diff options
Diffstat (limited to 'contrib/gcc/c-objc-common.c')
-rw-r--r-- | contrib/gcc/c-objc-common.c | 304 |
1 files changed, 102 insertions, 202 deletions
diff --git a/contrib/gcc/c-objc-common.c b/contrib/gcc/c-objc-common.c index db3e758..fe0c0d5 100644 --- a/contrib/gcc/c-objc-common.c +++ b/contrib/gcc/c-objc-common.c @@ -1,5 +1,5 @@ /* Some code common to C and ObjC front ends. - Copyright (C) 2001 Free Software Foundation, Inc. + Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of GCC. @@ -20,6 +20,8 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "config.h" #include "system.h" +#include "coretypes.h" +#include "tm.h" #include "tree.h" #include "rtl.h" #include "insn-config.h" @@ -35,18 +37,14 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "ggc.h" #include "langhooks.h" #include "target.h" +#include "cgraph.h" -static bool c_tree_printer PARAMS ((output_buffer *, text_info *)); -static tree inline_forbidden_p PARAMS ((tree *, int *, void *)); -static void expand_deferred_fns PARAMS ((void)); -static tree start_cdtor PARAMS ((int)); -static void finish_cdtor PARAMS ((tree)); - -static GTY(()) varray_type deferred_fns; +static bool c_tree_printer (pretty_printer *, text_info *); +static tree start_cdtor (int); +static void finish_cdtor (tree); int -c_missing_noreturn_ok_p (decl) - tree decl; +c_missing_noreturn_ok_p (tree decl) { /* A missing noreturn is not ok for freestanding implementations and ok for the `main' function in hosted implementations. */ @@ -58,124 +56,51 @@ c_missing_noreturn_ok_p (decl) such functions always being inlined when optimizing. */ int -c_disregard_inline_limits (fn) - tree fn; +c_disregard_inline_limits (tree fn) { if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL) return 1; - return DECL_DECLARED_INLINE_P (fn) && DECL_EXTERNAL (fn); -} - -static tree -inline_forbidden_p (nodep, walk_subtrees, fn) - tree *nodep; - int *walk_subtrees ATTRIBUTE_UNUSED; - void *fn; -{ - tree node = *nodep; - tree t; - - switch (TREE_CODE (node)) - { - case CALL_EXPR: - t = get_callee_fndecl (node); - - if (! t) - break; - - /* We cannot inline functions that call setjmp. */ - if (setjmp_call_p (t)) - return node; - - switch (DECL_FUNCTION_CODE (t)) - { - /* We cannot inline functions that take a variable number of - arguments. */ - case BUILT_IN_VA_START: - case BUILT_IN_STDARG_START: - case BUILT_IN_NEXT_ARG: - case BUILT_IN_VA_END: -#if 0 - /* Functions that need information about the address of the - caller can't (shouldn't?) be inlined. */ - case BUILT_IN_RETURN_ADDRESS: -#endif - return node; - - default: - break; - } - - break; - - case DECL_STMT: - /* We cannot inline functions that contain other functions. */ - if (TREE_CODE (TREE_OPERAND (node, 0)) == FUNCTION_DECL - && DECL_INITIAL (TREE_OPERAND (node, 0))) - return node; - break; - - case GOTO_STMT: - case GOTO_EXPR: - t = TREE_OPERAND (node, 0); - - /* We will not inline a function which uses computed goto. The - addresses of its local labels, which may be tucked into - global storage, are of course not constant across - instantiations, which causes unexpected behavior. */ - if (TREE_CODE (t) != LABEL_DECL) - return node; - - /* We cannot inline a nested function that jumps to a nonlocal - label. */ - if (TREE_CODE (t) == LABEL_DECL - && DECL_CONTEXT (t) && DECL_CONTEXT (t) != fn) - return node; - - break; - - case RECORD_TYPE: - case UNION_TYPE: - /* We cannot inline a function of the form - - void F (int i) { struct S { int ar[i]; } s; } - - Attempting to do so produces a catch-22 in tree-inline.c. - If walk_tree examines the TYPE_FIELDS chain of RECORD_TYPE/ - UNION_TYPE nodes, then it goes into infinite recursion on a - structure containing a pointer to its own type. If it doesn't, - then the type node for S doesn't get adjusted properly when - F is inlined, and we abort in find_function_data. */ - for (t = TYPE_FIELDS (node); t; t = TREE_CHAIN (t)) - if (variably_modified_type_p (TREE_TYPE (t))) - return node; - - default: - break; - } - - return NULL_TREE; + return (!flag_really_no_inline && DECL_DECLARED_INLINE_P (fn) + && DECL_EXTERNAL (fn)); } int -c_cannot_inline_tree_fn (fnp) - tree *fnp; +c_cannot_inline_tree_fn (tree *fnp) { tree fn = *fnp; tree t; + bool do_warning = (warn_inline + && DECL_INLINE (fn) + && DECL_DECLARED_INLINE_P (fn) + && !DECL_IN_SYSTEM_HEADER (fn)); if (flag_really_no_inline && lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) == NULL) - return 1; + { + if (do_warning) + warning ("%Jfunction '%F' can never be inlined because it " + "is suppressed using -fno-inline", fn, fn); + goto cannot_inline; + } - /* Don't auto-inline anything that might not be bound within + /* Don't auto-inline anything that might not be bound within this unit of translation. */ if (!DECL_DECLARED_INLINE_P (fn) && !(*targetm.binds_local_p) (fn)) - goto cannot_inline; + { + if (do_warning) + warning ("%Jfunction '%F' can never be inlined because it might not " + "be bound within this unit of translation", fn, fn); + goto cannot_inline; + } if (! function_attribute_inlinable_p (fn)) - goto cannot_inline; + { + if (do_warning) + warning ("%Jfunction '%F' can never be inlined because it uses " + "attributes conflicting with inlining", fn, fn); + goto cannot_inline; + } /* If a function has pending sizes, we must not defer its compilation, and we can't inline it as a tree. */ @@ -185,39 +110,26 @@ c_cannot_inline_tree_fn (fnp) put_pending_sizes (t); if (t) - goto cannot_inline; + { + if (do_warning) + warning ("%Jfunction '%F' can never be inlined because it has " + "pending sizes", fn, fn); + goto cannot_inline; + } } - if (DECL_CONTEXT (fn)) + if (! DECL_FILE_SCOPE_P (fn)) { /* If a nested function has pending sizes, we may have already saved them. */ if (DECL_LANG_SPECIFIC (fn)->pending_sizes) - goto cannot_inline; - } - else - { - /* We rely on the fact that this function is called upfront, - just before we start expanding a function. If FN is active - (i.e., it's the current_function_decl or a parent thereof), - we have to walk FN's saved tree. Otherwise, we can safely - assume we have done it before and, if we didn't mark it as - uninlinable (in which case we wouldn't have been called), it - is inlinable. Unfortunately, this strategy doesn't work for - nested functions, because they're only expanded as part of - their enclosing functions, so the inlinability test comes in - late. */ - t = current_function_decl; - - while (t && t != fn) - t = DECL_CONTEXT (t); - if (! t) - return 0; + { + if (do_warning) + warning ("%Jnested function '%F' can never be inlined because it " + "has possibly saved pending sizes", fn, fn); + goto cannot_inline; + } } - - if (walk_tree_without_duplicates - (&DECL_SAVED_TREE (fn), inline_forbidden_p, fn)) - goto cannot_inline; return 0; @@ -229,8 +141,7 @@ c_cannot_inline_tree_fn (fnp) /* Called from check_global_declarations. */ bool -c_warn_unused_global_decl (decl) - tree decl; +c_warn_unused_global_decl (tree decl) { if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) return false; @@ -241,15 +152,19 @@ c_warn_unused_global_decl (decl) } /* Initialization common to C and Objective-C front ends. */ -const char * -c_objc_common_init (filename) - const char *filename; +bool +c_objc_common_init (void) { + static const enum tree_code stmt_codes[] = { + c_common_stmt_codes + }; + + INIT_STATEMENT_CODES (stmt_codes); + c_init_decl_processing (); - filename = c_common_init (filename); - if (filename == NULL) - return NULL; + if (c_common_init () == false) + return false; lang_expand_decl_stmt = c_expand_decl_stmt; @@ -269,50 +184,11 @@ c_objc_common_init (filename) mesg_implicit_function_declaration = 0; } - VARRAY_TREE_INIT (deferred_fns, 32, "deferred_fns"); - - return filename; -} - -/* Register a function tree, so that its optimization and conversion - to RTL is only done at the end of the compilation. */ - -int -defer_fn (fn) - tree fn; -{ - VARRAY_PUSH_TREE (deferred_fns, fn); - - return 1; -} - -/* Expand deferred functions for C and ObjC. */ - -static void -expand_deferred_fns () -{ - unsigned int i; - - for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++) - { - tree decl = VARRAY_TREE (deferred_fns, i); - - if (! TREE_ASM_WRITTEN (decl)) - { - /* For static inline functions, delay the decision whether to - emit them or not until wrapup_global_declarations. */ - if (! TREE_PUBLIC (decl)) - DECL_DEFER_OUTPUT (decl) = 1; - c_expand_deferred_function (decl); - } - } - - deferred_fns = 0; + return true; } static tree -start_cdtor (method_type) - int method_type; +start_cdtor (int method_type) { tree fnname = get_file_function_name (method_type); tree void_list_node_1 = build_tree_list (NULL_TREE, void_type_node); @@ -338,8 +214,7 @@ start_cdtor (method_type) } static void -finish_cdtor (body) - tree body; +finish_cdtor (tree body) { tree scope; tree block; @@ -351,15 +226,23 @@ finish_cdtor (body) RECHAIN_STMTS (body, COMPOUND_BODY (body)); - finish_function (0, 0); + finish_function (); } /* Called at end of parsing, but before end-of-file processing. */ void -c_objc_common_finish_file () +c_objc_common_finish_file (void) { - expand_deferred_fns (); + if (pch_file) + c_common_write_pch (); + + /* If multiple translation units were built, copy information between + them based on linkage rules. */ + merge_translation_unit_decls (); + + cgraph_finalize_compilation_unit (); + cgraph_optimize (); if (static_ctors) { @@ -399,6 +282,7 @@ c_objc_common_finish_file () source-level entity onto BUFFER. The meaning of the format specifiers is as follows: %D: a general decl, + %E: An expression, %F: a function declaration, %T: a type. @@ -407,28 +291,44 @@ c_objc_common_finish_file () Please notice when called, the `%' part was already skipped by the diagnostic machinery. */ static bool -c_tree_printer (buffer, text) - output_buffer *buffer; - text_info *text; +c_tree_printer (pretty_printer *pp, text_info *text) { tree t = va_arg (*text->args_ptr, tree); + const char *n = "({anonymous})"; switch (*text->format_spec) { case 'D': case 'F': + if (DECL_NAME (t)) + n = (*lang_hooks.decl_printable_name) (t, 2); + break; + case 'T': - { - const char *n = DECL_NAME (t) - ? (*lang_hooks.decl_printable_name) (t, 2) - : "({anonymous})"; - output_add_string (buffer, n); - } - return true; + if (TREE_CODE (t) == TYPE_DECL) + { + if (DECL_NAME (t)) + n = (*lang_hooks.decl_printable_name) (t, 2); + } + else + { + t = TYPE_NAME (t); + if (t) + n = IDENTIFIER_POINTER (t); + } + break; + + case 'E': + if (TREE_CODE (t) == IDENTIFIER_NODE) + n = IDENTIFIER_POINTER (t); + else + return false; + break; default: return false; } -} -#include "gt-c-objc-common.h" + pp_string (pp, n); + return true; +} |