diff options
Diffstat (limited to 'gcc/c-common.h')
| -rw-r--r-- | gcc/c-common.h | 90 |
1 files changed, 73 insertions, 17 deletions
diff --git a/gcc/c-common.h b/gcc/c-common.h index 389f32a..2477a0f 100644 --- a/gcc/c-common.h +++ b/gcc/c-common.h @@ -22,6 +22,8 @@ Boston, MA 02111-1307, USA. */ #ifndef GCC_C_COMMON_H #define GCC_C_COMMON_H +#include "splay-tree.h" + /* Usage of TREE_LANG_FLAG_?: 0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT). TREE_NEGATED_INT (in INTEGER_CST). @@ -194,6 +196,10 @@ enum c_tree_index extern tree c_global_trees[CTI_MAX]; +/* Mark which labels are explicitly declared. + These may be shadowed, and may be referenced from nested functions. */ +#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) + typedef enum c_language_kind { clk_c, /* A dialect of C: K&R C, ANSI/ISO C89, C2000, @@ -237,6 +243,11 @@ struct language_function { /* While we are parsing the function, this contains information about the statement-tree that we are building. */ struct stmt_tree_s x_stmt_tree; + /* The stack of SCOPE_STMTs for the current function. */ + tree x_scope_stmt_stack; + /* Nonzero if __FUNCTION__ and its ilk have been declared in this + function. */ + int x_function_name_declared_p; }; /* When building a statement-tree, this is the last statement added to @@ -248,6 +259,25 @@ struct language_function { #define last_expr_type (current_stmt_tree ()->x_last_expr_type) +/* LAST_TREE contains the last statement parsed. These are chained + together through the TREE_CHAIN field, but often need to be + re-organized since the parse is performed bottom-up. This macro + makes LAST_TREE the indicated SUBSTMT of STMT. */ + +#define RECHAIN_STMTS(stmt, substmt) \ + do { \ + substmt = TREE_CHAIN (stmt); \ + TREE_CHAIN (stmt) = NULL_TREE; \ + last_tree = stmt; \ + } while (0) + +/* Language-specific hooks. */ + +extern int (*lang_statement_code_p) PARAMS ((enum tree_code)); +extern void (*lang_expand_stmt) PARAMS ((tree)); +extern void (*lang_expand_decl_stmt) PARAMS ((tree)); +extern void (*lang_expand_function_end) PARAMS ((void)); + /* The type of a function that walks over tree structure. */ typedef tree (*walk_tree_fn) PARAMS ((tree *, @@ -255,30 +285,39 @@ typedef tree (*walk_tree_fn) PARAMS ((tree *, void *)); extern stmt_tree current_stmt_tree PARAMS ((void)); +extern tree *current_scope_stmt_stack PARAMS ((void)); extern void begin_stmt_tree PARAMS ((tree *)); extern tree add_stmt PARAMS ((tree)); +extern void add_decl_stmt PARAMS ((tree)); +extern tree add_scope_stmt PARAMS ((int, int)); extern void finish_stmt_tree PARAMS ((tree *)); extern int statement_code_p PARAMS ((enum tree_code)); -extern int (*lang_statement_code_p) PARAMS ((enum tree_code)); extern tree walk_stmt_tree PARAMS ((tree *, walk_tree_fn, void *)); extern void prep_stmt PARAMS ((tree)); -extern void (*lang_expand_stmt) PARAMS ((tree)); extern void expand_stmt PARAMS ((tree)); +extern void mark_stmt_tree PARAMS ((void *)); -/* LAST_TREE contains the last statement parsed. These are chained - together through the TREE_CHAIN field, but often need to be - re-organized since the parse is performed bottom-up. This macro - makes LAST_TREE the indicated SUBSTMT of STMT. */ +/* Extra information associated with a DECL. Other C dialects extend + this structure in various ways. The C front-end only uses this + structure for FUNCTION_DECLs; all other DECLs have a NULL + DECL_LANG_SPECIFIC field. */ -#define RECHAIN_STMTS(stmt, substmt) \ - do { \ - substmt = TREE_CHAIN (stmt); \ - TREE_CHAIN (stmt) = NULL_TREE; \ - last_tree = stmt; \ - } while (0) +struct c_lang_decl { + /* In a FUNCTION_DECL, this is DECL_SAVED_TREE. */ + tree saved_tree; +}; + +/* In a FUNCTION_DECL, the saved representation of the body of the + entire function. Usually a COMPOUND_STMT, but in C++ this may also + be a RETURN_INIT, CTOR_INITIALIZER, or TRY_BLOCK. */ +#define DECL_SAVED_TREE(NODE) \ + (((struct c_lang_decl *) DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE))) \ + ->saved_tree) + +extern void c_mark_lang_decl PARAMS ((struct c_lang_decl *)); /* The variant of the C language being processed. Each C language front-end defines this variable. */ @@ -363,8 +402,10 @@ extern void c_apply_type_quals_to_decl PARAMS ((int, tree)); NOP_EXPR is used as a special case (see truthvalue_conversion). */ extern void binary_op_error PARAMS ((enum tree_code)); extern void c_expand_expr_stmt PARAMS ((tree)); -extern void c_expand_start_cond PARAMS ((tree, int, int)); +extern void c_expand_start_cond PARAMS ((tree, int)); +extern void c_finish_then PARAMS ((void)); extern void c_expand_start_else PARAMS ((void)); +extern void c_finish_else PARAMS ((void)); extern void c_expand_end_cond PARAMS ((void)); /* Validate the expression after `case' and apply default promotions. */ extern tree check_case_value PARAMS ((tree)); @@ -589,8 +630,6 @@ extern void genrtl_asm_stmt PARAMS ((tree, tree, tree)); extern void genrtl_decl_cleanup PARAMS ((tree, tree)); extern int stmts_are_full_exprs_p PARAMS ((void)); -typedef void (*expand_expr_stmt_fn) PARAMS ((tree)); -extern expand_expr_stmt_fn lang_expand_expr_stmt; extern int anon_aggr_type_p PARAMS ((tree)); /* For a VAR_DECL that is an anonymous union, these are the various @@ -611,8 +650,6 @@ extern tree build_return_stmt PARAMS ((tree)); #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE) extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int)); -extern int current_function_name_declared PARAMS ((void)); -extern void set_current_function_name_declared PARAMS ((int)); /* These functions must be defined by each front-end which implements a variant of the C language. They are used in c-common.c. */ @@ -637,6 +674,25 @@ extern tree decl_constant_value PARAMS ((tree)); after entering or leaving a header file. */ extern void extract_interface_info PARAMS ((void)); +extern void mark_c_language_function PARAMS ((struct language_function *)); + +extern int case_compare PARAMS ((splay_tree_key, + splay_tree_key)); + +extern tree c_add_case_label PARAMS ((splay_tree, + tree, tree, + tree)); + +#ifdef RTX_CODE + +extern struct rtx_def *c_expand_expr PARAMS ((tree, rtx, + enum machine_mode, + enum expand_modifier)); + +extern int c_safe_from_p PARAMS ((rtx, tree)); + +#endif + /* Information recorded about each file examined during compilation. */ struct c_fileinfo |