/* Implements exception handling.
- Copyright (C) 1989-2014 Free Software Foundation, Inc.
+ Copyright (C) 1989-2020 Free Software Foundation, Inc.
Contributed by Mike Stump <mrs@cygnus.com>.
This file is part of GCC.
the compilation process:
In the beginning, in the front end, we have the GENERIC trees
- TRY_CATCH_EXPR, TRY_FINALLY_EXPR, WITH_CLEANUP_EXPR,
+ TRY_CATCH_EXPR, TRY_FINALLY_EXPR, EH_ELSE_EXPR, WITH_CLEANUP_EXPR,
CLEANUP_POINT_EXPR, CATCH_EXPR, and EH_FILTER_EXPR.
- During initial gimplification (gimplify.c) these are lowered
- to the GIMPLE_TRY, GIMPLE_CATCH, and GIMPLE_EH_FILTER nodes.
- The WITH_CLEANUP_EXPR and CLEANUP_POINT_EXPR nodes are converted
- into GIMPLE_TRY_FINALLY nodes; the others are a more direct 1-1
- conversion.
+ During initial gimplification (gimplify.c) these are lowered to the
+ GIMPLE_TRY, GIMPLE_CATCH, GIMPLE_EH_ELSE, and GIMPLE_EH_FILTER
+ nodes. The WITH_CLEANUP_EXPR and CLEANUP_POINT_EXPR nodes are
+ converted into GIMPLE_TRY_FINALLY nodes; the others are a more
+ direct 1-1 conversion.
During pass_lower_eh (tree-eh.c) we record the nested structure
of the TRY nodes in EH_REGION nodes in CFUN->EH->REGION_TREE.
#include "config.h"
#include "system.h"
#include "coretypes.h"
-#include "tm.h"
+#include "backend.h"
+#include "target.h"
#include "rtl.h"
#include "tree.h"
+#include "cfghooks.h"
+#include "tree-pass.h"
+#include "memmodel.h"
+#include "tm_p.h"
#include "stringpool.h"
+#include "expmed.h"
+#include "optabs.h"
+#include "emit-rtl.h"
+#include "cgraph.h"
+#include "diagnostic.h"
+#include "fold-const.h"
#include "stor-layout.h"
-#include "flags.h"
-#include "function.h"
+#include "explow.h"
+#include "stmt.h"
#include "expr.h"
+#include "calls.h"
#include "libfuncs.h"
-#include "insn-config.h"
#include "except.h"
-#include "hard-reg-set.h"
#include "output.h"
#include "dwarf2asm.h"
#include "dwarf2out.h"
-#include "dwarf2.h"
-#include "toplev.h"
-#include "hash-table.h"
-#include "intl.h"
-#include "tm_p.h"
-#include "target.h"
#include "common/common-target.h"
#include "langhooks.h"
-#include "cgraph.h"
-#include "diagnostic.h"
+#include "cfgrtl.h"
#include "tree-pretty-print.h"
-#include "tree-pass.h"
-#include "pointer-set.h"
#include "cfgloop.h"
#include "builtins.h"
-
-/* Provide defaults for stuff that may not be defined when using
- sjlj exceptions. */
-#ifndef EH_RETURN_DATA_REGNO
-#define EH_RETURN_DATA_REGNO(N) INVALID_REGNUM
-#endif
+#include "tree-hash-traits.h"
static GTY(()) int call_site_base;
-static GTY ((param_is (union tree_node)))
- htab_t type_to_runtime_map;
+
+static GTY(()) hash_map<tree_hash, tree> *type_to_runtime_map;
+
+static GTY(()) tree setjmp_fn;
/* Describe the SjLj_Function_Context structure. */
static GTY(()) tree sjlj_fc_type_node;
/* Hashtable helpers. */
-struct action_record_hasher :
typed_free_remove <action_record>
+struct action_record_hasher :
free_ptr_hash <action_record>
{
- typedef action_record value_type;
- typedef action_record compare_type;
- static inline hashval_t hash (const value_type *);
- static inline bool equal (const value_type *, const compare_type *);
+ static inline hashval_t hash (const action_record *);
+ static inline bool equal (const action_record *, const action_record *);
};
inline hashval_t
-action_record_hasher::hash (const value_type *entry)
+action_record_hasher::hash (const action_record *entry)
{
return entry->next * 1009 + entry->filter;
}
inline bool
-action_record_hasher::equal (const value_type *entry, const compare_type *data)
+action_record_hasher::equal (const action_record *entry,
+ const action_record *data)
{
return entry->filter == data->filter && entry->next == data->next;
}
static bool get_eh_region_and_lp_from_rtx (const_rtx, eh_region *,
eh_landing_pad *);
-static int t2r_eq (const void *, const void *);
-static hashval_t t2r_hash (const void *);
-
static void dw2_build_landing_pads (void);
static int collect_one_action_chain (action_hash_type *, eh_region);
static void push_uleb128 (vec<uchar, va_gc> **, unsigned int);
static void push_sleb128 (vec<uchar, va_gc> **, int);
-#ifndef HAVE_AS_LEB128
static int dw2_size_of_call_site_table (int);
static int sjlj_size_of_call_site_table (void);
-#endif
static void dw2_output_call_site_table (int, int);
static void sjlj_output_call_site_table (void);
if (! flag_exceptions)
return;
- type_to_runtime_map = htab_create_ggc (31, t2r_hash, t2r_eq, NULL);
+ type_to_runtime_map = hash_map<tree_hash, tree>::create_ggc (31);
/* Create the SjLj_Function_Context structure. This should match
the definition in unwind-sjlj.c. */
#ifdef DONT_USE_BUILTIN_SETJMP
/* We don't know what the alignment requirements of the
runtime's jmp_buf has. Overestimate. */
- DECL_ALIGN (f_jbuf) = BIGGEST_ALIGNMENT;
+ SET_DECL_ALIGN (f_jbuf, BIGGEST_ALIGNMENT);
DECL_USER_ALIGN (f_jbuf) = 1;
#endif
DECL_FIELD_CONTEXT (f_jbuf) = sjlj_fc_type_node;
sjlj_fc_jbuf_ofs
= (tree_to_uhwi (DECL_FIELD_OFFSET (f_jbuf))
+ tree_to_uhwi (DECL_FIELD_BIT_OFFSET (f_jbuf)) / BITS_PER_UNIT);
+
+#ifdef DONT_USE_BUILTIN_SETJMP
+ tmp = build_function_type_list (integer_type_node, TREE_TYPE (f_jbuf),
+ NULL);
+ setjmp_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL,
+ get_identifier ("setjmp"), tmp);
+ TREE_PUBLIC (setjmp_fn) = 1;
+ DECL_EXTERNAL (setjmp_fn) = 1;
+ DECL_ASSEMBLER_NAME (setjmp_fn);
+#endif
}
}
{
duplicate_eh_regions_map label_map;
void *label_map_data;
- struct pointer_map_t *eh_map;
+ hash_map<void *, void *> *eh_map;
};
static void
{
eh_landing_pad old_lp, new_lp;
eh_region new_r;
- void **slot;
new_r = gen_eh_region (old_r->type, outer);
- slot = pointer_map_insert (data->eh_map, (void *)old_r);
- gcc_assert (*slot == NULL);
- *slot = (void *)new_r;
+ gcc_assert (!data->eh_map->put (old_r, new_r));
switch (old_r->type)
{
continue;
new_lp = gen_eh_landing_pad (new_r);
- slot = pointer_map_insert (data->eh_map, (void *)old_lp);
- gcc_assert (*slot == NULL);
- *slot = (void *)new_lp;
+ gcc_assert (!data->eh_map->put (old_lp, new_lp));
new_lp->post_landing_pad
= data->label_map (old_lp->post_landing_pad, data->label_map_data);
that allows the caller to remap uses of both EH regions and
EH landing pads. */
-struct pointer_map_t *
+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)
struct duplicate_eh_regions_data data;
eh_region outer_region;
-#ifdef ENABLE_CHECKING
- verify_eh_tree (ifun);
-#endif
+ if (flag_checking)
+ verify_eh_tree (ifun);
data.label_map = map;
data.label_map_data = map_data;
- data.eh_map = pointer_map_create ();
+ data.eh_map = new hash_map<void *, void *>;
- outer_region = get_eh_region_from_lp_number (outer_lp);
+ outer_region = get_eh_region_from_lp_number_fn (cfun, outer_lp);
/* Copy all the regions in the subtree. */
if (copy_region)
duplicate_eh_regions_1 (&data, r, outer_region);
}
-#ifdef ENABLE_CHECKING
- verify_eh_tree (cfun);
-#endif
+ if (flag_checking)
+ verify_eh_tree (cfun);
return data.eh_map;
}
eh_region_outermost (struct function *ifun, eh_region region_a,
eh_region region_b)
{
- sbitmap b_outer;
-
gcc_assert (ifun->eh->region_array);
gcc_assert (ifun->eh->region_tree);
- b_outer = sbitmap_alloc (ifun->eh->region_array->length ());
+ auto_sbitmap b_outer (ifun->eh->region_array->length ());
bitmap_clear (b_outer);
do
}
while (region_a);
- sbitmap_free (b_outer);
return region_a;
}
\f
-static int
-t2r_eq (const void *pentry, const void *pdata)
-{
- const_tree const entry = (const_tree) pentry;
- const_tree const data = (const_tree) pdata;
-
- return TREE_PURPOSE (entry) == data;
-}
-
-static hashval_t
-t2r_hash (const void *pentry)
-{
- const_tree const entry = (const_tree) pentry;
- return TREE_HASH (TREE_PURPOSE (entry));
-}
-
void
add_type_for_runtime (tree type)
{
- tree *slot;
-
/* If TYPE is NOP_EXPR, it means that it already is a runtime type. */
if (TREE_CODE (type) == NOP_EXPR)
return;
- slot = (tree *) htab_find_slot_with_hash (type_to_runtime_map, type,
- TREE_HASH (type), INSERT);
- if (*slot == NULL)
- {
- tree runtime = lang_hooks.eh_runtime_type (type);
- *slot = tree_cons (type, runtime, NULL_TREE);
- }
+ bool existed = false;
+ tree *slot = &type_to_runtime_map->get_or_insert (type, &existed);
+ if (!existed)
+ *slot = lang_hooks.eh_runtime_type (type);
}
tree
lookup_type_for_runtime (tree type)
{
- tree *slot;
-
/* If TYPE is NOP_EXPR, it means that it already is a runtime type. */
if (TREE_CODE (type) == NOP_EXPR)
return type;
- slot = (tree *) htab_find_slot_with_hash (type_to_runtime_map, type,
- TREE_HASH (type), NO_INSERT);
-
/* We should have always inserted the data earlier. */
- return TREE_VALUE (*slot);
+ return *type_to_runtime_map->get (type);
}
\f
/* Helper for ttypes_filter hashing. */
-struct ttypes_filter_hasher : typed_free_remove <ttypes_filter>
+struct ttypes_filter_hasher : free_ptr_hash <ttypes_filter>
{
- typedef ttypes_filter value_type;
- typedef tree_node compare_type;
- static inline hashval_t hash (const value_type *);
- static inline bool equal (const value_type *, const compare_type *);
+ typedef tree_node *compare_type;
+ static inline hashval_t hash (const ttypes_filter *);
+ static inline bool equal (const ttypes_filter *, const tree_node *);
};
/* Compare ENTRY (a ttypes_filter entry in the hash table) with DATA
(a tree) for a @TTypes type node we are thinking about adding. */
inline bool
-ttypes_filter_hasher::equal (const value_type *entry, const compare_type *data)
+ttypes_filter_hasher::equal (const ttypes_filter *entry, const tree_node *data)
{
return entry->t == data;
}
inline hashval_t
-ttypes_filter_hasher::hash (const value_type *entry)
+ttypes_filter_hasher::hash (const ttypes_filter *entry)
{
return TREE_HASH (entry->t);
}
/* Helper for ehspec hashing. */
-struct ehspec_hasher : typed_free_remove <ttypes_filter>
+struct ehspec_hasher : free_ptr_hash <ttypes_filter>
{
- typedef ttypes_filter value_type;
- typedef ttypes_filter compare_type;
- static inline hashval_t hash (const value_type *);
- static inline bool equal (const value_type *, const compare_type *);
+ static inline hashval_t hash (const ttypes_filter *);
+ static inline bool equal (const ttypes_filter *, const ttypes_filter *);
};
/* Compare ENTRY with DATA (both struct ttypes_filter) for a @TTypes
should put these in some canonical order. */
inline bool
-ehspec_hasher::equal (const value_type *entry, const compare_type *data)
+ehspec_hasher::equal (const ttypes_filter *entry, const ttypes_filter *data)
{
return type_list_equal (entry->t, data->t);
}
/* Hash function for exception specification lists. */
inline hashval_t
-ehspec_hasher::hash (const value_type *entry)
+ehspec_hasher::hash (const ttypes_filter *entry)
{
hashval_t h = 0;
tree list;
first instruction of some existing BB and return the newly
produced block. */
static basic_block
-emit_to_new_bb_before (rtx seq, rtx insn)
+emit_to_new_bb_before (rtx_insn *seq, rtx_insn *insn)
{
- rtx last;
+ rtx_insn *next, *last;
basic_block bb;
edge e;
edge_iterator ei;
force_nonfallthru (e);
else
ei_next (&ei);
- last = emit_insn_before (seq, insn);
+
+ /* Make sure to put the location of INSN or a subsequent instruction on SEQ
+ to avoid inheriting the location of the previous instruction. */
+ next = insn;
+ while (next && !NONDEBUG_INSN_P (next))
+ next = NEXT_INSN (next);
+ if (next)
+ last = emit_insn_before_setloc (seq, insn, INSN_LOCATION (next));
+ else
+ last = emit_insn_before (seq, insn);
if (BARRIER_P (last))
last = PREV_INSN (last);
bb = create_basic_block (seq, last, BLOCK_FOR_INSN (insn)->prev_bb);
at the rtl level. Emit the code required by the target at a landing
pad for the given region. */
-void
+static void
expand_dw2_landing_pad_for_region (eh_region region)
{
-#ifdef HAVE_exception_receiver
- if (HAVE_exception_receiver)
- emit_insn (gen_exception_receiver ());
+ if (targetm.have_exception_receiver ())
+ emit_insn (targetm.gen_exception_receiver ());
+ else if (targetm.have_nonlocal_goto_receiver ())
+ emit_insn (targetm.gen_nonlocal_goto_receiver ());
else
-#endif
-#ifdef HAVE_nonlocal_goto_receiver
- if (HAVE_nonlocal_goto_receiver)
- emit_insn (gen_nonlocal_goto_receiver ());
- else
-#endif
{ /* Nothing */ }
if (region->exc_ptr_reg)
for (i = 1; vec_safe_iterate (cfun->eh->lp_array, i, &lp); ++i)
{
basic_block bb;
- rtx seq;
- edge e;
+ rtx_insn *seq;
if (lp == NULL || lp->post_landing_pad == NULL)
continue;
end_sequence ();
bb = emit_to_new_bb_before (seq, label_rtx (lp->post_landing_pad));
- e = make_edge (bb, bb->next_bb, e_flags);
- e->count = bb->count;
- e->probability = REG_BR_PROB_BASE;
+ bb->count = bb->next_bb->count;
+ make_single_succ_edge (bb, bb->next_bb, e_flags);
if (current_loops)
{
- struct loop *loop = bb->next_bb->loop_father;
+ class loop *loop = bb->next_bb->loop_father;
/* If we created a pre-header block, add the new block to the
outer loop, otherwise to the loop itself. */
if (bb->next_bb == loop->header)
sjlj_mark_call_sites (void)
{
int last_call_site = -2;
- rtx insn, mem;
+ rtx_insn *insn;
+ rtx mem;
for (insn = get_insns (); insn ; insn = NEXT_INSN (insn))
{
eh_region r;
bool nothrow;
int this_call_site;
- rtx before, p;
+ rtx_insn *before, *p;
/* Reset value tracking at extended basic block boundaries. */
if (LABEL_P (insn))
last_call_site = -2;
+ /* If the function allocates dynamic stack space, the context must
+ be updated after every allocation/deallocation accordingly. */
+ if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_UPDATE_SJLJ_CONTEXT)
+ {
+ rtx buf_addr;
+
+ start_sequence ();
+ buf_addr = plus_constant (Pmode, XEXP (crtl->eh.sjlj_fc, 0),
+ sjlj_fc_jbuf_ofs);
+ expand_builtin_update_setjmp_buf (buf_addr);
+ p = get_insns ();
+ end_sequence ();
+ emit_insn_before (p, insn);
+ }
+
if (! INSN_P (insn))
continue;
/* Don't separate a call from it's argument loads. */
before = insn;
if (CALL_P (insn))
- before = find_first_parameter_load (insn, NULL_RTX);
+ before = find_first_parameter_load (insn, NULL);
start_sequence ();
mem = adjust_address (crtl->eh.sjlj_fc, TYPE_MODE (integer_type_node),
/* Construct the SjLj_Function_Context. */
static void
-sjlj_emit_function_enter (rtx dispatch_label)
+sjlj_emit_function_enter (rtx_code_label *dispatch_label)
{
- rtx fn_begin, fc, mem, seq;
+ rtx_insn *fn_begin, *seq;
+ rtx fc, mem;
bool fn_begin_outside_block;
rtx personality = get_personality_function (current_function_decl);
/* We're storing this libcall's address into memory instead of
calling it directly. Thus, we must call assemble_external_libcall
- here, as we can not depend on emit_library_call to do it for us. */
+ here, as we cannot depend on emit_library_call to do it for us. */
assemble_external_libcall (personality);
mem = adjust_address (fc, Pmode, sjlj_fc_personality_ofs);
emit_move_insn (mem, personality);
if (dispatch_label)
{
+ rtx addr = plus_constant (Pmode, XEXP (fc, 0), sjlj_fc_jbuf_ofs);
+
#ifdef DONT_USE_BUILTIN_SETJMP
- rtx x;
- x = emit_library_call_value (setjmp_libfunc, NULL_RTX, LCT_RETURNS_TWICE,
- TYPE_MODE (integer_type_node), 1,
- plus_constant (Pmode, XEXP (fc, 0),
- sjlj_fc_jbuf_ofs), Pmode);
+ addr = copy_addr_to_reg (addr);
+ addr = convert_memory_address (ptr_mode, addr);
+ tree addr_tree = make_tree (ptr_type_node, addr);
+
+ tree call_expr = build_call_expr (setjmp_fn, 1, addr_tree);
+ rtx x = expand_call (call_expr, NULL_RTX, false);
emit_cmp_and_jump_insns (x, const0_rtx, NE, 0,
TYPE_MODE (integer_type_node), 0,
- dispatch_label, REG_BR_PROB_BASE / 100);
+ dispatch_label,
+ profile_probability::unlikely ());
#else
- expand_builtin_setjmp_setup (plus_constant (Pmode, XEXP (fc, 0),
- sjlj_fc_jbuf_ofs),
- dispatch_label);
+ expand_builtin_setjmp_setup (addr, dispatch_label);
#endif
}
emit_library_call (unwind_sjlj_register_libfunc, LCT_NORMAL, VOIDmode,
- 1, XEXP (fc, 0), Pmode);
+ XEXP (fc, 0), Pmode);
seq = get_insns ();
end_sequence ();
fn_begin_outside_block = false;
}
+#ifdef DONT_USE_BUILTIN_SETJMP
+ if (dispatch_label)
+ {
+ /* The sequence contains a branch in the middle so we need to force
+ the creation of a new basic block by means of BB_SUPERBLOCK. */
+ if (fn_begin_outside_block)
+ {
+ basic_block bb
+ = split_edge (single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun)));
+ if (JUMP_P (BB_END (bb)))
+ emit_insn_before (seq, BB_END (bb));
+ else
+ emit_insn_after (seq, BB_END (bb));
+ }
+ else
+ emit_insn_after (seq, fn_begin);
+
+ single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun))->flags |= BB_SUPERBLOCK;
+ return;
+ }
+#endif
+
if (fn_begin_outside_block)
insert_insn_on_edge (seq, single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun)));
else
the call to unwind_sjlj_unregister_libfunc if needed. */
void
-sjlj_emit_function_exit_after (rtx after)
+sjlj_emit_function_exit_after (rtx_insn *after)
{
crtl->eh.sjlj_exit_after = after;
}
static void
sjlj_emit_function_exit (void)
{
- rtx seq, insn;
+ rtx_insn *seq, *insn;
start_sequence ();
emit_library_call (unwind_sjlj_unregister_libfunc, LCT_NORMAL, VOIDmode,
- 1, XEXP (crtl->eh.sjlj_fc, 0), Pmode);
+ XEXP (crtl->eh.sjlj_fc, 0), Pmode);
seq = get_insns ();
end_sequence ();
}
static void
-sjlj_emit_dispatch_table (rtx dispatch_label, int num_dispatch)
+sjlj_emit_dispatch_table (rtx_code_label *dispatch_label, int num_dispatch)
{
- enum machine_mode unwind_word_mode = targetm.unwind_word_mode ();
- enum machine_mode filter_mode = targetm.eh_return_filter_mode ();
+ scalar_int_mode unwind_word_mode = targetm.unwind_word_mode ();
+ scalar_int_mode filter_mode = targetm.eh_return_filter_mode ();
eh_landing_pad lp;
- rtx mem, seq, fc, before, exc_ptr_reg, filter_reg;
- rtx first_reachable_label;
+ rtx mem, fc, exc_ptr_reg, filter_reg;
+ rtx_insn *seq;
basic_block bb;
eh_region r;
- edge e;
int i, disp_index;
vec<tree> dispatch_labels = vNULL;
label on the nonlocal_goto_label list. Since we're modeling these
CFG edges more exactly, we can use the forced_labels list instead. */
LABEL_PRESERVE_P (dispatch_label) = 1;
- forced_labels
- = gen_rtx_EXPR_LIST (VOIDmode, dispatch_label, forced_labels);
+ vec_safe_push<rtx_insn *> (forced_labels, dispatch_label);
#endif
/* Load up exc_ptr and filter values from the function context. */
/* Jump to one of the directly reachable regions. */
disp_index = 0;
- first_reachable_label = NULL;
+ rtx_code_label *first_reachable_label = NULL;
/* If there's exactly one call site in the function, don't bother
generating a switch statement. */
for (i = 1; vec_safe_iterate (cfun->eh->lp_array, i, &lp); ++i)
if (lp && lp->post_landing_pad)
{
- rtx seq2, label;
+ rtx_insn *seq2;
+ rtx_code_label *label;
start_sequence ();
t = build_int_cst (integer_type_node, disp_index);
case_elt = build_case_label (t, NULL, t_label);
dispatch_labels.quick_push (case_elt);
- label = label_rtx (t_label);
+ label = jump_target_rtx (t_label);
}
else
label = gen_label_rtx ();
seq2 = get_insns ();
end_sequence ();
- before = label_rtx (lp->post_landing_pad);
+ rtx_insn *before = label_rtx (lp->post_landing_pad);
bb = emit_to_new_bb_before (seq2, before);
- e = make_edge (bb, bb->next_bb, EDGE_FALLTHRU);
- e->count = bb->count;
- e->probability = REG_BR_PROB_BASE;
+ make_single_succ_edge (bb, bb->next_bb, EDGE_FALLTHRU);
if (current_loops)
{
- struct loop *loop = bb->next_bb->loop_father;
+ class loop *loop = bb->next_bb->loop_father;
/* If we created a pre-header block, add the new block to the
outer loop, otherwise to the loop itself. */
if (bb->next_bb == loop->header)
{
for (loop = bb->loop_father;
loop_outer (loop); loop = loop_outer (loop))
- {
- loop->header = NULL;
- loop->latch = NULL;
- }
+ mark_loop_for_removal (loop);
}
}
bb = emit_to_new_bb_before (seq, first_reachable_label);
if (num_dispatch == 1)
{
- e = make_edge (bb, bb->next_bb, EDGE_FALLTHRU);
- e->count = bb->count;
- e->probability = REG_BR_PROB_BASE;
+ make_single_succ_edge (bb, bb->next_bb, EDGE_FALLTHRU);
if (current_loops)
{
- struct loop *loop = bb->next_bb->loop_father;
+ class loop *loop = bb->next_bb->loop_father;
/* If we created a pre-header block, add the new block to the
outer loop, otherwise to the loop itself. */
if (bb->next_bb == loop->header)
num_dispatch = sjlj_assign_call_site_values ();
if (num_dispatch > 0)
{
- rtx dispatch_label = gen_label_rtx ();
+ rtx_code_label *dispatch_label = gen_label_rtx ();
int align = STACK_SLOT_ALIGNMENT (sjlj_fc_type_node,
TYPE_MODE (sjlj_fc_type_node),
TYPE_ALIGN (sjlj_fc_type_node));
align);
sjlj_mark_call_sites ();
- sjlj_emit_function_enter (NULL_RTX);
+ sjlj_emit_function_enter (NULL);
sjlj_emit_function_exit ();
}
sjlj_lp_call_site_index.release ();
}
+/* Update the sjlj function context. This function should be called
+ whenever we allocate or deallocate dynamic stack space. */
+
+void
+update_sjlj_context (void)
+{
+ if (!flag_exceptions)
+ return;
+
+ emit_note (NOTE_INSN_UPDATE_SJLJ_CONTEXT);
+}
+
/* After initial rtl generation, call back to finish generating
exception support code. */
sjlj_build_landing_pads ();
else
dw2_build_landing_pads ();
- break_superblocks ();
- if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ
- /* Kludge for Alpha (see alpha_gp_save_rtx). */
- || single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun))->insns.r)
- commit_edge_insertions ();
+ break_superblocks ();
/* Redirect all EH edges from the post_landing_pad to the landing pad. */
FOR_EACH_BB_FN (bb, cfun)
: EDGE_ABNORMAL);
}
}
+
+ if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ
+ /* Kludge for Alpha (see alpha_gp_save_rtx). */
+ || single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun))->insns.r)
+ commit_edge_insertions ();
}
\f
/* This section handles removing dead code for flow. */
{
if (lp)
{
- rtx lab = lp->landing_pad;
+ rtx_code_label *lab = lp->landing_pad;
if (lab && LABEL_P (lab))
(*callback) (lab);
}
direct call cases) and just pull the data out of the trees. */
void
-make_reg_eh_region_note (rtx insn, int ecf_flags, int lp_nr)
+make_reg_eh_region_note (rtx_insn *insn, int ecf_flags, int lp_nr)
{
rtx value;
if (ecf_flags & ECF_NOTHROW)
already exists. */
void
-make_reg_eh_region_note_nothrow_nononlocal (rtx insn)
+make_reg_eh_region_note_nothrow_nononlocal (rtx_insn *insn)
{
rtx note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
rtx intmin = GEN_INT (INT_MIN);
to look for a note, or the note itself. */
void
-copy_reg_eh_region_note_forward (rtx note_or_insn, rtx first, rtx last)
+copy_reg_eh_region_note_forward (rtx note_or_insn, rtx_insn *first, rtx last)
{
- rtx insn, note = note_or_insn;
+ rtx_insn *insn;
+ rtx note = note_or_insn;
if (INSN_P (note_or_insn))
{
if (note == NULL)
return;
}
+ else if (is_a <rtx_insn *> (note_or_insn))
+ return;
note = XEXP (note, 0);
for (insn = first; insn != last ; insn = NEXT_INSN (insn))
/* Likewise, but iterate backward. */
void
-copy_reg_eh_region_note_backward (rtx note_or_insn, rtx last, rtx first)
+copy_reg_eh_region_note_backward (rtx note_or_insn, rtx_insn *last, rtx first)
{
- rtx insn, note = note_or_insn;
+ rtx_insn *insn;
+ rtx note = note_or_insn;
if (INSN_P (note_or_insn))
{
if (note == NULL)
return;
}
+ else if (is_a <rtx_insn *> (note_or_insn))
+ return;
note = XEXP (note, 0);
for (insn = last; insn != first; insn = PREV_INSN (insn))
if (NONJUMP_INSN_P (insn)
&& GET_CODE (PATTERN (insn)) == SEQUENCE)
{
- rtx seq = PATTERN (insn);
- int i, n = XVECLEN (seq, 0);
+ rtx_sequence *seq = as_a <rtx_sequence *> (PATTERN (insn));
+ int i, n = seq->len ();
for (i = 0; i < n; i++)
- if (can_throw_external (XVECEXP (seq, 0, i)))
+ if (can_throw_external (seq->element (i)))
return true;
return false;
if (NONJUMP_INSN_P (insn)
&& GET_CODE (PATTERN (insn)) == SEQUENCE)
{
- rtx seq = PATTERN (insn);
- int i, n = XVECLEN (seq, 0);
+ rtx_sequence *seq = as_a <rtx_sequence *> (PATTERN (insn));
+ int i, n = seq->len ();
for (i = 0; i < n; i++)
- if (!insn_nothrow_p (XVECEXP (seq, 0, i)))
+ if (!insn_nothrow_p (seq->element (i)))
return false;
return true;
/* ??? This test is here in this file because it (ab)uses REG_EH_REGION. */
bool
-can_nonlocal_goto (const_rtx insn)
+can_nonlocal_goto (const rtx_insn *insn)
{
if (nonlocal_goto_handler_labels && CALL_P (insn))
{
static unsigned int
set_nothrow_function_flags (void)
{
- rtx insn;
+ rtx_insn *insn;
crtl->nothrow = 1;
= expand_builtin_eh_common (CALL_EXPR_ARG (exp, 0));
eh_region src
= expand_builtin_eh_common (CALL_EXPR_ARG (exp, 1));
- enum machine_mode fmode = targetm.eh_return_filter_mode ();
+ scalar_int_mode fmode = targetm.eh_return_filter_mode ();
if (dst->exc_ptr_reg == NULL)
dst->exc_ptr_reg = gen_reg_rtx (ptr_mode);
able to copy the saved values for any registers from frames we unwind. */
crtl->saves_all_registers = 1;
-#ifdef SETUP_FRAME_ADDRESSES
SETUP_FRAME_ADDRESSES ();
-#endif
}
/* Map a non-negative number to an eh return data register number; expands
}
/* First mask out any unwanted bits. */
-#ifdef MASK_RETURN_ADDR
- expand_and (Pmode, addr, MASK_RETURN_ADDR, addr);
-#endif
+ rtx mask = MASK_RETURN_ADDR;
+ if (mask)
+ expand_and (Pmode, addr, mask, addr);
/* Then adjust to find the real return address. */
-#if defined (RETURN_ADDR_OFFSET)
- addr = plus_constant (Pmode, addr, RETURN_ADDR_OFFSET);
-#endif
+ if (RETURN_ADDR_OFFSET)
+ addr = plus_constant (Pmode, addr, RETURN_ADDR_OFFSET);
return addr;
}
addr = convert_memory_address (Pmode, addr);
-#ifdef RETURN_ADDR_OFFSET
- addr = force_reg (Pmode, addr);
- addr = plus_constant (Pmode, addr, -RETURN_ADDR_OFFSET);
-#endif
+ if (RETURN_ADDR_OFFSET)
+ {
+ addr = force_reg (Pmode, addr);
+ addr = plus_constant (Pmode, addr, -RETURN_ADDR_OFFSET);
+ }
return addr;
}
VOIDmode, EXPAND_NORMAL);
tmp = convert_memory_address (Pmode, tmp);
if (!crtl->eh.ehr_stackadj)
- crtl->eh.ehr_stackadj = copy_to_reg (tmp);
+ crtl->eh.ehr_stackadj = copy_addr_to_reg (tmp);
else if (tmp != crtl->eh.ehr_stackadj)
emit_move_insn (crtl->eh.ehr_stackadj, tmp);
#endif
VOIDmode, EXPAND_NORMAL);
tmp = convert_memory_address (Pmode, tmp);
if (!crtl->eh.ehr_handler)
- crtl->eh.ehr_handler = copy_to_reg (tmp);
+ crtl->eh.ehr_handler = copy_addr_to_reg (tmp);
else if (tmp != crtl->eh.ehr_handler)
emit_move_insn (crtl->eh.ehr_handler, tmp);
void
expand_eh_return (void)
{
- rtx around_label;
+ rtx_code_label *around_label;
if (! crtl->eh.ehr_label)
return;
emit_move_insn (EH_RETURN_STACKADJ_RTX, crtl->eh.ehr_stackadj);
#endif
-#ifdef HAVE_eh_return
- if (HAVE_eh_return)
- emit_insn (gen_eh_return (crtl->eh.ehr_handler));
+ if (targetm.have_eh_return ())
+ emit_insn (targetm.gen_eh_return (crtl->eh.ehr_handler));
else
-#endif
{
-#ifdef EH_RETURN_HANDLER_RTX
- emit_move_insn (EH_RETURN_HANDLER_RTX, crtl->eh.ehr_handler);
-#else
- error ("__builtin_eh_return not supported on this target");
-#endif
+ if (rtx handler = EH_RETURN_HANDLER_RTX)
+ emit_move_insn (handler, crtl->eh.ehr_handler);
+ else
+ error ("%<__builtin_eh_return%> not supported on this target");
}
emit_label (around_label);
return call_site_base + crtl->eh.call_site_record_v[section]->length () - 1;
}
-static rtx
-emit_note_eh_region_end (rtx insn)
+static rtx_note *
+emit_note_eh_region_end (rtx_insn *insn)
{
- rtx next = NEXT_INSN (insn);
+ return emit_note_after (NOTE_INSN_EH_REGION_END, insn);
+}
- /* Make sure we do not split a call and its corresponding
- CALL_ARG_LOCATION note. */
- if (next && NOTE_P (next)
- && NOTE_KIND (next) == NOTE_INSN_CALL_ARG_LOCATION)
- insn = next;
+/* Add NOP after NOTE_INSN_SWITCH_TEXT_SECTIONS when the cold section starts
+ with landing pad.
+ With landing pad being at offset 0 from the start label of the section
+ we would miss EH delivery because 0 is special and means no landing pad. */
- return emit_note_after (NOTE_INSN_EH_REGION_END, insn);
+static bool
+maybe_add_nop_after_section_switch (void)
+{
+ if (!crtl->uses_eh_lsda
+ || !crtl->eh.call_site_record_v[1])
+ return false;
+ int n = vec_safe_length (crtl->eh.call_site_record_v[1]);
+ hash_set<rtx_insn *> visited;
+
+ for (int i = 0; i < n; ++i)
+ {
+ struct call_site_record_d *cs
+ = (*crtl->eh.call_site_record_v[1])[i];
+ if (cs->landing_pad)
+ {
+ rtx_insn *insn = as_a <rtx_insn *> (cs->landing_pad);
+ while (true)
+ {
+ /* Landing pads have LABEL_PRESERVE_P flag set. This check make
+ sure that we do not walk past landing pad visited earlier
+ which would result in possible quadratic behaviour. */
+ if (LABEL_P (insn) && LABEL_PRESERVE_P (insn)
+ && visited.add (insn))
+ break;
+
+ /* Conservatively assume that ASM insn may be empty. We have
+ now way to tell what they contain. */
+ if (active_insn_p (insn)
+ && GET_CODE (PATTERN (insn)) != ASM_INPUT
+ && GET_CODE (PATTERN (insn)) != ASM_OPERANDS)
+ break;
+
+ /* If we reached the start of hot section, then NOP will be
+ needed. */
+ if (GET_CODE (insn) == NOTE
+ && NOTE_KIND (insn) == NOTE_INSN_SWITCH_TEXT_SECTIONS)
+ {
+ emit_insn_after (gen_nop (), insn);
+ break;
+ }
+
+ /* We visit only labels from cold section. We should never hit
+ begining of the insn stream here. */
+ insn = PREV_INSN (insn);
+ }
+ }
+ }
+ return false;
}
/* Turn REG_EH_REGION notes back into NOTE_INSN_EH_REGION notes.
static unsigned int
convert_to_eh_region_ranges (void)
{
- rtx insn, iter, note;
+ rtx insn;
+ rtx_insn *iter;
+ rtx_note *note;
action_hash_type ar_hash (31);
int last_action = -3;
- rtx last_action_insn = NULL_RTX;
+ rtx_insn *last_action_insn = NULL;
rtx last_landing_pad = NULL_RTX;
- rtx first_no_action_insn = NULL_RTX;
+ rtx_insn *first_no_action_insn = NULL;
int call_site = 0;
int cur_sec = 0;
- rtx section_switch_note = NULL_RTX;
- rtx first_no_action_insn_before_switch = NULL_RTX;
- rtx last_no_action_insn_before_switch = NULL_RTX;
+ rtx_insn *section_switch_note = NULL;
+ rtx_insn *first_no_action_insn_before_switch = NULL;
+ rtx_insn *last_no_action_insn_before_switch = NULL;
int saved_call_site_base = call_site_base;
vec_alloc (crtl->eh.action_record_data, 64);
eh_region region;
bool nothrow;
int this_action;
- rtx this_landing_pad;
+ rtx_code_label *this_landing_pad;
insn = iter;
if (NONJUMP_INSN_P (insn)
if (this_action >= 0)
this_landing_pad = lp->landing_pad;
else
- this_landing_pad = NULL_RTX;
+ this_landing_pad = NULL;
/* Differing actions or landing pads implies a change in call-site
info, which implies some EH_REGION note should be emitted. */
gcc_assert (last_action != -3
|| (last_action_insn
== last_no_action_insn_before_switch));
- first_no_action_insn_before_switch = NULL_RTX;
- last_no_action_insn_before_switch = NULL_RTX;
+ first_no_action_insn_before_switch = NULL;
+ last_no_action_insn_before_switch = NULL;
call_site_base++;
}
/* If we'd not seen a previous action (-3) or the previous
note = emit_note_before (NOTE_INSN_EH_REGION_BEG,
first_no_action_insn);
NOTE_EH_HANDLER (note) = call_site;
- first_no_action_insn = NULL_RTX;
+ first_no_action_insn = NULL;
}
note = emit_note_eh_region_end (last_action_insn);
{
first_no_action_insn_before_switch = first_no_action_insn;
last_no_action_insn_before_switch = last_action_insn;
- first_no_action_insn = NULL_RTX;
+ first_no_action_insn = NULL;
gcc_assert (last_action == -1);
last_action = -3;
}
virtual bool gate (function *);
virtual unsigned int execute (function *)
{
- return convert_to_eh_region_ranges ();
+ int ret = convert_to_eh_region_ranges ();
+ maybe_add_nop_after_section_switch ();
+ return ret;
}
}; // class pass_convert_to_eh_region_ranges
}
\f
-#ifndef HAVE_AS_LEB128
static int
dw2_size_of_call_site_table (int section)
{
return size;
}
-#endif
static void
dw2_output_call_site_table (int cs_format, int section)
s = exception_section;
else
{
+ int flags;
+
+ if (EH_TABLES_CAN_BE_READ_ONLY)
+ {
+ int tt_format =
+ ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/1);
+ flags = ((! flag_pic
+ || ((tt_format & 0x70) != DW_EH_PE_absptr
+ && (tt_format & 0x70) != DW_EH_PE_aligned))
+ ? 0 : SECTION_WRITE);
+ }
+ else
+ flags = SECTION_WRITE;
+
/* Compute the section and cache it into exception_section,
unless it depends on the function name. */
if (targetm_common.have_named_sections)
{
- int flags;
-
- if (EH_TABLES_CAN_BE_READ_ONLY)
- {
- int tt_format =
- ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/1);
- flags = ((! flag_pic
- || ((tt_format & 0x70) != DW_EH_PE_absptr
- && (tt_format & 0x70) != DW_EH_PE_aligned))
- ? 0 : SECTION_WRITE);
- }
- else
- flags = SECTION_WRITE;
-
#ifdef HAVE_LD_EH_GC_SECTIONS
if (flag_function_sections
|| (DECL_COMDAT_GROUP (current_function_decl) && HAVE_COMDAT_GROUP))
}
else
exception_section
- = s = flag_pic ? data_section : readonly_data_section;
+ = s = flags == SECTION_WRITE ? data_section : readonly_data_section;
}
switch_to_section (s);
}
-
/* Output a reference from an exception table to the type_info object TYPE.
TT_FORMAT and TT_FORMAT_SIZE describe the DWARF encoding method used for
the value. */
if (TREE_CODE (type) == ADDR_EXPR)
{
type = TREE_OPERAND (type, 0);
- if (TREE_CODE (type) == VAR_DECL)
+ if (VAR_P (type))
is_public = TREE_PUBLIC (type);
}
else
dw2_asm_output_encoded_addr_rtx (tt_format, value, is_public, NULL);
}
+/* Output an exception table for the current function according to SECTION.
+
+ 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. */
+
static void
output_one_function_exception_table (int section)
{
int tt_format, cs_format, lp_format, i;
-#ifdef HAVE_AS_LEB128
char ttype_label[32];
char cs_after_size_label[32];
char cs_end_label[32];
-#else
int call_site_len;
-#endif
int have_tt_data;
int tt_format_size = 0;
else
{
tt_format = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/1);
-#ifdef HAVE_AS_LEB128
- ASM_GENERATE_INTERNAL_LABEL (ttype_label,
- section ? "LLSDATTC" : "LLSDATT",
- current_function_funcdef_no);
-#endif
+ if (HAVE_AS_LEB128)
+ ASM_GENERATE_INTERNAL_LABEL (ttype_label,
+ section ? "LLSDATTC" : "LLSDATT",
+ current_function_funcdef_no);
+
tt_format_size = size_of_encoded_value (tt_format);
assemble_align (tt_format_size * BITS_PER_UNIT);
dw2_asm_output_data (1, tt_format, "@TType format (%s)",
eh_data_format_name (tt_format));
-#ifndef HAVE_AS_LEB128
- if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
- call_site_len = sjlj_size_of_call_site_table ();
- else
- call_site_len = dw2_size_of_call_site_table (section);
-#endif
+ if (!HAVE_AS_LEB128)
+ {
+ if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
+ call_site_len = sjlj_size_of_call_site_table ();
+ else
+ call_site_len = dw2_size_of_call_site_table (section);
+ }
/* A pc-relative 4-byte displacement to the @TType data. */
if (have_tt_data)
{
-#ifdef HAVE_AS_LEB128
- char ttype_after_disp_label[32];
- ASM_GENERATE_INTERNAL_LABEL (ttype_after_disp_label,
- section ? "LLSDATTDC" : "LLSDATTD",
- current_function_funcdef_no);
- dw2_asm_output_delta_uleb128 (ttype_label, ttype_after_disp_label,
- "@TType base offset");
- ASM_OUTPUT_LABEL (asm_out_file, ttype_after_disp_label);
-#else
- /* Ug. Alignment queers things. */
- unsigned int before_disp, after_disp, last_disp, disp;
+ if (HAVE_AS_LEB128)
+ {
+ char ttype_after_disp_label[32];
+ ASM_GENERATE_INTERNAL_LABEL (ttype_after_disp_label,
+ section ? "LLSDATTDC" : "LLSDATTD",
+ current_function_funcdef_no);
+ dw2_asm_output_delta_uleb128 (ttype_label, ttype_after_disp_label,
+ "@TType base offset");
+ ASM_OUTPUT_LABEL (asm_out_file, ttype_after_disp_label);
+ }
+ else
+ {
+ /* Ug. Alignment queers things. */
+ unsigned int before_disp, after_disp, last_disp, disp;
- before_disp = 1 + 1;
- after_disp = (1 + size_of_uleb128 (call_site_len)
- + call_site_len
- + vec_safe_length (crtl->eh.action_record_data)
- + (vec_safe_length (cfun->eh->ttype_data)
- * tt_format_size));
+ before_disp = 1 + 1;
+ after_disp = (1 + size_of_uleb128 (call_site_len)
+ + call_site_len
+ + vec_safe_length (crtl->eh.action_record_data)
+ + (vec_safe_length (cfun->eh->ttype_data)
+ * tt_format_size));
- disp = after_disp;
- do
- {
- unsigned int disp_size, pad;
+ disp = after_disp;
+ do
+ {
+ unsigned int disp_size, pad;
- last_disp = disp;
- disp_size = size_of_uleb128 (disp);
- pad = before_disp + disp_size + after_disp;
- if (pad % tt_format_size)
- pad = tt_format_size - (pad % tt_format_size);
- else
- pad = 0;
- disp = after_disp + pad;
- }
- while (disp != last_disp);
+ last_disp = disp;
+ disp_size = size_of_uleb128 (disp);
+ pad = before_disp + disp_size + after_disp;
+ if (pad % tt_format_size)
+ pad = tt_format_size - (pad % tt_format_size);
+ else
+ pad = 0;
+ disp = after_disp + pad;
+ }
+ while (disp != last_disp);
- dw2_asm_output_data_uleb128 (disp, "@TType base offset");
-#endif
- }
+ dw2_asm_output_data_uleb128 (disp, "@TType base offset");
+ }
+ }
/* Indicate the format of the call-site offsets. */
-#ifdef HAVE_AS_LEB128
- cs_format = DW_EH_PE_uleb128;
-#else
- cs_format = DW_EH_PE_udata4;
-#endif
+ if (HAVE_AS_LEB128)
+ cs_format = DW_EH_PE_uleb128;
+ else
+ cs_format = DW_EH_PE_udata4;
+
dw2_asm_output_data (1, cs_format, "call-site format (%s)",
eh_data_format_name (cs_format));
-#ifdef HAVE_AS_LEB128
- ASM_GENERATE_INTERNAL_LABEL (cs_after_size_label,
- section ? "LLSDACSBC" : "LLSDACSB",
- current_function_funcdef_no);
- ASM_GENERATE_INTERNAL_LABEL (cs_end_label,
- section ? "LLSDACSEC" : "LLSDACSE",
- current_function_funcdef_no);
- dw2_asm_output_delta_uleb128 (cs_end_label, cs_after_size_label,
- "Call-site table length");
- ASM_OUTPUT_LABEL (asm_out_file, cs_after_size_label);
- if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
- sjlj_output_call_site_table ();
- else
- dw2_output_call_site_table (cs_format, section);
- ASM_OUTPUT_LABEL (asm_out_file, cs_end_label);
-#else
- dw2_asm_output_data_uleb128 (call_site_len, "Call-site table length");
- if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
- sjlj_output_call_site_table ();
+ if (HAVE_AS_LEB128)
+ {
+ ASM_GENERATE_INTERNAL_LABEL (cs_after_size_label,
+ section ? "LLSDACSBC" : "LLSDACSB",
+ current_function_funcdef_no);
+ ASM_GENERATE_INTERNAL_LABEL (cs_end_label,
+ section ? "LLSDACSEC" : "LLSDACSE",
+ current_function_funcdef_no);
+ dw2_asm_output_delta_uleb128 (cs_end_label, cs_after_size_label,
+ "Call-site table length");
+ ASM_OUTPUT_LABEL (asm_out_file, cs_after_size_label);
+ if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
+ sjlj_output_call_site_table ();
+ else
+ dw2_output_call_site_table (cs_format, section);
+ ASM_OUTPUT_LABEL (asm_out_file, cs_end_label);
+ }
else
- dw2_output_call_site_table (cs_format, section);
-#endif
+ {
+ dw2_asm_output_data_uleb128 (call_site_len, "Call-site table length");
+ if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
+ sjlj_output_call_site_table ();
+ else
+ dw2_output_call_site_table (cs_format, section);
+ }
/* ??? Decode and interpret the data for flag_debug_asm. */
{
output_ttype (type, tt_format, tt_format_size);
}
-#ifdef HAVE_AS_LEB128
- if (have_tt_data)
- ASM_OUTPUT_LABEL (asm_out_file, ttype_label);
-#endif
+ if (HAVE_AS_LEB128 && have_tt_data)
+ ASM_OUTPUT_LABEL (asm_out_file, ttype_label);
/* ??? Decode and interpret the data for flag_debug_asm. */
if (targetm.arm_eabi_unwinder)
}
}
+/* 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. */
+
void
-output_function_exception_table (const char *fnname)
+output_function_exception_table (int section)
{
+ const char *fnname = get_fnname_from_decl (current_function_decl);
rtx personality = get_personality_function (current_function_decl);
/* Not all functions need anything. */
- if (! crtl->uses_eh_lsda)
+ if (!crtl->uses_eh_lsda
+ || targetm_common.except_unwind_info (&global_options) == UI_NONE)
+ return;
+
+ /* No need to emit any boilerplate stuff for the cold part. */
+ if (section == 1 && !crtl->eh.call_site_record_v[1])
return;
if (personality)
/* If the target wants a label to begin the table, emit it here. */
targetm.asm_out.emit_except_table_label (asm_out_file);
- output_one_function_exception_table (0);
- if (crtl->eh.call_site_record_v[1])
- output_one_function_exception_table (1);
+ /* Do the real work. */
+ output_one_function_exception_table (section);
switch_to_section (current_function_section ());
}
void
-set_eh_throw_stmt_table (struct function *fun, struct htab *table)
+set_eh_throw_stmt_table (function *fun, hash_map<gimple *, int> *table)
{
fun->eh->throw_stmt_table = table;
}
-htab_t
+hash_map<gimple *, int> *
get_eh_throw_stmt_table (struct function *fun)
{
return fun->eh->throw_stmt_table;
for (lp = i->landing_pads; lp ; lp = lp->next_lp)
{
fprintf (out, "{%i,", lp->index);
- print_generic_expr (out, lp->post_landing_pad, 0);
+ print_generic_expr (out, lp->post_landing_pad);
fputc ('}', out);
if (lp->next_lp)
fputc (',', out);
fprintf (out, "(nil),");
if (lp->post_landing_pad)
{
- rtx lab = label_rtx (lp->post_landing_pad);
+ rtx_insn *lab = label_rtx (lp->post_landing_pad);
fprintf (out, "%i%s}", INSN_UID (lab),
NOTE_P (lab) ? "(del)" : "");
}
if (c->label)
{
fprintf (out, "lab:");
- print_generic_expr (out, c->label, 0);
+ print_generic_expr (out, c->label);
fputc (';', out);
}
- print_generic_expr (out, c->type_list, 0);
+ print_generic_expr (out, c->type_list);
fputc ('}', out);
if (c->next_catch)
fputc (',', out);
case ERT_ALLOWED_EXCEPTIONS:
fprintf (out, " filter :%i types:", i->u.allowed.filter);
- print_generic_expr (out, i->u.allowed.type_list, 0);
+ print_generic_expr (out, i->u.allowed.type_list);
break;
}
fputc ('\n', out);
count_r++;
else
{
- error ("region_array is corrupted for region %i", r->index);
+ error ("%<region_array%> is corrupted for region %i", r->index);
err = true;
}
}
count_lp++;
else
{
- error ("lp_array is corrupted for lp %i", lp->index);
+ error ("%<lp_array%> is corrupted for lp %i", lp->index);
err = true;
}
}
{
if ((*fun->eh->region_array)[r->index] != r)
{
- error ("region_array is corrupted for region %i", r->index);
+ error ("%<region_array%> is corrupted for region %i", r->index);
err = true;
}
if (r->outer != outer)
{
if ((*fun->eh->lp_array)[lp->index] != lp)
{
- error ("lp_array is corrupted for lp %i", lp->index);
+ error ("%<lp_array%> is corrupted for lp %i", lp->index);
err = true;
}
if (lp->region != r)
}
if (count_r != nvisited_r)
{
- error ("region_array does not match region_tree");
+ error ("%<region_array%> does not match %<region_tree%>");
err = true;
}
if (count_lp != nvisited_lp)
{
- error ("lp_array does not match region_tree");
+ error ("%<lp_array%> does not match %<region_tree%>");
err = true;
}
if (err)
{
dump_eh_tree (stderr, fun);
- internal_error ("verify_eh_tree failed");
+ internal_error ("%qs failed", __func__);
}
}
\f
projects / thirdparty / gcc.git / blobdiff