except.h File Reference

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Data Structures
struct	eh_landing_pad_d
struct	eh_catch_d
struct	eh_region_d
union	eh_region_d::eh_region_u
struct	eh_region_d::eh_region_u::eh_region_u_try
struct	eh_region_d::eh_region_u::eh_region_u_allowed
struct	eh_region_d::eh_region_u::eh_region_u_must_not_throw
struct	eh_status
union	eh_status::eh_status_u
struct	throw_stmt_node

Macros
#define	FOR_ALL_EH_REGION_AT(R, START)
#define	FOR_ALL_EH_REGION_FN(R, FN)
#define	FOR_ALL_EH_REGION(R)

Typedefs
typedef struct eh_landing_pad_d *	eh_landing_pad
typedef struct eh_catch_d *	eh_catch
typedef struct eh_region_d *	eh_region
typedef tree(*	duplicate_eh_regions_map) (tree, void *)

Enumerations
enum	eh_region_type { ERT_CLEANUP , ERT_TRY , ERT_ALLOWED_EXCEPTIONS , ERT_MUST_NOT_THROW }
enum	eh_personality_kind { eh_personality_none , eh_personality_any , eh_personality_lang }

Functions
void	for_each_eh_label (void(*)(rtx))
void	init_eh_for_function (void)
void	remove_eh_landing_pad (eh_landing_pad)
void	remove_eh_handler (eh_region)
void	remove_unreachable_eh_regions (sbitmap)
bool	current_function_has_exception_handlers (void)
void	output_function_exception_table (int)
rtx	expand_builtin_eh_pointer (tree)
rtx	expand_builtin_eh_filter (tree)
rtx	expand_builtin_eh_copy_values (tree)
void	expand_builtin_unwind_init (void)
rtx	expand_builtin_eh_return_data_regno (tree)
rtx	expand_builtin_extract_return_addr (tree)
void	expand_builtin_init_dwarf_reg_sizes (tree)
rtx	expand_builtin_frob_return_addr (tree)
rtx	expand_builtin_dwarf_sp_column (void)
void	expand_builtin_eh_return (tree, tree)
void	expand_eh_return (void)
rtx	expand_builtin_extend_pointer (tree)
hash_map< void *, void * > *	duplicate_eh_regions (struct function *, eh_region, int, duplicate_eh_regions_map, void *)
void	sjlj_emit_function_exit_after (rtx_insn *)
void	update_sjlj_context (void)
eh_region	gen_eh_region_cleanup (eh_region)
eh_region	gen_eh_region_try (eh_region)
eh_region	gen_eh_region_allowed (eh_region, tree)
eh_region	gen_eh_region_must_not_throw (eh_region)
eh_catch	gen_eh_region_catch (eh_region, tree)
eh_landing_pad	gen_eh_landing_pad (eh_region)
eh_region	get_eh_region_from_number_fn (struct function *, int)
eh_region	get_eh_region_from_number (int)
eh_landing_pad	get_eh_landing_pad_from_number_fn (struct function *, int)
eh_landing_pad	get_eh_landing_pad_from_number (int)
eh_region	get_eh_region_from_lp_number_fn (struct function *, int)
eh_region	get_eh_region_from_lp_number (int)
eh_region	eh_region_outermost (struct function *, eh_region, eh_region)
void	make_reg_eh_region_note (rtx_insn *insn, int ecf_flags, int lp_nr)
void	make_reg_eh_region_note_nothrow_nononlocal (rtx_insn *)
void	verify_eh_tree (struct function *)
void	dump_eh_tree (FILE *, struct function *)
void	debug_eh_tree (struct function *)
void	add_type_for_runtime (tree)
tree	lookup_type_for_runtime (tree)
void	assign_filter_values (void)
eh_region	get_eh_region_from_rtx (const_rtx)
eh_landing_pad	get_eh_landing_pad_from_rtx (const_rtx)
void	finish_eh_generation (void)
hash_map< gimple *, int > *	get_eh_throw_stmt_table (struct function *)
void	set_eh_throw_stmt_table (function *, hash_map< gimple *, int > *)
enum eh_personality_kind	function_needs_eh_personality (struct function *)
eh_region	ehr_next (eh_region r, eh_region start)

Macro Definition Documentation

FOR_ALL_EH_REGION

#define FOR_ALL_EH_REGION

(

R

)

Value:

FOR_ALL_EH_REGION_FN (R, cfun)

Referenced by cleanup_dead_labels_eh().

FOR_ALL_EH_REGION_AT

#define FOR_ALL_EH_REGION_AT	(		R,
			START )

Value:

  for ((R) = (START); (R) != NULL; (R) = ehr_next (R, START))

FOR_ALL_EH_REGION_FN

#define FOR_ALL_EH_REGION_FN	(		R,
			FN )

Value:

  for ((R) = (FN)->eh->region_tree; (R) != NULL; (R) = ehr_next (R, NULL))

Referenced by function_needs_eh_personality().

Typedef Documentation

duplicate_eh_regions_map

typedef tree(* duplicate_eh_regions_map) (tree, void *)

eh_catch

typedef struct eh_catch_d* eh_catch

eh_landing_pad

typedef struct eh_landing_pad_d* eh_landing_pad

eh_region

typedef struct eh_region_d* eh_region

Enumeration Type Documentation

eh_personality_kind

enum eh_personality_kind

Enumerator
eh_personality_none
eh_personality_any
eh_personality_lang

eh_region_type

enum eh_region_type

The type of an exception region.   

Enumerator
ERT_CLEANUP
ERT_TRY
ERT_ALLOWED_EXCEPTIONS
ERT_MUST_NOT_THROW

Function Documentation

add_type_for_runtime()

void add_type_for_runtime ( tree type )

extern

References lang_hooks::eh_runtime_type, TREE_CODE, and type_to_runtime_map.

Referenced by gen_eh_region_allowed(), gen_eh_region_catch(), input_eh_region(), and lto_input_eh_catch_list().

assign_filter_values()

void assign_filter_values ( void )

extern

Generate the action filter values to be used for CATCH and
ALLOWED_EXCEPTIONS regions.  When using dwarf2 exception regions,
we use lots of landing pads, and so every type or list can share
the same filter value, which saves table space.   

References add_ehspec_entry(), add_ttypes_entry(), build_int_cst(), cfun, ERT_ALLOWED_EXCEPTIONS, ERT_TRY, eh_catch_d::filter_list, i, integer_type_node, eh_catch_d::next_catch, NULL, NULL_TREE, r, targetm, TREE_CHAIN, tree_cons(), TREE_VALUE, eh_catch_d::type_list, vec_alloc(), and vec_safe_iterate().

current_function_has_exception_handlers()

bool current_function_has_exception_handlers ( void )

extern

Returns true if the current function has exception handling regions.   

References cfun, and NULL.

Referenced by suitable_for_tail_call_opt_p().

debug_eh_tree()

void debug_eh_tree

(

struct function *

fn

)

Dump the EH tree for FN on stderr.   

References dump_eh_tree().

dump_eh_tree()

void dump_eh_tree ( FILE * out, struct function * fun )

extern

Dump EH information to OUT.   

References current_ir_type(), function::eh, ERT_ALLOWED_EXCEPTIONS, ERT_CLEANUP, ERT_MUST_NOT_THROW, ERT_TRY, fputc(), i, eh_landing_pad_d::index, INSN_UID(), IR_GIMPLE, eh_catch_d::label, label_rtx(), eh_landing_pad_d::landing_pad, eh_catch_d::next_catch, eh_landing_pad_d::next_lp, NOTE_P, NULL, eh_landing_pad_d::post_landing_pad, print_generic_expr(), eh_status::region_tree, and eh_catch_d::type_list.

Referenced by debug_eh_tree(), dump_function_to_file(), remove_unreachable_handlers(), and verify_eh_tree().

duplicate_eh_regions()

hash_map< void *, void * > * duplicate_eh_regions ( struct function * ifun, eh_region copy_region, int outer_lp, duplicate_eh_regions_map map, void * map_data )

extern

Duplicate the EH regions from IFUN rooted at COPY_REGION into
the current function and root the tree below OUTER_REGION.
The special case of COPY_REGION of NULL means all regions.
Remap labels using MAP/MAP_DATA callback.  Return a pointer map
that allows the caller to remap uses of both EH regions and
EH landing pads.   

References cfun, duplicate_eh_regions_1(), function::eh, get_eh_region_from_lp_number_fn(), map, eh_region_d::next_peer, r, eh_status::region_tree, and verify_eh_tree().

Referenced by copy_cfg_body(), and move_sese_region_to_fn().

eh_region_outermost()

eh_region eh_region_outermost ( struct function * ifun, eh_region region_a, eh_region region_b )

extern

Return the region that is outer to both REGION_A and REGION_B in IFUN.   

References bitmap_bit_p, bitmap_clear(), bitmap_set_bit, function::eh, gcc_assert, eh_region_d::index, eh_region_d::outer, eh_status::region_array, and eh_status::region_tree.

Referenced by find_outermost_region_in_block().

ehr_next()

eh_region ehr_next ( eh_region r, eh_region start )

inline

Pre-order iteration within the eh_region tree.   

References eh_region_d::inner, eh_region_d::next_peer, NULL, and r.

expand_builtin_dwarf_sp_column()

rtx expand_builtin_dwarf_sp_column ( void )

extern

Hook used by __throw.   

References DWARF2_FRAME_REG_OUT, DWARF_FRAME_REGNUM, and GEN_INT.

Referenced by expand_builtin().

expand_builtin_eh_copy_values()

rtx expand_builtin_eh_copy_values ( tree exp )

extern

Copy the exc_ptr and filter values from one landing pad's registers
to another.  This is used to inline the resx statement.   

References CALL_EXPR_ARG, const0_rtx, emit_move_insn(), eh_region_d::exc_ptr_reg, exp(), expand_builtin_eh_common(), eh_region_d::filter_reg, gen_reg_rtx(), NULL, ptr_mode, and targetm.

Referenced by expand_builtin().

expand_builtin_eh_filter()

rtx expand_builtin_eh_filter ( tree exp )

extern

Expand to the filter value from the given eh region.   

References CALL_EXPR_ARG, exp(), expand_builtin_eh_common(), eh_region_d::filter_reg, gen_reg_rtx(), NULL, and targetm.

Referenced by expand_builtin().

expand_builtin_eh_pointer()

rtx expand_builtin_eh_pointer ( tree exp )

extern

Expand to the exc_ptr value from the given eh region.   

References CALL_EXPR_ARG, eh_region_d::exc_ptr_reg, exp(), expand_builtin_eh_common(), gen_reg_rtx(), NULL, and ptr_mode.

Referenced by expand_builtin().

expand_builtin_eh_return()

void expand_builtin_eh_return ( tree stackadj_tree, tree handler_tree )

extern

Set up the epilogue with the magic bits we'll need to return to the
exception handler.   

References convert_memory_address, copy_addr_to_reg(), crtl, emit_jump(), emit_move_insn(), expand_expr(), EXPAND_NORMAL, and gen_label_rtx().

Referenced by expand_builtin().

expand_builtin_eh_return_data_regno()

rtx expand_builtin_eh_return_data_regno ( tree exp )

extern

Map a non-negative number to an eh return data register number; expands
to -1 if no return data register is associated with the input number.
At least the inputs 0 and 1 must be mapped; the target may provide more.   

References CALL_EXPR_ARG, constm1_rtx, DEBUGGER_REGNO, DWARF_FRAME_REGNUM, EH_RETURN_DATA_REGNO, error(), exp(), GEN_INT, INVALID_REGNUM, TREE_CODE, tree_fits_uhwi_p(), and tree_to_uhwi().

Referenced by expand_builtin().

expand_builtin_extend_pointer()

rtx expand_builtin_extend_pointer ( tree addr_tree )

extern

Convert a ptr_mode address ADDR_TREE to a Pmode address controlled by
POINTERS_EXTEND_UNSIGNED and return it.   

References convert_modes(), expand_expr(), EXPAND_NORMAL, NULL_RTX, ptr_mode, and targetm.

Referenced by expand_builtin().

expand_builtin_extract_return_addr()

rtx expand_builtin_extract_return_addr ( tree addr_tree )

extern

Given a value extracted from the return address register or stack slot,
return the actual address encoded in that value.   

References convert_memory_address, convert_to_mode(), expand_and(), expand_expr(), EXPAND_NORMAL, GET_MODE, MASK_RETURN_ADDR, NULL_RTX, plus_constant(), and RETURN_ADDR_OFFSET.

Referenced by expand_builtin().

expand_builtin_frob_return_addr()

rtx expand_builtin_frob_return_addr ( tree addr_tree )

extern

Given an actual address in addr_tree, do any necessary encoding
and return the value to be stored in the return address register or
stack slot so the epilogue will return to that address.   

References convert_memory_address, expand_expr(), EXPAND_NORMAL, force_reg(), NULL_RTX, plus_constant(), ptr_mode, and RETURN_ADDR_OFFSET.

Referenced by expand_builtin().

expand_builtin_init_dwarf_reg_sizes()

void expand_builtin_init_dwarf_reg_sizes ( tree address )

extern

Generate code to initialize the dwarf register size table located
at the provided ADDRESS.   

References char_type_node, DWARF_FRAME_RETURN_COLUMN, expand_normal(), gen_rtx_MEM(), gen_rtx_REG(), GET_MODE, i, init_one_dwarf_reg_size(), init_return_column_size(), init_one_dwarf_reg_state::processed_regno, REGNO, SCALAR_INT_TYPE_MODE, si, targetm, init_one_dwarf_reg_state::wrote_return_column, XVECEXP, and XVECLEN.

Referenced by expand_builtin().

expand_builtin_unwind_init()

void expand_builtin_unwind_init ( void )

extern

Do any necessary initialization to access arbitrary stack frames.
On the SPARC, this means flushing the register windows.   

References crtl, and SETUP_FRAME_ADDRESSES.

Referenced by expand_builtin().

expand_eh_return()

void expand_eh_return ( void )

extern

Expand __builtin_eh_return.  This exit path from the function loads up
the eh return data registers, adjusts the stack, and branches to a
given PC other than the normal return address.   

References clobber_return_register(), const0_rtx, const1_rtx, crtl, EH_RETURN_HANDLER_RTX, emit_clobber(), emit_insn(), emit_jump(), emit_label(), emit_move_insn(), error(), gen_label_rtx(), REG_P, and targetm.

Referenced by expand_function_end().

finish_eh_generation()

void finish_eh_generation ( void )

extern

After initial rtl generation, call back to finish generating
exception support code.   

References BB_END, BB_HEAD, BLOCK_FOR_INSN(), break_superblocks(), CALL_P, cfun, commit_edge_insertions(), dw2_build_landing_pads(), ENTRY_BLOCK_PTR_FOR_FN, FOR_EACH_BB_FN, FOR_EACH_EDGE, gcc_assert, get_eh_landing_pad_from_rtx(), global_options, insns, label_rtx(), eh_landing_pad_d::landing_pad, NULL, eh_landing_pad_d::post_landing_pad, redirect_edge_succ(), single_succ_edge(), sjlj_build_landing_pads(), basic_block_def::succs, and UI_SJLJ.

for_each_eh_label()

void for_each_eh_label ( void(* callback )(rtx) )

extern

Invokes CALLBACK for every exception handler label.  Only used by old
loop hackery; should not be used by new code.   

Invokes CALLBACK for every exception handler landing pad label.
Only used by reload hackery; should not be used by new code.   

References cfun, i, LABEL_P, eh_landing_pad_d::landing_pad, and vec_safe_iterate().

Referenced by set_initial_label_offsets().

function_needs_eh_personality()

enum eh_personality_kind function_needs_eh_personality ( struct function * fn )

extern

Determine if the function needs an EH personality function.   

References eh_personality_any, eh_personality_lang, eh_personality_none, ERT_ALLOWED_EXCEPTIONS, ERT_CLEANUP, ERT_MUST_NOT_THROW, ERT_TRY, FOR_ALL_EH_REGION_FN, and i.

Referenced by cgraph_node::add_new_function(), get_personality_function(), and sjlj_build_landing_pads().

gen_eh_landing_pad()

eh_landing_pad gen_eh_landing_pad ( eh_region region )

extern

References cfun, ggc_cleared_alloc(), eh_landing_pad_d::index, eh_region_d::landing_pads, eh_landing_pad_d::next_lp, eh_landing_pad_d::region, vec_safe_length(), and vec_safe_push().

Referenced by duplicate_eh_regions_1(), dw2_fix_up_crossing_landing_pad(), emit_post_landing_pad(), gsi_insert_finally_seq_after_call(), record_stmt_eh_region(), redirect_eh_edge_1(), and sjlj_fix_up_crossing_landing_pad().

gen_eh_region_allowed()

eh_region gen_eh_region_allowed ( eh_region outer, tree allowed )

extern

References add_type_for_runtime(), eh_region_d::eh_region_u::allowed, ERT_ALLOWED_EXCEPTIONS, gen_eh_region(), TREE_CHAIN, TREE_VALUE, eh_region_d::eh_region_u::eh_region_u_allowed::type_list, and eh_region_d::u.

Referenced by lower_eh_filter().

gen_eh_region_catch()

eh_catch gen_eh_region_catch ( eh_region t, tree type_or_list )

extern

References add_type_for_runtime(), eh_region_d::eh_region_u::eh_try, ERT_TRY, eh_region_d::eh_region_u::eh_region_u_try::first_catch, gcc_assert, ggc_cleared_alloc(), eh_region_d::eh_region_u::eh_region_u_try::last_catch, eh_catch_d::next_catch, NULL_TREE, eh_catch_d::prev_catch, TREE_CHAIN, TREE_CODE, tree_cons(), TREE_VALUE, eh_region_d::type, eh_catch_d::type_list, and eh_region_d::u.

Referenced by duplicate_eh_regions_1(), and lower_catch().

gen_eh_region_cleanup()

eh_region gen_eh_region_cleanup ( eh_region outer )

extern

References ERT_CLEANUP, and gen_eh_region().

Referenced by gsi_insert_finally_seq_after_call(), lower_cleanup(), and lower_try_finally().

gen_eh_region_must_not_throw()

eh_region gen_eh_region_must_not_throw ( eh_region outer )

extern

References ERT_MUST_NOT_THROW, and gen_eh_region().

Referenced by lower_eh_must_not_throw().

gen_eh_region_try()

eh_region gen_eh_region_try ( eh_region outer )

extern

References ERT_TRY, and gen_eh_region().

Referenced by lower_catch().

get_eh_landing_pad_from_number()

eh_landing_pad get_eh_landing_pad_from_number ( int i )

extern

References cfun, get_eh_landing_pad_from_number_fn(), and i.

Referenced by gimple_merge_blocks(), lower_resx(), make_eh_edge(), redirect_eh_edge_1(), verify_eh_edges(), and verify_gimple_label().

get_eh_landing_pad_from_number_fn()

eh_landing_pad get_eh_landing_pad_from_number_fn ( struct function * ifun, int i )

extern

References function::eh, i, and eh_status::lp_array.

Referenced by get_eh_landing_pad_from_number().

get_eh_landing_pad_from_rtx()

eh_landing_pad get_eh_landing_pad_from_rtx ( const_rtx insn )

extern

Return the landing pad to which INSN may go, or NULL if it does not
have a reachable landing pad within this function.   

References get_eh_region_and_lp_from_rtx(), and r.

Referenced by can_throw_internal(), create_trace_edges(), finish_eh_generation(), and rtl_make_eh_edge().

get_eh_region_from_lp_number()

eh_region get_eh_region_from_lp_number ( int i )

extern

References cfun, get_eh_region_from_lp_number_fn(), and i.

Referenced by cleanup_empty_eh(), cleanup_empty_eh_unsplit(), lower_resx(), mark_reachable_handlers(), and unsplit_eh().

get_eh_region_from_lp_number_fn()

eh_region get_eh_region_from_lp_number_fn ( struct function * ifun, int i )

extern

References function::eh, i, eh_status::lp_array, NULL, eh_landing_pad_d::region, and eh_status::region_array.

Referenced by duplicate_eh_regions(), find_outermost_region_in_block(), and get_eh_region_from_lp_number().

get_eh_region_from_number()

eh_region get_eh_region_from_number ( int i )

extern

References cfun, get_eh_region_from_number_fn(), and i.

Referenced by lower_eh_dispatch(), lower_resx(), make_eh_dispatch_edges(), move_stmt_eh_region_nr(), redirect_eh_dispatch_edge(), and verify_eh_dispatch_edge().

get_eh_region_from_number_fn()

eh_region get_eh_region_from_number_fn ( struct function * ifun, int i )

extern

References function::eh, i, and eh_status::region_array.

Referenced by get_eh_region_from_number(), and remap_eh_region_nr().

get_eh_region_from_rtx()

eh_region get_eh_region_from_rtx ( const_rtx insn )

extern

Return the region to which INSN may go, or NULL if it does not
have a reachable region within this function.   

References get_eh_region_and_lp_from_rtx(), and r.

Referenced by process_bb_node_lives().

get_eh_throw_stmt_table()

hash_map< gimple *, int > * get_eh_throw_stmt_table ( struct function * fun )

extern

References function::eh, and eh_status::throw_stmt_table.

Referenced by add_stmt_to_eh_lp_fn(), remove_stmt_from_eh_lp_fn(), and verify_gimple_in_cfg().

init_eh_for_function()

void init_eh_for_function ( void )

extern

References cfun, ggc_cleared_alloc(), and vec_safe_push().

Referenced by allocate_struct_function(), initialize_cfun(), and move_sese_region_to_fn().

lookup_type_for_runtime()

tree lookup_type_for_runtime ( tree type )

extern

References TREE_CODE, type(), and type_to_runtime_map.

Referenced by output_ttype(), and record_type_list().

make_reg_eh_region_note()

void make_reg_eh_region_note ( rtx_insn * insn, int ecf_flags, int lp_nr )

extern

Create the REG_EH_REGION note for INSN, given its ECF_FLAGS for a
 call insn.

 At the gimple level, we use LP_NR
     > 0 : The statement transfers to landing pad LP_NR
     = 0 : The statement is outside any EH region
     < 0 : The statement is within MUST_NOT_THROW region -LP_NR.

 At the rtl level, we use LP_NR
     > 0 : The insn transfers to landing pad LP_NR
     = 0 : The insn cannot throw
     < 0 : The insn is within MUST_NOT_THROW region -LP_NR
     = INT_MIN : The insn cannot throw or execute a nonlocal-goto.
     missing note: The insn is outside any EH region.

??? This difference probably ought to be avoided.  We could stand
to record nothrow for arbitrary gimple statements, and so avoid
some moderately complex lookups in stmt_could_throw_p.  Perhaps
NOTHROW should be mapped on both sides to INT_MIN.  Perhaps the
no-nonlocal-goto property should be recorded elsewhere as a bit
on the call_insn directly.  Perhaps we should make more use of
attaching the trees to call_insns (reachable via symbol_ref in
direct call cases) and just pull the data out of the trees.   

References add_reg_note(), const0_rtx, ECF_NOTHROW, and GEN_INT.

Referenced by emit_call_1(), and expand_gimple_stmt().

make_reg_eh_region_note_nothrow_nononlocal()

void make_reg_eh_region_note_nothrow_nononlocal ( rtx_insn * insn )

extern

Create a REG_EH_REGION note for a CALL_INSN that cannot throw
nor perform a non-local goto.  Replace the region note if it
already exists.   

References add_reg_note(), find_reg_note(), GEN_INT, INT_MIN, NULL_RTX, and XEXP.

Referenced by emit_libcall_block_1(), and emit_library_call_value_1().

output_function_exception_table()

void output_function_exception_table ( int section )

extern

Output an exception table for the current function according to SECTION,
switching back and forth from the function section appropriately.

If the function has been partitioned into hot and cold parts, value 0 for
SECTION refers to the table associated with the hot part while value 1
refers to the table associated with the cold part.  If the function has
not been partitioned, value 0 refers to the single exception table.   

References asm_out_file, assemble_external_libcall(), crtl, current_function_decl, current_function_section(), get_fnname_from_decl(), get_personality_function(), global_options, output_one_function_exception_table(), switch_to_exception_section(), switch_to_section(), targetm, and UI_NONE.

Referenced by final_scan_insn_1(), and rest_of_handle_final().

remove_eh_handler()

void remove_eh_handler ( eh_region region )

extern

Splice a single EH region REGION from the region tree.

To unlink REGION, we need to find the pointer to it with a relatively
expensive search in REGION's outer region.  If you are going to
remove a number of handlers, using remove_unreachable_eh_regions may
be a better option.   

References cfun, eh_region_d::inner, eh_region_d::next_peer, eh_region_d::outer, and remove_eh_handler_splicer().

remove_eh_landing_pad()

void remove_eh_landing_pad ( eh_landing_pad lp )

extern

This section handles removing dead code for flow.   

References cfun, EH_LANDING_PAD_NR, eh_landing_pad_d::index, eh_region_d::landing_pads, eh_landing_pad_d::next_lp, NULL, eh_landing_pad_d::post_landing_pad, and eh_landing_pad_d::region.

Referenced by cleanup_empty_eh(), lower_resx(), redirect_eh_edge_1(), and remove_unreachable_handlers().

remove_unreachable_eh_regions()

void remove_unreachable_eh_regions ( sbitmap r_reachable )

extern

Splice all EH regions *not* marked in R_REACHABLE from the region tree.
Do this by traversing the EH tree top-down and splice out regions that
are not marked.  By removing regions from the leaves, we avoid costly
searches in the region tree.   

References cfun, and remove_unreachable_eh_regions_worker().

Referenced by remove_unreachable_handlers(), and remove_unreachable_handlers_no_lp().

set_eh_throw_stmt_table()

void set_eh_throw_stmt_table ( function * fun, hash_map< gimple *, int > * table )

extern

References function::eh, table, and eh_status::throw_stmt_table.

Referenced by add_stmt_to_eh_lp_fn().

sjlj_emit_function_exit_after()

void sjlj_emit_function_exit_after ( rtx_insn * after )

extern

Call back from expand_function_end to know where we should put
the call to unwind_sjlj_unregister_libfunc if needed.   

References crtl.

Referenced by expand_function_end().

update_sjlj_context()

void update_sjlj_context ( void )

extern

Update the sjlj function context.  This function should be called
whenever we allocate or deallocate dynamic stack space.   

References emit_note().

Referenced by record_new_stack_level().

verify_eh_tree()

void verify_eh_tree ( struct function * fun )

extern

Verify invariants on EH datastructures.   

References dump_eh_tree(), function::eh, error(), i, eh_landing_pad_d::index, eh_region_d::inner, internal_error(), eh_status::lp_array, eh_landing_pad_d::next_lp, eh_region_d::next_peer, NULL, eh_region_d::outer, r, eh_landing_pad_d::region, eh_status::region_array, eh_status::region_tree, and vec_safe_iterate().

Referenced by duplicate_eh_regions(), and remove_unreachable_handlers().