X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Ffunction.h;h=c1482ac328e659d59871ab2a8528bc489066ab22;hp=39dde5335e8f0f2617eced402c272ff8a466dbc7;hb=9e6e69fead5213ddfee190c0402ff832d6c06537;hpb=a4082e297a1bf0a99f718b855f34a7ee140e40cb diff --git a/gcc/function.h b/gcc/function.h index 39dde5335e8..c1482ac328e 100644 --- a/gcc/function.h +++ b/gcc/function.h @@ -1,6 +1,6 @@ /* Structure for saving state for a nested function. Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2003, 2004 Free Software Foundation, Inc. + 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of GCC. @@ -16,8 +16,8 @@ for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ #ifndef GCC_FUNCTION_H #define GCC_FUNCTION_H @@ -40,7 +40,6 @@ struct sequence_stack GTY(()) /* First and last insns in the chain of the saved sequence. */ rtx first; rtx last; - tree sequence_rtl_expr; struct sequence_stack *next; }; @@ -66,16 +65,11 @@ struct emit_status GTY(()) /* The ends of the doubly-linked chain of rtl for the current function. Both are reset to null at the start of rtl generation for the function. - start_sequence saves both of these on `sequence_stack' along with - `sequence_rtl_expr' and then starts a new, nested sequence of insns. */ + start_sequence saves both of these on `sequence_stack' and then starts + a new, nested sequence of insns. */ rtx x_first_insn; rtx x_last_insn; - /* RTL_EXPR within which the current sequence will be placed. Use to - prevent reuse of any temporaries within the sequence until after the - RTL_EXPR is emitted. */ - tree sequence_rtl_expr; - /* Stack of pending (incomplete) sequences saved by `start_sequence'. Each element describes one pending sequence. The main insn-chain is saved in the last element of the chain, @@ -103,16 +97,12 @@ struct emit_status GTY(()) regno_pointer_align; /* Indexed by pseudo register number, gives the rtx for that pseudo. - Allocated in parallel with regno_pointer_align. - - Note MEM expressions can appear in this array due to the actions - of put_var_into_stack. */ + Allocated in parallel with regno_pointer_align. */ rtx * GTY ((length ("%h.x_reg_rtx_no"))) x_regno_reg_rtx; }; /* For backward compatibility... eventually these should all go away. */ #define reg_rtx_no (cfun->emit->x_reg_rtx_no) -#define seq_rtl_expr (cfun->emit->sequence_rtl_expr) #define regno_reg_rtx (cfun->emit->x_regno_reg_rtx) #define seq_stack (cfun->emit->sequence_stack) @@ -157,9 +147,6 @@ struct expr_status GTY(()) /* List of labels that must never be deleted. */ rtx x_forced_labels; - - /* Postincrements that still need to be expanded. */ - rtx x_pending_chain; }; #define pending_stack_adjust (cfun->expr->x_pending_stack_adjust) @@ -167,7 +154,6 @@ struct expr_status GTY(()) #define saveregs_value (cfun->expr->x_saveregs_value) #define apply_args_value (cfun->expr->x_apply_args_value) #define forced_labels (cfun->expr->x_forced_labels) -#define pending_chain (cfun->expr->x_pending_chain) #define stack_pointer_delta (cfun->expr->x_stack_pointer_delta) /* This structure can save all the important global and static variables @@ -176,17 +162,24 @@ struct expr_status GTY(()) struct function GTY(()) { struct eh_status *eh; - struct stmt_status *stmt; + struct eh_status *saved_eh; struct expr_status *expr; struct emit_status *emit; struct varasm_status *varasm; + /* The control flow graph for this function. */ + struct control_flow_graph *cfg; + struct control_flow_graph *saved_cfg; + bool after_inlining; + /* For tree-optimize.c. */ /* Saved tree and arguments during tree optimization. Used later for inlining */ - tree saved_tree; tree saved_args; + tree saved_static_chain_decl; + tree saved_blocks; + tree saved_unexpanded_var_list; /* For function.c. */ @@ -236,19 +229,10 @@ struct function GTY(()) has_hard_reg_initial_val (see integrate.[hc]). */ struct initial_value_struct *hard_reg_initial_vals; - /* Number of function calls seen so far in current function. */ - int x_function_call_count; - /* List (chain of EXPR_LIST) of labels heading the current handlers for nonlocal gotos. */ rtx x_nonlocal_goto_handler_labels; - /* Label that will go on parm cleanup code, if any. - Jumping to this label runs cleanup code for parameters, if - such code must be run. Following this code is the logical return - label. */ - rtx x_cleanup_label; - /* Label that will go on function epilogue. Jumping to this label serves as a "return" instruction on machines which require execution of the epilogue on all returns. */ @@ -259,17 +243,10 @@ struct function GTY(()) on machines which require execution of the epilogue on all returns. */ rtx x_naked_return_label; - /* List (chain of EXPR_LISTs) of pseudo-regs of SAVE_EXPRs. - So we can mark them all live at the end of the function, if nonopt. */ - rtx x_save_expr_regs; - /* List (chain of EXPR_LISTs) of all stack slots in this function. Made for the sake of unshare_all_rtl. */ rtx x_stack_slot_list; - /* Chain of all RTL_EXPRs that have insns in them. */ - tree x_rtl_expr_chain; - /* Place after which to insert the tail_recursion_label if we need one. */ rtx x_tail_recursion_reentry; @@ -284,7 +261,7 @@ struct function GTY(()) If stack grows up, this is the address for the next slot. */ HOST_WIDE_INT x_frame_offset; - /* A VAR_DECL that should contain the static chain for this function. + /* A PARM_DECL that should contain the static chain for this function. It will be initialized at the beginning of the function. */ tree static_chain_decl; @@ -296,16 +273,6 @@ struct function GTY(()) /* Insn after which register parms and SAVE_EXPRs are born, if nonopt. */ rtx x_parm_birth_insn; - /* 1 + last pseudo register number possibly used for loading a copy - of a parameter of this function. */ - unsigned int x_max_parm_reg; - - /* Vector indexed by REGNO, containing location on stack in which - to put the parm which is nominally in pseudo register REGNO, - if we discover that that parm must go in the stack. The highest - element in this vector is one less than MAX_PARM_REG, above. */ - rtx * GTY ((length ("%h.x_max_parm_reg"))) x_parm_reg_stack_loc; - /* List of all used temporaries allocated, by level. */ struct varray_head_tag * GTY((param_is (struct temp_slot))) x_used_temp_slots; @@ -315,15 +282,6 @@ struct function GTY(()) /* Current nesting level for temporaries. */ int x_temp_slot_level; - /* Current nesting level for variables in a block. */ - int x_var_temp_slot_level; - - /* When temporaries are created by TARGET_EXPRs, they are created at - this level of temp_slot_level, so that they can remain allocated - until no longer needed. CLEANUP_POINT_EXPRs define the lifetime - of TARGET_EXPRs. */ - int x_target_temp_slot_level; - /* This slot is initialized as 0 and is added to during the nested function. */ struct var_refs_queue *fixup_var_refs_queue; @@ -333,20 +291,28 @@ struct function GTY(()) int no_debugging_symbols; rtvec original_arg_vector; tree original_decl_initial; + /* Highest label number in current function. */ int inl_max_label_num; /* Function sequence number for profiling, debugging, etc. */ int funcdef_no; + /* For flow.c. */ + + /* Highest loop depth seen so far in loop analysis. Used in flow.c + for the "failure strategy" when doing liveness analysis starting + with non-empty initial sets. */ + int max_loop_depth; + /* For md files. */ /* tm.h can use this to store whatever it likes. */ struct machine_function * GTY ((maybe_undef)) machine; /* The largest alignment of slot allocated on the stack. */ - int stack_alignment_needed; + unsigned int stack_alignment_needed; /* Preferred alignment of the end of stack frame. */ - int preferred_stack_boundary; + unsigned int preferred_stack_boundary; /* Set when the call to function itself has been emit. */ bool recursive_call_emit; /* Set when the tail call has been produced. */ @@ -361,10 +327,6 @@ struct function GTY(()) delay list for them is recorded here. */ rtx epilogue_delay_list; - /* Nonzero if NOTE_INSN_BLOCK_BEG / NOTE_INSN_BLOCK_END notes should not - be emitted. */ - unsigned int dont_emit_block_notes : 1; - /* How commonly executed the function is. Initialized during branch probabilities pass. */ enum function_frequency { @@ -394,6 +356,24 @@ struct function GTY(()) /* The variables unexpanded so far. */ tree unexpanded_var_list; + /* Assembly labels for the hot and cold text sections, to + be used by debugger functions for determining the size of text + sections. */ + + const char *hot_section_label; + const char *cold_section_label; + const char *hot_section_end_label; + const char *cold_section_end_label; + + /* String to be used for name of cold text sections, via + targetm.asm_out.named_section. */ + + const char *unlikely_text_section_name; + + /* A variable living at the top of the frame that holds a known value. + Used for detecting stack clobbers. */ + tree stack_protect_guard; + /* Collected bit flags. */ /* Nonzero if function being compiled needs to be given an address @@ -410,13 +390,14 @@ struct function GTY(()) /* Nonzero if function being compiled can call setjmp. */ unsigned int calls_setjmp : 1; - /* Nonzero if function being compiled can call longjmp. */ - unsigned int calls_longjmp : 1; - /* Nonzero if function being compiled can call alloca, either as a subroutine or builtin. */ unsigned int calls_alloca : 1; + /* Nonzero if function being compiled called builtin_return_addr or + builtin_frame_address with non-zero count. */ + unsigned int accesses_prior_frames : 1; + /* Nonzero if the function calls __builtin_eh_return. */ unsigned int calls_eh_return : 1; @@ -428,12 +409,6 @@ struct function GTY(()) function. */ unsigned int has_nonlocal_goto : 1; - /* Nonzero if function being compiled contains nested functions. */ - unsigned int contains_functions : 1; - - /* Nonzero if the function being compiled issues a computed jump. */ - unsigned int has_computed_jump : 1; - /* Nonzero if the current function is a thunk, i.e., a lightweight function implemented by the output_mi_thunk hook) that just adjusts one of its arguments and forwards to another @@ -447,10 +422,6 @@ struct function GTY(()) can throw. */ unsigned int all_throwers_are_sibcalls : 1; - /* Nonzero if instrumentation calls for function entry and exit should be - generated. */ - unsigned int instrument_entry_exit : 1; - /* Nonzero if profiling code should be generated. */ unsigned int profile : 1; @@ -481,8 +452,22 @@ struct function GTY(()) /* Nonzero if code to initialize arg_pointer_save_area has been emitted. */ unsigned int arg_pointer_save_area_init : 1; + + /* Number of units of general registers that need saving in stdarg + function. What unit is depends on the backend, either it is number + of bytes, or it can be number of registers. */ + unsigned int va_list_gpr_size : 8; + + /* Number of units of floating point registers that need saving in stdarg + function. */ + unsigned int va_list_fpr_size : 8; }; +/* If va_list_[gf]pr_size is set to this, it means we don't know how + many units need to be saved. */ +#define VA_LIST_MAX_GPR_SIZE 255 +#define VA_LIST_MAX_FPR_SIZE 255 + /* The function currently being compiled. */ extern GTY(()) struct function *cfun; @@ -502,10 +487,8 @@ extern int trampolines_created; #define current_function_returns_pointer (cfun->returns_pointer) #define current_function_calls_setjmp (cfun->calls_setjmp) #define current_function_calls_alloca (cfun->calls_alloca) -#define current_function_calls_longjmp (cfun->calls_longjmp) +#define current_function_accesses_prior_frames (cfun->accesses_prior_frames) #define current_function_calls_eh_return (cfun->calls_eh_return) -#define current_function_has_computed_jump (cfun->has_computed_jump) -#define current_function_contains_functions (cfun->contains_functions) #define current_function_is_thunk (cfun->is_thunk) #define current_function_args_info (cfun->args_info) #define current_function_args_size (cfun->args_size) @@ -515,7 +498,6 @@ extern int trampolines_created; #define current_function_stdarg (cfun->stdarg) #define current_function_internal_arg_pointer (cfun->internal_arg_pointer) #define current_function_return_rtx (cfun->return_rtx) -#define current_function_instrument_entry_exit (cfun->instrument_entry_exit) #define current_function_profile (cfun->profile) #define current_function_funcdef_no (cfun->funcdef_no) #define current_function_limit_stack (cfun->limit_stack) @@ -525,34 +507,22 @@ extern int trampolines_created; #define current_function_has_nonlocal_label (cfun->has_nonlocal_label) #define current_function_has_nonlocal_goto (cfun->has_nonlocal_goto) -#define max_parm_reg (cfun->x_max_parm_reg) -#define parm_reg_stack_loc (cfun->x_parm_reg_stack_loc) -#define cleanup_label (cfun->x_cleanup_label) #define return_label (cfun->x_return_label) #define naked_return_label (cfun->x_naked_return_label) -#define save_expr_regs (cfun->x_save_expr_regs) #define stack_slot_list (cfun->x_stack_slot_list) #define parm_birth_insn (cfun->x_parm_birth_insn) #define frame_offset (cfun->x_frame_offset) #define tail_recursion_reentry (cfun->x_tail_recursion_reentry) #define arg_pointer_save_area (cfun->x_arg_pointer_save_area) -#define rtl_expr_chain (cfun->x_rtl_expr_chain) -#define function_call_count (cfun->x_function_call_count) #define used_temp_slots (cfun->x_used_temp_slots) #define avail_temp_slots (cfun->x_avail_temp_slots) #define temp_slot_level (cfun->x_temp_slot_level) -#define target_temp_slot_level (cfun->x_target_temp_slot_level) -#define var_temp_slot_level (cfun->x_var_temp_slot_level) -#define nonlocal_labels (cfun->x_nonlocal_labels) #define nonlocal_goto_handler_labels (cfun->x_nonlocal_goto_handler_labels) /* Given a function decl for a containing function, return the `struct function' for it. */ struct function *find_function_data (tree); -/* Set NOTE_BLOCK for each block note in the current function. */ -extern void identify_blocks (void); - /* Identify BLOCKs referenced by more than one NOTE_INSN_BLOCK_{BEG,END}, and create duplicate blocks. */ extern void reorder_blocks (void); @@ -572,15 +542,12 @@ extern void free_block_changes (void); This size counts from zero. It is not rounded to STACK_BOUNDARY; the caller may have to do that. */ extern HOST_WIDE_INT get_frame_size (void); -/* Likewise, but for a different than the current function. */ -extern HOST_WIDE_INT get_func_frame_size (struct function *); /* A pointer to a function to create target specific, per-function data structures. */ extern struct machine_function * (*init_machine_status) (void); /* Save and restore status information for a nested function. */ -extern void restore_emit_status (struct function *); extern void free_after_parsing (struct function *); extern void free_after_compilation (struct function *); @@ -600,9 +567,11 @@ extern void instantiate_virtual_regs (void); /* Returns the name of the current function. */ extern const char *current_function_name (void); -/* Called once, at initialization, to initialize function.c. */ -extern void init_function_once (void); - extern void do_warn_unused_parameter (tree); +extern bool pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode, + tree, bool); +extern bool reference_callee_copied (CUMULATIVE_ARGS *, enum machine_mode, + tree, bool); + #endif /* GCC_FUNCTION_H */