (fndecl) + abstract_origin = block; + else + { + while (block && TREE_CODE (block) == BLOCK) + block = BLOCK_SUPERCONTEXT (block); + + if (block && TREE_CODE (block) == FUNCTION_DECL) + fndecl = block; + abstract_origin = NULL; + } + if (fndecl) + { + expanded_location s = expand_location (*locus); + pp_character (context->printer, ','); + pp_newline (context->printer); + if (s.file != NULL) + { + if (flag_show_column) + pp_printf (context->printer, + _(" inlined from %qs at %s:%d:%d"), + 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"), + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), + s.file, s.line); + + } + else + pp_printf (context->printer, _(" inlined from %qs"), + identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); + } + } + pp_character (context->printer, ':'); } - diagnostic_set_last_function (context); + diagnostic_set_last_function (context, diagnostic); pp_flush (context->printer); context->printer->prefix = old_prefix; free ((char*) new_prefix); @@ -413,8 +454,7 @@ lhd_print_error_function (diagnostic_context *context, const char *file) tree lhd_callgraph_analyze_expr (tree *tp ATTRIBUTE_UNUSED, - int *walk_subtrees ATTRIBUTE_UNUSED, - tree decl ATTRIBUTE_UNUSED) + int *walk_subtrees ATTRIBUTE_UNUSED) { return NULL; } @@ -432,8 +472,7 @@ lhd_to_target_charset (HOST_WIDE_INT c) } tree -lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED, - bool *ti ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED) +lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED) { return expr; } @@ -454,7 +493,7 @@ lhd_omp_predetermined_sharing (tree decl ATTRIBUTE_UNUSED) tree lhd_omp_assignment (tree clause ATTRIBUTE_UNUSED, tree dst, tree src) { - return build_gimple_modify_stmt (dst, src); + return build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); } /* Register language specific type size variables as potentially OpenMP @@ -466,24 +505,28 @@ 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) { @@ -497,13 +540,99 @@ 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; + + /* 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; + } +}