tree) leaves the TRY block, its necessary to record a tree in
this field. Thus a treemple is used. */
treemple child;
- gimple parent;
+ gtry *parent;
};
/* Hashtable helpers. */
static hash_table<finally_tree_hasher> *finally_tree;
static void
-record_in_finally_tree (treemple child, gimple parent)
+record_in_finally_tree (treemple child, gtry *parent)
{
struct finally_tree_node *n;
finally_tree_node **slot;
}
static void
-collect_finally_tree (gimple stmt, gimple region);
+collect_finally_tree (gimple stmt, gtry *region);
/* Go through the gimple sequence. Works with collect_finally_tree to
record all GIMPLE_LABEL and GIMPLE_TRY statements. */
static void
-collect_finally_tree_1 (gimple_seq seq, gimple region)
+collect_finally_tree_1 (gimple_seq seq, gtry *region)
{
gimple_stmt_iterator gsi;
}
static void
-collect_finally_tree (gimple stmt, gimple region)
+collect_finally_tree (gimple stmt, gtry *region)
{
treemple temp;
switch (gimple_code (stmt))
{
case GIMPLE_LABEL:
- temp.t = gimple_label_label (stmt);
+ temp.t = gimple_label_label (as_a <glabel *> (stmt));
record_in_finally_tree (temp, region);
break;
{
temp.g = stmt;
record_in_finally_tree (temp, region);
- collect_finally_tree_1 (gimple_try_eval (stmt), stmt);
+ collect_finally_tree_1 (gimple_try_eval (stmt),
+ as_a <gtry *> (stmt));
collect_finally_tree_1 (gimple_try_cleanup (stmt), region);
}
else if (gimple_try_kind (stmt) == GIMPLE_TRY_CATCH)
break;
case GIMPLE_CATCH:
- collect_finally_tree_1 (gimple_catch_handler (stmt), region);
+ collect_finally_tree_1 (gimple_catch_handler (
+ as_a <gcatch *> (stmt)),
+ region);
break;
case GIMPLE_EH_FILTER:
break;
case GIMPLE_EH_ELSE:
- collect_finally_tree_1 (gimple_eh_else_n_body (stmt), region);
- collect_finally_tree_1 (gimple_eh_else_e_body (stmt), region);
+ {
+ geh_else *eh_else_stmt = as_a <geh_else *> (stmt);
+ collect_finally_tree_1 (gimple_eh_else_n_body (eh_else_stmt), region);
+ collect_finally_tree_1 (gimple_eh_else_e_body (eh_else_stmt), region);
+ }
break;
default:
try_finally_expr is the original GIMPLE_TRY_FINALLY. We need to retain
this so that outside_finally_tree can reliably reference the tree used
in the collect_finally_tree data structures. */
- gimple try_finally_expr;
- gimple top_p;
+ gtry *try_finally_expr;
+ gtry *top_p;
/* While lowering a top_p usually it is expanded into multiple statements,
thus we need the following field to store them. */
bool may_throw;
};
-static gimple_seq lower_eh_must_not_throw (struct leh_state *, gimple);
+static gimple_seq lower_eh_must_not_throw (struct leh_state *, gtry *);
/* Search for STMT in the goto queue. Return the replacement,
or null if the statement isn't in the queue. */
replace_goto_queue_stmt_list (gimple_try_cleanup_ptr (stmt), tf);
break;
case GIMPLE_CATCH:
- replace_goto_queue_stmt_list (gimple_catch_handler_ptr (stmt), tf);
+ replace_goto_queue_stmt_list (gimple_catch_handler_ptr (
+ as_a <gcatch *> (stmt)),
+ tf);
break;
case GIMPLE_EH_FILTER:
replace_goto_queue_stmt_list (gimple_eh_filter_failure_ptr (stmt), tf);
break;
case GIMPLE_EH_ELSE:
- replace_goto_queue_stmt_list (gimple_eh_else_n_body_ptr (stmt), tf);
- replace_goto_queue_stmt_list (gimple_eh_else_e_body_ptr (stmt), tf);
+ {
+ geh_else *eh_else_stmt = as_a <geh_else *> (stmt);
+ replace_goto_queue_stmt_list (gimple_eh_else_n_body_ptr (eh_else_stmt),
+ tf);
+ replace_goto_queue_stmt_list (gimple_eh_else_e_body_ptr (eh_else_stmt),
+ tf);
+ }
break;
default:
switch (gimple_code (stmt))
{
case GIMPLE_COND:
- new_stmt.tp = gimple_op_ptr (stmt, 2);
- record_in_goto_queue_label (tf, new_stmt, gimple_cond_true_label (stmt),
- EXPR_LOCATION (*new_stmt.tp));
- new_stmt.tp = gimple_op_ptr (stmt, 3);
- record_in_goto_queue_label (tf, new_stmt, gimple_cond_false_label (stmt),
- EXPR_LOCATION (*new_stmt.tp));
+ {
+ gcond *cond_stmt = as_a <gcond *> (stmt);
+ new_stmt.tp = gimple_op_ptr (cond_stmt, 2);
+ record_in_goto_queue_label (tf, new_stmt,
+ gimple_cond_true_label (cond_stmt),
+ EXPR_LOCATION (*new_stmt.tp));
+ new_stmt.tp = gimple_op_ptr (cond_stmt, 3);
+ record_in_goto_queue_label (tf, new_stmt,
+ gimple_cond_false_label (cond_stmt),
+ EXPR_LOCATION (*new_stmt.tp));
+ }
break;
case GIMPLE_GOTO:
new_stmt.g = stmt;
of the labels will leave outer GIMPLE_TRY_FINALLY nodes. Verify this. */
static void
-verify_norecord_switch_expr (struct leh_state *state, gimple switch_expr)
+verify_norecord_switch_expr (struct leh_state *state,
+ gswitch *switch_expr)
{
struct leh_tf_state *tf = state->tf;
size_t i, n;
do_goto_redirection (struct goto_queue_node *q, tree finlab, gimple_seq mod,
struct leh_tf_state *tf)
{
- gimple x;
+ ggoto *x;
gcc_assert (q->is_label);
emit_post_landing_pad (gimple_seq *seq, eh_region region)
{
eh_landing_pad lp = region->landing_pads;
- gimple x;
+ glabel *x;
if (lp == NULL)
lp = gen_eh_landing_pad (region);
static void
emit_resx (gimple_seq *seq, eh_region region)
{
- gimple x = gimple_build_resx (region->index);
+ gresx *x = gimple_build_resx (region->index);
gimple_seq_add_stmt (seq, x);
if (region->outer)
record_stmt_eh_region (region->outer, x);
static void
emit_eh_dispatch (gimple_seq *seq, eh_region region)
{
- gimple x = gimple_build_eh_dispatch (region->index);
+ geh_dispatch *x = gimple_build_eh_dispatch (region->index);
gimple_seq_add_stmt (seq, x);
}
an existing label that should be put at the exit, or NULL. */
static gimple_seq
-frob_into_branch_around (gimple tp, eh_region region, tree over)
+frob_into_branch_around (gtry *tp, eh_region region, tree over)
{
gimple x;
gimple_seq cleanup, result;
lower_try_finally_dup_block (gimple_seq seq, struct leh_state *outer_state,
location_t loc)
{
- gimple region = NULL;
+ gtry *region = NULL;
gimple_seq new_seq;
gimple_stmt_iterator gsi;
/* A subroutine of lower_try_finally. If FINALLY consits of a
GIMPLE_EH_ELSE node, return it. */
-static inline gimple
+static inline geh_else *
get_eh_else (gimple_seq finally)
{
gimple x = gimple_seq_first_stmt (finally);
if (gimple_code (x) == GIMPLE_EH_ELSE)
{
gcc_assert (gimple_seq_singleton_p (finally));
- return x;
+ return as_a <geh_else *> (x);
}
return NULL;
}
gimple_stmt_iterator gsi;
bool finally_may_fallthru;
gimple_seq finally;
- gimple x, eh_else;
+ gimple x;
+ geh_mnt *eh_mnt;
+ gtry *try_stmt;
+ geh_else *eh_else;
/* First check for nothing to do. */
if (lang_hooks.eh_protect_cleanup_actions == NULL)
}
/* Wrap the block with protect_cleanup_actions as the action. */
- x = gimple_build_eh_must_not_throw (protect_cleanup_actions);
- x = gimple_build_try (finally, gimple_seq_alloc_with_stmt (x),
- GIMPLE_TRY_CATCH);
- finally = lower_eh_must_not_throw (outer_state, x);
+ eh_mnt = gimple_build_eh_must_not_throw (protect_cleanup_actions);
+ try_stmt = gimple_build_try (finally, gimple_seq_alloc_with_stmt (eh_mnt),
+ GIMPLE_TRY_CATCH);
+ finally = lower_eh_must_not_throw (outer_state, try_stmt);
/* Drop all of this into the exception sequence. */
emit_post_landing_pad (&eh_seq, tf->region);
struct leh_tf_state *tf)
{
tree lab;
- gimple x, eh_else;
+ gimple x;
+ geh_else *eh_else;
gimple_seq finally;
struct goto_queue_node *q, *qe;
lower_try_finally_onedest (struct leh_state *state, struct leh_tf_state *tf)
{
struct goto_queue_node *q, *qe;
+ geh_else *eh_else;
+ glabel *label_stmt;
gimple x;
gimple_seq finally;
gimple_stmt_iterator gsi;
/* Since there's only one destination, and the destination edge can only
either be EH or non-EH, that implies that all of our incoming edges
are of the same type. Therefore we can lower EH_ELSE immediately. */
- x = get_eh_else (finally);
- if (x)
+ eh_else = get_eh_else (finally);
+ if (eh_else)
{
if (tf->may_throw)
- finally = gimple_eh_else_e_body (x);
+ finally = gimple_eh_else_e_body (eh_else);
else
- finally = gimple_eh_else_n_body (x);
+ finally = gimple_eh_else_n_body (eh_else);
}
lower_eh_constructs_1 (state, &finally);
}
finally_label = create_artificial_label (loc);
- x = gimple_build_label (finally_label);
- gimple_seq_add_stmt (&tf->top_p_seq, x);
+ label_stmt = gimple_build_label (finally_label);
+ gimple_seq_add_stmt (&tf->top_p_seq, label_stmt);
gimple_seq_add_seq (&tf->top_p_seq, finally);
gimple_seq finally;
gimple_seq new_stmt;
gimple_seq seq;
- gimple x, eh_else;
+ gimple x;
+ geh_else *eh_else;
tree tmp;
location_t tf_loc = gimple_location (tf->try_finally_expr);
tree last_case;
vec<tree> case_label_vec;
gimple_seq switch_body = NULL;
- gimple x, eh_else;
+ gimple x;
+ geh_else *eh_else;
tree tmp;
gimple switch_stmt;
gimple_seq finally;
decide_copy_try_finally (int ndests, bool may_throw, gimple_seq finally)
{
int f_estimate, sw_estimate;
- gimple eh_else;
+ geh_else *eh_else;
/* If there's an EH_ELSE involved, the exception path is separate
and really doesn't come into play for this computation. */
arrange for the FINALLY block to be executed on all exits. */
static gimple_seq
-lower_try_finally (struct leh_state *state, gimple tp)
+lower_try_finally (struct leh_state *state, gtry *tp)
{
struct leh_tf_state this_tf;
struct leh_state this_state;
exception region trees that records all the magic. */
static gimple_seq
-lower_catch (struct leh_state *state, gimple tp)
+lower_catch (struct leh_state *state, gtry *tp)
{
eh_region try_region = NULL;
struct leh_state this_state = *state;
gsi_next (&gsi))
{
eh_catch c;
- gimple gcatch;
+ gcatch *catch_stmt;
gimple_seq handler;
- gcatch = gsi_stmt (gsi);
- c = gen_eh_region_catch (try_region, gimple_catch_types (gcatch));
+ catch_stmt = as_a <gcatch *> (gsi_stmt (gsi));
+ c = gen_eh_region_catch (try_region, gimple_catch_types (catch_stmt));
- handler = gimple_catch_handler (gcatch);
+ handler = gimple_catch_handler (catch_stmt);
lower_eh_constructs_1 (&this_state, &handler);
c->label = create_artificial_label (UNKNOWN_LOCATION);
region trees that record all the magic. */
static gimple_seq
-lower_eh_filter (struct leh_state *state, gimple tp)
+lower_eh_filter (struct leh_state *state, gtry *tp)
{
struct leh_state this_state = *state;
eh_region this_region = NULL;
plus the exception region trees that record all the magic. */
static gimple_seq
-lower_eh_must_not_throw (struct leh_state *state, gimple tp)
+lower_eh_must_not_throw (struct leh_state *state, gtry *tp)
{
struct leh_state this_state = *state;
this_region = gen_eh_region_must_not_throw (state->cur_region);
this_region->u.must_not_throw.failure_decl
- = gimple_eh_must_not_throw_fndecl (inner);
+ = gimple_eh_must_not_throw_fndecl (
+ as_a <geh_mnt *> (inner));
this_region->u.must_not_throw.failure_loc
= LOCATION_LOCUS (gimple_location (tp));
except that we only execute the cleanup block for exception edges. */
static gimple_seq
-lower_cleanup (struct leh_state *state, gimple tp)
+lower_cleanup (struct leh_state *state, gtry *tp)
{
struct leh_state this_state = *state;
eh_region this_region = NULL;
break;
case GIMPLE_SWITCH:
- verify_norecord_switch_expr (state, stmt);
+ verify_norecord_switch_expr (state, as_a <gswitch *> (stmt));
break;
case GIMPLE_TRY:
- if (gimple_try_kind (stmt) == GIMPLE_TRY_FINALLY)
- replace = lower_try_finally (state, stmt);
- else
- {
- x = gimple_seq_first_stmt (gimple_try_cleanup (stmt));
- if (!x)
- {
- replace = gimple_try_eval (stmt);
- lower_eh_constructs_1 (state, &replace);
- }
- else
- switch (gimple_code (x))
+ {
+ gtry *try_stmt = as_a <gtry *> (stmt);
+ if (gimple_try_kind (try_stmt) == GIMPLE_TRY_FINALLY)
+ replace = lower_try_finally (state, try_stmt);
+ else
+ {
+ x = gimple_seq_first_stmt (gimple_try_cleanup (try_stmt));
+ if (!x)
{
+ replace = gimple_try_eval (try_stmt);
+ lower_eh_constructs_1 (state, &replace);
+ }
+ else
+ switch (gimple_code (x))
+ {
case GIMPLE_CATCH:
- replace = lower_catch (state, stmt);
- break;
+ replace = lower_catch (state, try_stmt);
+ break;
case GIMPLE_EH_FILTER:
- replace = lower_eh_filter (state, stmt);
- break;
+ replace = lower_eh_filter (state, try_stmt);
+ break;
case GIMPLE_EH_MUST_NOT_THROW:
- replace = lower_eh_must_not_throw (state, stmt);
- break;
+ replace = lower_eh_must_not_throw (state, try_stmt);
+ break;
case GIMPLE_EH_ELSE:
- /* This code is only valid with GIMPLE_TRY_FINALLY. */
- gcc_unreachable ();
+ /* This code is only valid with GIMPLE_TRY_FINALLY. */
+ gcc_unreachable ();
default:
- replace = lower_cleanup (state, stmt);
- break;
- }
- }
+ replace = lower_cleanup (state, try_stmt);
+ break;
+ }
+ }
+ }
/* Remove the old stmt and insert the transformed sequence
instead. */
no fallthru edge; false if there is. */
bool
-make_eh_dispatch_edges (gimple stmt)
+make_eh_dispatch_edges (geh_dispatch *stmt)
{
eh_region r;
eh_catch c;
The actual edge update will happen in the caller. */
void
-redirect_eh_dispatch_edge (gimple stmt, edge e, basic_block new_bb)
+redirect_eh_dispatch_edge (geh_dispatch *stmt, edge e, basic_block new_bb)
{
tree new_lab = gimple_block_label (new_bb);
bool any_changed = false;
return true;
case GIMPLE_CALL:
- return !gimple_call_nothrow_p (stmt);
+ return !gimple_call_nothrow_p (as_a <gcall *> (stmt));
case GIMPLE_ASSIGN:
case GIMPLE_COND:
case GIMPLE_ASM:
if (!cfun->can_throw_non_call_exceptions)
return false;
- return gimple_asm_volatile_p (stmt);
+ return gimple_asm_volatile_p (as_a <gasm *> (stmt));
default:
return false;
temporary used in the initializer for A. */
static void
-optimize_double_finally (gimple one, gimple two)
+optimize_double_finally (gtry *one, gtry *two)
{
gimple oneh;
gimple_stmt_iterator gsi;
two = NULL;
else
two = gsi_stmt (gsi);
- if (one
- && two
- && gimple_code (one) == GIMPLE_TRY
- && gimple_code (two) == GIMPLE_TRY
- && gimple_try_kind (one) == GIMPLE_TRY_FINALLY
- && gimple_try_kind (two) == GIMPLE_TRY_FINALLY)
- optimize_double_finally (one, two);
+ if (one && two)
+ if (gtry *try_one = dyn_cast <gtry *> (one))
+ if (gtry *try_two = dyn_cast <gtry *> (two))
+ if (gimple_try_kind (try_one) == GIMPLE_TRY_FINALLY
+ && gimple_try_kind (try_two) == GIMPLE_TRY_FINALLY)
+ optimize_double_finally (try_one, try_two);
if (one)
switch (gimple_code (one))
{
refactor_eh_r (gimple_try_cleanup (one));
break;
case GIMPLE_CATCH:
- refactor_eh_r (gimple_catch_handler (one));
+ refactor_eh_r (gimple_catch_handler (as_a <gcatch *> (one)));
break;
case GIMPLE_EH_FILTER:
refactor_eh_r (gimple_eh_filter_failure (one));
break;
case GIMPLE_EH_ELSE:
- refactor_eh_r (gimple_eh_else_n_body (one));
- refactor_eh_r (gimple_eh_else_e_body (one));
+ {
+ geh_else *eh_else_stmt = as_a <geh_else *> (one);
+ refactor_eh_r (gimple_eh_else_n_body (eh_else_stmt));
+ refactor_eh_r (gimple_eh_else_e_body (eh_else_stmt));
+ }
break;
default:
break;
/* At the end of gimple optimization, we can lower RESX. */
static bool
-lower_resx (basic_block bb, gimple stmt, hash_map<eh_region, tree> *mnt_map)
+lower_resx (basic_block bb, gresx *stmt,
+ hash_map<eh_region, tree> *mnt_map)
{
int lp_nr;
eh_region src_r, dst_r;
gimple last = last_stmt (bb);
if (last && is_gimple_resx (last))
{
- dominance_invalidated |= lower_resx (bb, last, &mnt_map);
+ dominance_invalidated |=
+ lower_resx (bb, as_a <gresx *> (last), &mnt_map);
any_rewritten = true;
}
}
/* See if there is a virtual PHI node to take an updated virtual
operand from. */
- gimple vphi = NULL;
+ gphi *vphi = NULL;
tree vuse = NULL_TREE;
- for (gsi = gsi_start_phis (succbb); !gsi_end_p (gsi); gsi_next (&gsi))
+ for (gphi_iterator gpi = gsi_start_phis (succbb);
+ !gsi_end_p (gpi); gsi_next (&gpi))
{
- tree res = gimple_phi_result (gsi_stmt (gsi));
+ tree res = gimple_phi_result (gpi.phi ());
if (virtual_operand_p (res))
{
- vphi = gsi_stmt (gsi);
+ vphi = gpi.phi ();
vuse = res;
break;
}
we have found some duplicate labels and removed some edges. */
static bool
-lower_eh_dispatch (basic_block src, gimple stmt)
+lower_eh_dispatch (basic_block src, geh_dispatch *stmt)
{
gimple_stmt_iterator gsi;
int region_nr;
continue;
if (gimple_code (last) == GIMPLE_EH_DISPATCH)
{
- redirected |= lower_eh_dispatch (bb, last);
+ redirected |= lower_eh_dispatch (bb,
+ as_a <geh_dispatch *> (last));
flags |= TODO_update_ssa_only_virtuals;
}
else if (gimple_code (last) == GIMPLE_RESX)
switch (gimple_code (stmt))
{
case GIMPLE_RESX:
- bitmap_set_bit (r_reachable, gimple_resx_region (stmt));
+ bitmap_set_bit (r_reachable,
+ gimple_resx_region (as_a <gresx *> (stmt)));
break;
case GIMPLE_EH_DISPATCH:
- bitmap_set_bit (r_reachable, gimple_eh_dispatch_region (stmt));
+ bitmap_set_bit (r_reachable,
+ gimple_eh_dispatch_region (
+ as_a <geh_dispatch *> (stmt)));
break;
default:
break;
for a different region. */
for (gsi = gsi_start_bb (e_out->dest); !gsi_end_p (gsi); gsi_next (&gsi))
{
- gimple stmt = gsi_stmt (gsi);
+ glabel *label_stmt = dyn_cast <glabel *> (gsi_stmt (gsi));
tree lab;
int lp_nr;
- if (gimple_code (stmt) != GIMPLE_LABEL)
+ if (!label_stmt)
break;
- lab = gimple_label_label (stmt);
+ lab = gimple_label_label (label_stmt);
lp_nr = EH_LANDING_PAD_NR (lab);
if (lp_nr && get_eh_region_from_lp_number (lp_nr) != lp->region)
return false;
that doesn't appear to handle virtuals. Propagate by hand. */
if (!gimple_seq_empty_p (phi_nodes (bb)))
{
- for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); )
+ for (gphi_iterator gpi = gsi_start_phis (bb); !gsi_end_p (gpi); )
{
- gimple use_stmt, phi = gsi_stmt (gsi);
+ gimple use_stmt;
+ gphi *phi = gpi.phi ();
tree lhs = gimple_phi_result (phi);
tree rhs = gimple_phi_arg_def (phi, 0);
use_operand_p use_p;
if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (lhs))
SSA_NAME_OCCURS_IN_ABNORMAL_PHI (rhs) = 1;
- remove_phi_node (&gsi, true);
+ remove_phi_node (&gpi, true);
}
}
cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb,
edge old_bb_out, bool change_region)
{
- gimple_stmt_iterator ngsi, ogsi;
+ gphi_iterator ngsi, ogsi;
edge_iterator ei;
edge e;
bitmap ophi_handled;
for the edges we're going to move. */
for (ngsi = gsi_start_phis (new_bb); !gsi_end_p (ngsi); gsi_next (&ngsi))
{
- gimple ophi, nphi = gsi_stmt (ngsi);
+ gphi *ophi, *nphi = ngsi.phi ();
tree nresult, nop;
nresult = gimple_phi_result (nphi);
ophi = NULL;
for (ogsi = gsi_start_phis (old_bb); !gsi_end_p (ogsi); gsi_next (&ogsi))
{
- ophi = gsi_stmt (ogsi);
+ ophi = ogsi.phi ();
if (gimple_phi_result (ophi) == nop)
break;
ophi = NULL;
we don't know what values from the other edges into NEW_BB to use. */
for (ogsi = gsi_start_phis (old_bb); !gsi_end_p (ogsi); gsi_next (&ogsi))
{
- gimple ophi = gsi_stmt (ogsi);
+ gphi *ophi = ogsi.phi ();
tree oresult = gimple_phi_result (ophi);
if (!bitmap_bit_p (ophi_handled, SSA_NAME_VERSION (oresult)))
goto fail;
lab = NULL;
for (gsi = gsi_start_bb (e_out->dest); !gsi_end_p (gsi); gsi_next (&gsi))
{
- gimple stmt = gsi_stmt (gsi);
+ glabel *stmt = dyn_cast <glabel *> (gsi_stmt (gsi));
int lp_nr;
- if (gimple_code (stmt) != GIMPLE_LABEL)
+ if (!stmt)
break;
lab = gimple_label_label (stmt);
lp_nr = EH_LANDING_PAD_NR (lab);
/* Similarly, but handle GIMPLE_EH_DISPATCH specifically. */
DEBUG_FUNCTION bool
-verify_eh_dispatch_edge (gimple stmt)
+verify_eh_dispatch_edge (geh_dispatch *stmt)
{
eh_region r;
eh_catch c;
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